From b91c9a97c9333c87fe2a0c94b3b22b24df1c5fc2 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Fri, 20 Aug 2010 23:46:06 +0900 Subject: nilfs2: allow nilfs_destroy_inode to destroy metadata file inodes The current nilfs_destroy_inode() doesn't handle metadata file inodes including gc inodes (dummy inodes used for garbage collection). This allows nilfs_destroy_inode() to destroy inodes of metadata files. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index d01aff4957d..ee943a342e1 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -577,7 +577,5 @@ void nilfs_mdt_destroy(struct inode *inode) nilfs_palloc_destroy_cache(inode); nilfs_mdt_clear(inode); - kfree(mdi->mi_bgl); /* kfree(NULL) is safe */ - kfree(mdi); nilfs_destroy_inode(inode); } -- cgit v1.2.3 From 5e19a995f4ad8a8f20749a396bb01ebb6d4df96c Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sat, 21 Aug 2010 22:01:51 +0900 Subject: nilfs2: separate initializer of metadata file inode This separates a part of initialization code of metadata file inode, and makes it available from the nilfs iget function that a later patch will add to. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/gcinode.c | 6 +++++- fs/nilfs2/mdt.c | 44 +++++++++++++++++++++++++++----------------- fs/nilfs2/mdt.h | 4 +++- 3 files changed, 35 insertions(+), 19 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c index bed3a783129..cd19a3709bd 100644 --- a/fs/nilfs2/gcinode.c +++ b/fs/nilfs2/gcinode.c @@ -225,10 +225,14 @@ static struct inode *alloc_gcinode(struct the_nilfs *nilfs, ino_t ino, struct inode *inode; struct nilfs_inode_info *ii; - inode = nilfs_mdt_new_common(nilfs, NULL, ino, GFP_NOFS, 0); + inode = nilfs_mdt_new_common(nilfs, NULL, ino); if (!inode) return NULL; + if (nilfs_mdt_init(inode, nilfs, GFP_NOFS, 0) < 0) { + nilfs_destroy_inode(inode); + return NULL; + } inode->i_op = NULL; inode->i_fop = NULL; inode->i_mapping->a_ops = &def_gcinode_aops; diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index ee943a342e1..73e5da3b097 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -439,6 +439,27 @@ static const struct address_space_operations def_mdt_aops = { static const struct inode_operations def_mdt_iops; static const struct file_operations def_mdt_fops; + +int nilfs_mdt_init(struct inode *inode, struct the_nilfs *nilfs, + gfp_t gfp_mask, size_t objsz) +{ + struct nilfs_mdt_info *mi; + + mi = kzalloc(max(sizeof(*mi), objsz), GFP_NOFS); + if (!mi) + return -ENOMEM; + + mi->mi_nilfs = nilfs; + init_rwsem(&mi->mi_sem); + inode->i_private = mi; + + inode->i_mode = S_IFREG; + mapping_set_gfp_mask(inode->i_mapping, gfp_mask); + inode->i_mapping->backing_dev_info = nilfs->ns_bdi; + + return 0; +} + /* * NILFS2 uses pseudo inodes for meta data files such as DAT, cpfile, sufile, * ifile, or gcinodes. This allows the B-tree code and segment constructor @@ -454,12 +475,10 @@ static const struct file_operations def_mdt_fops; * @nilfs: nilfs object * @sb: super block instance the metadata file belongs to * @ino: inode number - * @gfp_mask: gfp mask for data pages - * @objsz: size of the private object attached to inode->i_private */ struct inode * nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb, - ino_t ino, gfp_t gfp_mask, size_t objsz) + ino_t ino) { struct inode *inode = nilfs_alloc_inode_common(nilfs); @@ -467,15 +486,6 @@ nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb, return NULL; else { struct address_space * const mapping = &inode->i_data; - struct nilfs_mdt_info *mi; - - mi = kzalloc(max(sizeof(*mi), objsz), GFP_NOFS); - if (!mi) { - nilfs_destroy_inode(inode); - return NULL; - } - mi->mi_nilfs = nilfs; - init_rwsem(&mi->mi_sem); inode->i_sb = sb; /* sb may be NULL for some meta data files */ inode->i_blkbits = nilfs->ns_blocksize_bits; @@ -483,8 +493,6 @@ nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb, atomic_set(&inode->i_count, 1); inode->i_nlink = 1; inode->i_ino = ino; - inode->i_mode = S_IFREG; - inode->i_private = mi; #ifdef INIT_UNUSED_INODE_FIELDS atomic_set(&inode->i_writecount, 0); @@ -515,9 +523,7 @@ nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb, mapping->host = NULL; /* instead of inode */ mapping->flags = 0; - mapping_set_gfp_mask(mapping, gfp_mask); mapping->assoc_mapping = NULL; - mapping->backing_dev_info = nilfs->ns_bdi; inode->i_mapping = mapping; } @@ -530,10 +536,14 @@ struct inode *nilfs_mdt_new(struct the_nilfs *nilfs, struct super_block *sb, { struct inode *inode; - inode = nilfs_mdt_new_common(nilfs, sb, ino, NILFS_MDT_GFP, objsz); + inode = nilfs_mdt_new_common(nilfs, sb, ino); if (!inode) return NULL; + if (nilfs_mdt_init(inode, nilfs, NILFS_MDT_GFP, objsz) < 0) { + nilfs_destroy_inode(inode); + return NULL; + } inode->i_op = &def_mdt_iops; inode->i_fop = &def_mdt_fops; inode->i_mapping->a_ops = &def_mdt_aops; diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index 6c4bbb0470f..f44560224bd 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -76,10 +76,12 @@ int nilfs_mdt_forget_block(struct inode *, unsigned long); int nilfs_mdt_mark_block_dirty(struct inode *, unsigned long); int nilfs_mdt_fetch_dirty(struct inode *); +int nilfs_mdt_init(struct inode *inode, struct the_nilfs *nilfs, + gfp_t gfp_mask, size_t objsz); struct inode *nilfs_mdt_new(struct the_nilfs *, struct super_block *, ino_t, size_t); struct inode *nilfs_mdt_new_common(struct the_nilfs *, struct super_block *, - ino_t, gfp_t, size_t); + ino_t); void nilfs_mdt_destroy(struct inode *); void nilfs_mdt_set_entry_size(struct inode *, unsigned, unsigned); void nilfs_mdt_set_shadow(struct inode *, struct inode *); -- cgit v1.2.3 From ebdfed4dc59d177cf26013a0c9b8ee9652e9a140 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Mon, 6 Sep 2010 12:05:43 +0900 Subject: nilfs2: add routines to roll back state of DAT file This adds optional function to metadata files which makes a copy of bmap, page caches, and b-tree node cache, and rolls back to the copy as needed. This enhancement is intended to displace gcdat inode that provides a similar function in a different way. In this patch, nilfs_shadow_map structure is added to store a copy of the foregoing states. nilfs_mdt_setup_shadow_map relates this structure to a metadata file. And, nilfs_mdt_save_to_shadow_map() and nilfs_mdt_restore_from_shadow_map() provides save and restore functions respectively. Finally, nilfs_mdt_clear_shadow_map() clears states of nilfs_shadow_map. The copy of b-tree node cache and page cache is made by duplicating only dirty pages into corresponding caches in nilfs_shadow_map. Their restoration is done by clearing dirty pages from original caches and by copying dirty pages back from nilfs_shadow_map. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/btnode.c | 17 ++------- fs/nilfs2/mdt.c | 104 ++++++++++++++++++++++++++++++++++++++++++++++++++--- fs/nilfs2/mdt.h | 14 ++++++++ fs/nilfs2/page.c | 25 +++++++++++++ fs/nilfs2/page.h | 4 +++ 5 files changed, 145 insertions(+), 19 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c index f78ab1044d1..5115814cb74 100644 --- a/fs/nilfs2/btnode.c +++ b/fs/nilfs2/btnode.c @@ -37,15 +37,7 @@ void nilfs_btnode_cache_init_once(struct address_space *btnc) { - memset(btnc, 0, sizeof(*btnc)); - INIT_RADIX_TREE(&btnc->page_tree, GFP_ATOMIC); - spin_lock_init(&btnc->tree_lock); - INIT_LIST_HEAD(&btnc->private_list); - spin_lock_init(&btnc->private_lock); - - spin_lock_init(&btnc->i_mmap_lock); - INIT_RAW_PRIO_TREE_ROOT(&btnc->i_mmap); - INIT_LIST_HEAD(&btnc->i_mmap_nonlinear); + nilfs_mapping_init_once(btnc); } static const struct address_space_operations def_btnode_aops = { @@ -55,12 +47,7 @@ static const struct address_space_operations def_btnode_aops = { void nilfs_btnode_cache_init(struct address_space *btnc, struct backing_dev_info *bdi) { - btnc->host = NULL; /* can safely set to host inode ? */ - btnc->flags = 0; - mapping_set_gfp_mask(btnc, GFP_NOFS); - btnc->assoc_mapping = NULL; - btnc->backing_dev_info = bdi; - btnc->a_ops = &def_btnode_aops; + nilfs_mapping_init(btnc, bdi, &def_btnode_aops); } void nilfs_btnode_cache_clear(struct address_space *btnc) diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 73e5da3b097..0066468609d 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -398,16 +398,22 @@ int nilfs_mdt_fetch_dirty(struct inode *inode) static int nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) { - struct inode *inode = container_of(page->mapping, - struct inode, i_data); - struct super_block *sb = inode->i_sb; - struct the_nilfs *nilfs = NILFS_MDT(inode)->mi_nilfs; + struct inode *inode; + struct super_block *sb; + struct the_nilfs *nilfs; struct nilfs_sb_info *writer = NULL; int err = 0; redirty_page_for_writepage(wbc, page); unlock_page(page); + inode = page->mapping->host; + if (!inode) + return 0; + + sb = inode->i_sb; + nilfs = NILFS_MDT(inode)->mi_nilfs; + if (page->mapping->assoc_mapping) return 0; /* Do not request flush for shadow page cache */ if (!sb) { @@ -567,6 +573,96 @@ void nilfs_mdt_set_shadow(struct inode *orig, struct inode *shadow) &NILFS_I(orig)->i_btnode_cache; } +static const struct address_space_operations shadow_map_aops = { + .sync_page = block_sync_page, +}; + +/** + * nilfs_mdt_setup_shadow_map - setup shadow map and bind it to metadata file + * @inode: inode of the metadata file + * @shadow: shadow mapping + */ +int nilfs_mdt_setup_shadow_map(struct inode *inode, + struct nilfs_shadow_map *shadow) +{ + struct nilfs_mdt_info *mi = NILFS_MDT(inode); + struct backing_dev_info *bdi = NILFS_I_NILFS(inode)->ns_bdi; + + INIT_LIST_HEAD(&shadow->frozen_buffers); + nilfs_mapping_init_once(&shadow->frozen_data); + nilfs_mapping_init(&shadow->frozen_data, bdi, &shadow_map_aops); + nilfs_mapping_init_once(&shadow->frozen_btnodes); + nilfs_mapping_init(&shadow->frozen_btnodes, bdi, &shadow_map_aops); + mi->mi_shadow = shadow; + return 0; +} + +/** + * nilfs_mdt_save_to_shadow_map - copy bmap and dirty pages to shadow map + * @inode: inode of the metadata file + */ +int nilfs_mdt_save_to_shadow_map(struct inode *inode) +{ + struct nilfs_mdt_info *mi = NILFS_MDT(inode); + struct nilfs_inode_info *ii = NILFS_I(inode); + struct nilfs_shadow_map *shadow = mi->mi_shadow; + int ret; + + ret = nilfs_copy_dirty_pages(&shadow->frozen_data, inode->i_mapping); + if (ret) + goto out; + + ret = nilfs_copy_dirty_pages(&shadow->frozen_btnodes, + &ii->i_btnode_cache); + if (ret) + goto out; + + nilfs_bmap_save(ii->i_bmap, &shadow->bmap_store); + out: + return ret; +} + +/** + * nilfs_mdt_restore_from_shadow_map - restore dirty pages and bmap state + * @inode: inode of the metadata file + */ +void nilfs_mdt_restore_from_shadow_map(struct inode *inode) +{ + struct nilfs_mdt_info *mi = NILFS_MDT(inode); + struct nilfs_inode_info *ii = NILFS_I(inode); + struct nilfs_shadow_map *shadow = mi->mi_shadow; + + down_write(&mi->mi_sem); + + if (mi->mi_palloc_cache) + nilfs_palloc_clear_cache(inode); + + nilfs_clear_dirty_pages(inode->i_mapping); + nilfs_copy_back_pages(inode->i_mapping, &shadow->frozen_data); + + nilfs_clear_dirty_pages(&ii->i_btnode_cache); + nilfs_copy_back_pages(&ii->i_btnode_cache, &shadow->frozen_btnodes); + + nilfs_bmap_restore(ii->i_bmap, &shadow->bmap_store); + + up_write(&mi->mi_sem); +} + +/** + * nilfs_mdt_clear_shadow_map - truncate pages in shadow map caches + * @inode: inode of the metadata file + */ +void nilfs_mdt_clear_shadow_map(struct inode *inode) +{ + struct nilfs_mdt_info *mi = NILFS_MDT(inode); + struct nilfs_shadow_map *shadow = mi->mi_shadow; + + down_write(&mi->mi_sem); + truncate_inode_pages(&shadow->frozen_data, 0); + truncate_inode_pages(&shadow->frozen_btnodes, 0); + up_write(&mi->mi_sem); +} + static void nilfs_mdt_clear(struct inode *inode) { struct nilfs_inode_info *ii = NILFS_I(inode); diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index f44560224bd..e7f0d158c52 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -28,6 +28,13 @@ #include "nilfs.h" #include "page.h" +struct nilfs_shadow_map { + struct nilfs_bmap_store bmap_store; + struct address_space frozen_data; + struct address_space frozen_btnodes; + struct list_head frozen_buffers; +}; + /** * struct nilfs_mdt_info - on-memory private data of meta data files * @mi_nilfs: back pointer to the_nilfs struct @@ -37,6 +44,7 @@ * @mi_first_entry_offset: offset to the first entry * @mi_entries_per_block: number of entries in a block * @mi_palloc_cache: persistent object allocator cache + * @mi_shadow: shadow of bmap and page caches * @mi_blocks_per_group: number of blocks in a group * @mi_blocks_per_desc_block: number of blocks per descriptor block */ @@ -48,6 +56,7 @@ struct nilfs_mdt_info { unsigned mi_first_entry_offset; unsigned long mi_entries_per_block; struct nilfs_palloc_cache *mi_palloc_cache; + struct nilfs_shadow_map *mi_shadow; unsigned long mi_blocks_per_group; unsigned long mi_blocks_per_desc_block; }; @@ -86,6 +95,11 @@ void nilfs_mdt_destroy(struct inode *); void nilfs_mdt_set_entry_size(struct inode *, unsigned, unsigned); void nilfs_mdt_set_shadow(struct inode *, struct inode *); +int nilfs_mdt_setup_shadow_map(struct inode *inode, + struct nilfs_shadow_map *shadow); +int nilfs_mdt_save_to_shadow_map(struct inode *inode); +void nilfs_mdt_restore_from_shadow_map(struct inode *inode); +void nilfs_mdt_clear_shadow_map(struct inode *inode); #define nilfs_mdt_mark_buffer_dirty(bh) nilfs_mark_buffer_dirty(bh) diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index aab11db2cb0..6384ac14c0c 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -513,6 +513,31 @@ unsigned nilfs_page_count_clean_buffers(struct page *page, } return nc; } + +void nilfs_mapping_init_once(struct address_space *mapping) +{ + memset(mapping, 0, sizeof(*mapping)); + INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC); + spin_lock_init(&mapping->tree_lock); + INIT_LIST_HEAD(&mapping->private_list); + spin_lock_init(&mapping->private_lock); + + spin_lock_init(&mapping->i_mmap_lock); + INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap); + INIT_LIST_HEAD(&mapping->i_mmap_nonlinear); +} + +void nilfs_mapping_init(struct address_space *mapping, + struct backing_dev_info *bdi, + const struct address_space_operations *aops) +{ + mapping->host = NULL; + mapping->flags = 0; + mapping_set_gfp_mask(mapping, GFP_NOFS); + mapping->assoc_mapping = NULL; + mapping->backing_dev_info = bdi; + mapping->a_ops = aops; +} /* * NILFS2 needs clear_page_dirty() in the following two cases: diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h index f53d8da41ed..6ec4f498fc2 100644 --- a/fs/nilfs2/page.h +++ b/fs/nilfs2/page.h @@ -59,6 +59,10 @@ void nilfs_free_private_page(struct page *); int nilfs_copy_dirty_pages(struct address_space *, struct address_space *); void nilfs_copy_back_pages(struct address_space *, struct address_space *); void nilfs_clear_dirty_pages(struct address_space *); +void nilfs_mapping_init_once(struct address_space *mapping); +void nilfs_mapping_init(struct address_space *mapping, + struct backing_dev_info *bdi, + const struct address_space_operations *aops); unsigned nilfs_page_count_clean_buffers(struct page *, unsigned, unsigned); #define NILFS_PAGE_BUG(page, m, a...) \ -- cgit v1.2.3 From b1f6a4f294088b3fcf9ae67915ca550a1ded2819 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Tue, 31 Aug 2010 11:40:34 +0900 Subject: nilfs2: add routines to redirect access to buffers of DAT file During garbage collection (GC), DAT file, which converts virtual block number to real block number, may return disk block number that is not yet written to the device. To avoid access to unwritten blocks, the current implementation stores changes to the caches of GCDAT during GC and atomically commit the changes into the DAT file after they are written to the device. This patch, instead, adds a function that makes a copy of specified buffer and stores it in nilfs_shadow_map, and a function to get the backup copy as needed (nilfs_mdt_freeze_buffer and nilfs_mdt_get_frozen_buffer respectively). Before DAT changes block number in an entry block, it makes a copy and redirect access to the buffer so that address conversion function (i.e. nilfs_dat_translate) refers to the old address saved in the copy. This patch gives requisites for such redirection. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++ fs/nilfs2/mdt.h | 3 +++ fs/nilfs2/page.c | 2 ++ fs/nilfs2/page.h | 2 ++ fs/nilfs2/segment.c | 1 + 5 files changed, 75 insertions(+) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 0066468609d..532f85acf27 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -622,6 +622,72 @@ int nilfs_mdt_save_to_shadow_map(struct inode *inode) return ret; } +int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh) +{ + struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow; + struct buffer_head *bh_frozen; + struct page *page; + int blkbits = inode->i_blkbits; + int ret = -ENOMEM; + + page = grab_cache_page(&shadow->frozen_data, bh->b_page->index); + if (!page) + return ret; + + if (!page_has_buffers(page)) + create_empty_buffers(page, 1 << blkbits, 0); + + bh_frozen = nilfs_page_get_nth_block(page, bh_offset(bh) >> blkbits); + if (bh_frozen) { + if (!buffer_uptodate(bh_frozen)) + nilfs_copy_buffer(bh_frozen, bh); + if (list_empty(&bh_frozen->b_assoc_buffers)) { + list_add_tail(&bh_frozen->b_assoc_buffers, + &shadow->frozen_buffers); + set_buffer_nilfs_redirected(bh); + } else { + brelse(bh_frozen); /* already frozen */ + } + ret = 0; + } + unlock_page(page); + page_cache_release(page); + return ret; +} + +struct buffer_head * +nilfs_mdt_get_frozen_buffer(struct inode *inode, struct buffer_head *bh) +{ + struct nilfs_shadow_map *shadow = NILFS_MDT(inode)->mi_shadow; + struct buffer_head *bh_frozen = NULL; + struct page *page; + int n; + + page = find_lock_page(&shadow->frozen_data, bh->b_page->index); + if (page) { + if (page_has_buffers(page)) { + n = bh_offset(bh) >> inode->i_blkbits; + bh_frozen = nilfs_page_get_nth_block(page, n); + } + unlock_page(page); + page_cache_release(page); + } + return bh_frozen; +} + +static void nilfs_release_frozen_buffers(struct nilfs_shadow_map *shadow) +{ + struct list_head *head = &shadow->frozen_buffers; + struct buffer_head *bh; + + while (!list_empty(head)) { + bh = list_first_entry(head, struct buffer_head, + b_assoc_buffers); + list_del_init(&bh->b_assoc_buffers); + brelse(bh); /* drop ref-count to make it releasable */ + } +} + /** * nilfs_mdt_restore_from_shadow_map - restore dirty pages and bmap state * @inode: inode of the metadata file @@ -658,6 +724,7 @@ void nilfs_mdt_clear_shadow_map(struct inode *inode) struct nilfs_shadow_map *shadow = mi->mi_shadow; down_write(&mi->mi_sem); + nilfs_release_frozen_buffers(shadow); truncate_inode_pages(&shadow->frozen_data, 0); truncate_inode_pages(&shadow->frozen_btnodes, 0); up_write(&mi->mi_sem); diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index e7f0d158c52..e60bbfe899f 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -100,6 +100,9 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode, int nilfs_mdt_save_to_shadow_map(struct inode *inode); void nilfs_mdt_restore_from_shadow_map(struct inode *inode); void nilfs_mdt_clear_shadow_map(struct inode *inode); +int nilfs_mdt_freeze_buffer(struct inode *inode, struct buffer_head *bh); +struct buffer_head *nilfs_mdt_get_frozen_buffer(struct inode *inode, + struct buffer_head *bh); #define nilfs_mdt_mark_buffer_dirty(bh) nilfs_mark_buffer_dirty(bh) diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 6384ac14c0c..7083344ac88 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -131,6 +131,7 @@ void nilfs_forget_buffer(struct buffer_head *bh) lock_buffer(bh); clear_buffer_nilfs_volatile(bh); clear_buffer_nilfs_checked(bh); + clear_buffer_nilfs_redirected(bh); clear_buffer_dirty(bh); if (nilfs_page_buffers_clean(page)) __nilfs_clear_page_dirty(page); @@ -483,6 +484,7 @@ void nilfs_clear_dirty_pages(struct address_space *mapping) clear_buffer_dirty(bh); clear_buffer_nilfs_volatile(bh); clear_buffer_nilfs_checked(bh); + clear_buffer_nilfs_redirected(bh); clear_buffer_uptodate(bh); clear_buffer_mapped(bh); unlock_buffer(bh); diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h index 6ec4f498fc2..fb9e8a8a203 100644 --- a/fs/nilfs2/page.h +++ b/fs/nilfs2/page.h @@ -35,12 +35,14 @@ enum { BH_NILFS_Node, BH_NILFS_Volatile, BH_NILFS_Checked, + BH_NILFS_Redirected, }; BUFFER_FNS(NILFS_Allocated, nilfs_allocated) /* nilfs private buffers */ BUFFER_FNS(NILFS_Node, nilfs_node) /* nilfs node buffers */ BUFFER_FNS(NILFS_Volatile, nilfs_volatile) BUFFER_FNS(NILFS_Checked, nilfs_checked) /* buffer is verified */ +BUFFER_FNS(NILFS_Redirected, nilfs_redirected) /* redirected to a copy */ void nilfs_mark_buffer_dirty(struct buffer_head *bh); diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index b75306d642c..91dc0668ec8 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1908,6 +1908,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) set_buffer_uptodate(bh); clear_buffer_dirty(bh); clear_buffer_nilfs_volatile(bh); + clear_buffer_nilfs_redirected(bh); if (bh == segbuf->sb_super_root) { if (bh->b_page != bd_page) { end_page_writeback(bd_page); -- cgit v1.2.3 From c1c1d7092072093ad960db2f6c08f06705c57fa4 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 29 Aug 2010 12:44:56 +0900 Subject: nilfs2: get rid of GCDAT inode This applies prepared rollback function and redirect function of metadata file to DAT file, and eliminates GCDAT inode. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/Makefile | 2 +- fs/nilfs2/bmap.c | 16 ---------- fs/nilfs2/bmap.h | 2 -- fs/nilfs2/dat.c | 30 +++++++++++++++++- fs/nilfs2/gcdat.c | 87 --------------------------------------------------- fs/nilfs2/mdt.c | 9 ------ fs/nilfs2/mdt.h | 1 - fs/nilfs2/nilfs.h | 8 +---- fs/nilfs2/page.c | 28 ++--------------- fs/nilfs2/segment.c | 14 ++++----- fs/nilfs2/the_nilfs.c | 13 +------- fs/nilfs2/the_nilfs.h | 2 -- 12 files changed, 41 insertions(+), 171 deletions(-) delete mode 100644 fs/nilfs2/gcdat.c (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/Makefile b/fs/nilfs2/Makefile index df3e62c1ddc..85c98737a14 100644 --- a/fs/nilfs2/Makefile +++ b/fs/nilfs2/Makefile @@ -2,4 +2,4 @@ obj-$(CONFIG_NILFS2_FS) += nilfs2.o nilfs2-y := inode.o file.o dir.o super.o namei.o page.o mdt.o \ btnode.o bmap.o btree.o direct.o dat.o recovery.o \ the_nilfs.o segbuf.o segment.o cpfile.o sufile.o \ - ifile.o alloc.o gcinode.o ioctl.o gcdat.o + ifile.o alloc.o gcinode.o ioctl.o diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c index 00244402d59..8b782b062ba 100644 --- a/fs/nilfs2/bmap.c +++ b/fs/nilfs2/bmap.c @@ -533,22 +533,6 @@ void nilfs_bmap_init_gc(struct nilfs_bmap *bmap) nilfs_btree_init_gc(bmap); } -void nilfs_bmap_init_gcdat(struct nilfs_bmap *gcbmap, struct nilfs_bmap *bmap) -{ - memcpy(gcbmap, bmap, sizeof(*bmap)); - init_rwsem(&gcbmap->b_sem); - lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key); - gcbmap->b_inode = &NILFS_BMAP_I(gcbmap)->vfs_inode; -} - -void nilfs_bmap_commit_gcdat(struct nilfs_bmap *gcbmap, struct nilfs_bmap *bmap) -{ - memcpy(bmap, gcbmap, sizeof(*bmap)); - init_rwsem(&bmap->b_sem); - lockdep_set_class(&bmap->b_sem, &nilfs_bmap_dat_lock_key); - bmap->b_inode = &NILFS_BMAP_I(bmap)->vfs_inode; -} - void nilfs_bmap_save(const struct nilfs_bmap *bmap, struct nilfs_bmap_store *store) { diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h index 5f3339e3eac..bde1c0aa2e1 100644 --- a/fs/nilfs2/bmap.h +++ b/fs/nilfs2/bmap.h @@ -159,8 +159,6 @@ int nilfs_bmap_lookup_at_level(struct nilfs_bmap *, __u64, int, __u64 *); int nilfs_bmap_mark(struct nilfs_bmap *, __u64, int); void nilfs_bmap_init_gc(struct nilfs_bmap *); -void nilfs_bmap_init_gcdat(struct nilfs_bmap *, struct nilfs_bmap *); -void nilfs_bmap_commit_gcdat(struct nilfs_bmap *, struct nilfs_bmap *); void nilfs_bmap_save(const struct nilfs_bmap *, struct nilfs_bmap_store *); void nilfs_bmap_restore(struct nilfs_bmap *, const struct nilfs_bmap_store *); diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c index 01314675568..7091c4e0f04 100644 --- a/fs/nilfs2/dat.c +++ b/fs/nilfs2/dat.c @@ -36,6 +36,7 @@ struct nilfs_dat_info { struct nilfs_mdt_info mi; struct nilfs_palloc_cache palloc_cache; + struct nilfs_shadow_map shadow; }; static inline struct nilfs_dat_info *NILFS_DAT_I(struct inode *dat) @@ -327,6 +328,23 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr) ret = nilfs_palloc_get_entry_block(dat, vblocknr, 0, &entry_bh); if (ret < 0) return ret; + + /* + * The given disk block number (blocknr) is not yet written to + * the device at this point. + * + * To prevent nilfs_dat_translate() from returning the + * uncommited block number, this makes a copy of the entry + * buffer and redirects nilfs_dat_translate() to the copy. + */ + if (!buffer_nilfs_redirected(entry_bh)) { + ret = nilfs_mdt_freeze_buffer(dat, entry_bh); + if (ret) { + brelse(entry_bh); + return ret; + } + } + kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); if (unlikely(entry->de_blocknr == cpu_to_le64(0))) { @@ -371,7 +389,7 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr) */ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp) { - struct buffer_head *entry_bh; + struct buffer_head *entry_bh, *bh; struct nilfs_dat_entry *entry; sector_t blocknr; void *kaddr; @@ -381,6 +399,15 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp) if (ret < 0) return ret; + if (!nilfs_doing_gc() && buffer_nilfs_redirected(entry_bh)) { + bh = nilfs_mdt_get_frozen_buffer(dat, entry_bh); + if (bh) { + WARN_ON(!buffer_uptodate(bh)); + brelse(entry_bh); + entry_bh = bh; + } + } + kaddr = kmap_atomic(entry_bh->b_page, KM_USER0); entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr); blocknr = le64_to_cpu(entry->de_blocknr); @@ -468,6 +495,7 @@ struct inode *nilfs_dat_new(struct the_nilfs *nilfs, size_t entry_size) di = NILFS_DAT_I(dat); lockdep_set_class(&di->mi.mi_sem, &dat_lock_key); nilfs_palloc_setup_cache(dat, &di->palloc_cache); + nilfs_mdt_setup_shadow_map(dat, &di->shadow); } return dat; } diff --git a/fs/nilfs2/gcdat.c b/fs/nilfs2/gcdat.c deleted file mode 100644 index 84a45d1d546..00000000000 --- a/fs/nilfs2/gcdat.c +++ /dev/null @@ -1,87 +0,0 @@ -/* - * gcdat.c - NILFS shadow DAT inode for GC - * - * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Written by Seiji Kihara , Amagai Yoshiji , - * and Ryusuke Konishi . - * - */ - -#include -#include "nilfs.h" -#include "page.h" -#include "mdt.h" - -int nilfs_init_gcdat_inode(struct the_nilfs *nilfs) -{ - struct inode *dat = nilfs->ns_dat, *gcdat = nilfs->ns_gc_dat; - struct nilfs_inode_info *dii = NILFS_I(dat), *gii = NILFS_I(gcdat); - int err; - - gcdat->i_state = 0; - gcdat->i_blocks = dat->i_blocks; - gii->i_flags = dii->i_flags; - gii->i_state = dii->i_state | (1 << NILFS_I_GCDAT); - gii->i_cno = 0; - nilfs_bmap_init_gcdat(gii->i_bmap, dii->i_bmap); - err = nilfs_copy_dirty_pages(gcdat->i_mapping, dat->i_mapping); - if (unlikely(err)) - return err; - - return nilfs_copy_dirty_pages(&gii->i_btnode_cache, - &dii->i_btnode_cache); -} - -void nilfs_commit_gcdat_inode(struct the_nilfs *nilfs) -{ - struct inode *dat = nilfs->ns_dat, *gcdat = nilfs->ns_gc_dat; - struct nilfs_inode_info *dii = NILFS_I(dat), *gii = NILFS_I(gcdat); - struct address_space *mapping = dat->i_mapping; - struct address_space *gmapping = gcdat->i_mapping; - - down_write(&NILFS_MDT(dat)->mi_sem); - dat->i_blocks = gcdat->i_blocks; - dii->i_flags = gii->i_flags; - dii->i_state = gii->i_state & ~(1 << NILFS_I_GCDAT); - - nilfs_bmap_commit_gcdat(gii->i_bmap, dii->i_bmap); - - nilfs_palloc_clear_cache(dat); - nilfs_palloc_clear_cache(gcdat); - nilfs_clear_dirty_pages(mapping); - nilfs_copy_back_pages(mapping, gmapping); - /* note: mdt dirty flags should be cleared by segctor. */ - - nilfs_clear_dirty_pages(&dii->i_btnode_cache); - nilfs_copy_back_pages(&dii->i_btnode_cache, &gii->i_btnode_cache); - - up_write(&NILFS_MDT(dat)->mi_sem); -} - -void nilfs_clear_gcdat_inode(struct the_nilfs *nilfs) -{ - struct inode *gcdat = nilfs->ns_gc_dat; - struct nilfs_inode_info *gii = NILFS_I(gcdat); - - gcdat->i_state = I_FREEING | I_CLEAR; - gii->i_flags = 0; - - nilfs_palloc_clear_cache(gcdat); - truncate_inode_pages(gcdat->i_mapping, 0); - truncate_inode_pages(&gii->i_btnode_cache, 0); -} diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 532f85acf27..3bbd340a513 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -414,8 +414,6 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) sb = inode->i_sb; nilfs = NILFS_MDT(inode)->mi_nilfs; - if (page->mapping->assoc_mapping) - return 0; /* Do not request flush for shadow page cache */ if (!sb) { down_read(&nilfs->ns_writer_sem); writer = nilfs->ns_writer; @@ -566,13 +564,6 @@ void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size, mi->mi_first_entry_offset = DIV_ROUND_UP(header_size, entry_size); } -void nilfs_mdt_set_shadow(struct inode *orig, struct inode *shadow) -{ - shadow->i_mapping->assoc_mapping = orig->i_mapping; - NILFS_I(shadow)->i_btnode_cache.assoc_mapping = - &NILFS_I(orig)->i_btnode_cache; -} - static const struct address_space_operations shadow_map_aops = { .sync_page = block_sync_page, }; diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index e60bbfe899f..1e0901c3fd6 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -93,7 +93,6 @@ struct inode *nilfs_mdt_new_common(struct the_nilfs *, struct super_block *, ino_t); void nilfs_mdt_destroy(struct inode *); void nilfs_mdt_set_entry_size(struct inode *, unsigned, unsigned); -void nilfs_mdt_set_shadow(struct inode *, struct inode *); int nilfs_mdt_setup_shadow_map(struct inode *inode, struct nilfs_shadow_map *shadow); diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index cf5507a2a17..e9f457951e3 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -101,7 +101,6 @@ enum { NILFS_I_INODE_DIRTY, /* write_inode is requested */ NILFS_I_BMAP, /* has bmap and btnode_cache */ NILFS_I_GCINODE, /* inode for GC, on memory only */ - NILFS_I_GCDAT, /* shadow DAT, on memory only */ }; /* @@ -193,7 +192,7 @@ static inline int nilfs_doing_construction(void) static inline struct inode *nilfs_dat_inode(const struct the_nilfs *nilfs) { - return nilfs_doing_gc() ? nilfs->ns_gc_dat : nilfs->ns_dat; + return nilfs->ns_dat; } /* @@ -294,11 +293,6 @@ int nilfs_gccache_wait_and_mark_dirty(struct buffer_head *); int nilfs_init_gcinode(struct inode *inode); void nilfs_remove_all_gcinodes(struct the_nilfs *nilfs); -/* gcdat.c */ -int nilfs_init_gcdat_inode(struct the_nilfs *); -void nilfs_commit_gcdat_inode(struct the_nilfs *); -void nilfs_clear_gcdat_inode(struct the_nilfs *); - /* * Inodes and files operations */ diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 7083344ac88..a6c3c2e817f 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -79,8 +79,8 @@ struct buffer_head *nilfs_grab_buffer(struct inode *inode, { int blkbits = inode->i_blkbits; pgoff_t index = blkoff >> (PAGE_CACHE_SHIFT - blkbits); - struct page *page, *opage; - struct buffer_head *bh, *obh; + struct page *page; + struct buffer_head *bh; page = grab_cache_page(mapping, index); if (unlikely(!page)) @@ -92,30 +92,6 @@ struct buffer_head *nilfs_grab_buffer(struct inode *inode, page_cache_release(page); return NULL; } - if (!buffer_uptodate(bh) && mapping->assoc_mapping != NULL) { - /* - * Shadow page cache uses assoc_mapping to point its original - * page cache. The following code tries the original cache - * if the given cache is a shadow and it didn't hit. - */ - opage = find_lock_page(mapping->assoc_mapping, index); - if (!opage) - return bh; - - obh = __nilfs_get_page_block(opage, blkoff, index, blkbits, - b_state); - if (buffer_uptodate(obh)) { - nilfs_copy_buffer(bh, obh); - if (buffer_dirty(obh)) { - nilfs_mark_buffer_dirty(bh); - if (!buffer_nilfs_node(bh) && NILFS_MDT(inode)) - nilfs_mdt_mark_dirty(inode); - } - } - brelse(obh); - unlock_page(opage); - page_cache_release(opage); - } return bh; } diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 91dc0668ec8..b0c5e08d06c 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -1945,11 +1945,9 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) nilfs_drop_collected_inodes(&sci->sc_dirty_files); - if (nilfs_doing_gc()) { + if (nilfs_doing_gc()) nilfs_drop_collected_inodes(&sci->sc_gc_inodes); - if (update_sr) - nilfs_commit_gcdat_inode(nilfs); - } else + else nilfs->ns_nongc_ctime = sci->sc_seg_ctime; sci->sc_nblk_inc += sci->sc_nblk_this_inc; @@ -2472,13 +2470,15 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, nilfs_transaction_lock(sbi, &ti, 1); - err = nilfs_init_gcdat_inode(nilfs); + err = nilfs_mdt_save_to_shadow_map(nilfs->ns_dat); if (unlikely(err)) goto out_unlock; err = nilfs_ioctl_prepare_clean_segments(nilfs, argv, kbufs); - if (unlikely(err)) + if (unlikely(err)) { + nilfs_mdt_restore_from_shadow_map(nilfs->ns_dat); goto out_unlock; + } sci->sc_freesegs = kbufs[4]; sci->sc_nfreesegs = argv[4].v_nmembs; @@ -2510,7 +2510,7 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv, out_unlock: sci->sc_freesegs = NULL; sci->sc_nfreesegs = 0; - nilfs_clear_gcdat_inode(nilfs); + nilfs_mdt_clear_shadow_map(nilfs->ns_dat); nilfs_transaction_unlock(sbi); return err; } diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 6eeb4f072f8..b7666bc0425 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -96,7 +96,6 @@ void destroy_nilfs(struct the_nilfs *nilfs) nilfs_mdt_destroy(nilfs->ns_sufile); nilfs_mdt_destroy(nilfs->ns_cpfile); nilfs_mdt_destroy(nilfs->ns_dat); - nilfs_mdt_destroy(nilfs->ns_gc_dat); } if (nilfs_init(nilfs)) { brelse(nilfs->ns_sbh[0]); @@ -131,20 +130,14 @@ static int nilfs_load_super_root(struct the_nilfs *nilfs, sector_t sr_block) if (unlikely(!nilfs->ns_dat)) goto failed; - nilfs->ns_gc_dat = nilfs_dat_new(nilfs, dat_entry_size); - if (unlikely(!nilfs->ns_gc_dat)) - goto failed_dat; - nilfs->ns_cpfile = nilfs_cpfile_new(nilfs, checkpoint_size); if (unlikely(!nilfs->ns_cpfile)) - goto failed_gc_dat; + goto failed_dat; nilfs->ns_sufile = nilfs_sufile_new(nilfs, segment_usage_size); if (unlikely(!nilfs->ns_sufile)) goto failed_cpfile; - nilfs_mdt_set_shadow(nilfs->ns_dat, nilfs->ns_gc_dat); - err = nilfs_dat_read(nilfs->ns_dat, (void *)bh_sr->b_data + NILFS_SR_DAT_OFFSET(inode_size)); if (unlikely(err)) @@ -173,9 +166,6 @@ static int nilfs_load_super_root(struct the_nilfs *nilfs, sector_t sr_block) failed_cpfile: nilfs_mdt_destroy(nilfs->ns_cpfile); - failed_gc_dat: - nilfs_mdt_destroy(nilfs->ns_gc_dat); - failed_dat: nilfs_mdt_destroy(nilfs->ns_dat); goto failed; @@ -371,7 +361,6 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) nilfs_mdt_destroy(nilfs->ns_cpfile); nilfs_mdt_destroy(nilfs->ns_sufile); nilfs_mdt_destroy(nilfs->ns_dat); - nilfs_mdt_destroy(nilfs->ns_gc_dat); failed: nilfs_clear_recovery_info(&ri); diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index 1908dc7bbd8..a5178dc43df 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -74,7 +74,6 @@ enum { * @ns_dat: DAT file inode * @ns_cpfile: checkpoint file inode * @ns_sufile: segusage file inode - * @ns_gc_dat: shadow inode of the DAT file inode for GC * @ns_cptree: rb-tree of all mounted checkpoints (nilfs_root) * @ns_cptree_lock: lock protecting @ns_cptree * @ns_gc_inodes: dummy inodes to keep live blocks @@ -149,7 +148,6 @@ struct the_nilfs { struct inode *ns_dat; struct inode *ns_cpfile; struct inode *ns_sufile; - struct inode *ns_gc_dat; /* Checkpoint tree */ struct rb_root ns_cptree; -- cgit v1.2.3 From f1e89c86fdd0f5e59f6768146c86437934202033 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 5 Sep 2010 12:20:59 +0900 Subject: nilfs2: use iget for all metadata files This makes use of iget5_locked to allocate or get inode for metadata files to stop using own inode allocator. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/cpfile.c | 49 +++++++++++++++++++++------------- fs/nilfs2/cpfile.h | 4 +-- fs/nilfs2/dat.c | 61 ++++++++++++++++++++++++------------------ fs/nilfs2/dat.h | 4 +-- fs/nilfs2/ifile.c | 51 ++++++++++++++++++++++++----------- fs/nilfs2/ifile.h | 4 ++- fs/nilfs2/inode.c | 13 ++++++--- fs/nilfs2/mdt.c | 16 +++++------ fs/nilfs2/mdt.h | 3 +-- fs/nilfs2/nilfs.h | 2 ++ fs/nilfs2/sufile.c | 73 +++++++++++++++++++++++++++++---------------------- fs/nilfs2/sufile.h | 4 +-- fs/nilfs2/super.c | 21 ++++++++++----- fs/nilfs2/the_nilfs.c | 58 ++++++++++++++-------------------------- 14 files changed, 207 insertions(+), 156 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c index 18737818db6..03de1da8795 100644 --- a/fs/nilfs2/cpfile.c +++ b/fs/nilfs2/cpfile.c @@ -933,27 +933,40 @@ int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat) } /** - * nilfs_cpfile_read - read cpfile inode - * @cpfile: cpfile inode - * @raw_inode: on-disk cpfile inode - */ -int nilfs_cpfile_read(struct inode *cpfile, struct nilfs_inode *raw_inode) -{ - return nilfs_read_inode_common(cpfile, raw_inode); -} - -/** - * nilfs_cpfile_new - create cpfile - * @nilfs: nilfs object + * nilfs_cpfile_read - read or get cpfile inode + * @sb: super block instance * @cpsize: size of a checkpoint entry + * @raw_inode: on-disk cpfile inode + * @inodep: buffer to store the inode */ -struct inode *nilfs_cpfile_new(struct the_nilfs *nilfs, size_t cpsize) +int nilfs_cpfile_read(struct super_block *sb, size_t cpsize, + struct nilfs_inode *raw_inode, struct inode **inodep) { struct inode *cpfile; + int err; - cpfile = nilfs_mdt_new(nilfs, NULL, NILFS_CPFILE_INO, 0); - if (cpfile) - nilfs_mdt_set_entry_size(cpfile, cpsize, - sizeof(struct nilfs_cpfile_header)); - return cpfile; + cpfile = nilfs_iget_locked(sb, NULL, NILFS_CPFILE_INO); + if (unlikely(!cpfile)) + return -ENOMEM; + if (!(cpfile->i_state & I_NEW)) + goto out; + + err = nilfs_mdt_init(cpfile, NILFS_MDT_GFP, 0); + if (err) + goto failed; + + nilfs_mdt_set_entry_size(cpfile, cpsize, + sizeof(struct nilfs_cpfile_header)); + + err = nilfs_read_inode_common(cpfile, raw_inode); + if (err) + goto failed; + + unlock_new_inode(cpfile); + out: + *inodep = cpfile; + return 0; + failed: + iget_failed(cpfile); + return err; } diff --git a/fs/nilfs2/cpfile.h b/fs/nilfs2/cpfile.h index bc0809e0ab4..a242b9a314f 100644 --- a/fs/nilfs2/cpfile.h +++ b/fs/nilfs2/cpfile.h @@ -40,7 +40,7 @@ int nilfs_cpfile_get_stat(struct inode *, struct nilfs_cpstat *); ssize_t nilfs_cpfile_get_cpinfo(struct inode *, __u64 *, int, void *, unsigned, size_t); -int nilfs_cpfile_read(struct inode *cpfile, struct nilfs_inode *raw_inode); -struct inode *nilfs_cpfile_new(struct the_nilfs *nilfs, size_t cpsize); +int nilfs_cpfile_read(struct super_block *sb, size_t cpsize, + struct nilfs_inode *raw_inode, struct inode **inodep); #endif /* _NILFS_CPFILE_H */ diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c index 7091c4e0f04..ab04a68f425 100644 --- a/fs/nilfs2/dat.c +++ b/fs/nilfs2/dat.c @@ -463,39 +463,48 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz, } /** - * nilfs_dat_read - read dat inode - * @dat: dat inode - * @raw_inode: on-disk dat inode - */ -int nilfs_dat_read(struct inode *dat, struct nilfs_inode *raw_inode) -{ - return nilfs_read_inode_common(dat, raw_inode); -} - -/** - * nilfs_dat_new - create dat file - * @nilfs: nilfs object + * nilfs_dat_read - read or get dat inode + * @sb: super block instance * @entry_size: size of a dat entry + * @raw_inode: on-disk dat inode + * @inodep: buffer to store the inode */ -struct inode *nilfs_dat_new(struct the_nilfs *nilfs, size_t entry_size) +int nilfs_dat_read(struct super_block *sb, size_t entry_size, + struct nilfs_inode *raw_inode, struct inode **inodep) { static struct lock_class_key dat_lock_key; struct inode *dat; struct nilfs_dat_info *di; int err; - dat = nilfs_mdt_new(nilfs, NULL, NILFS_DAT_INO, sizeof(*di)); - if (dat) { - err = nilfs_palloc_init_blockgroup(dat, entry_size); - if (unlikely(err)) { - nilfs_mdt_destroy(dat); - return NULL; - } + dat = nilfs_iget_locked(sb, NULL, NILFS_DAT_INO); + if (unlikely(!dat)) + return -ENOMEM; + if (!(dat->i_state & I_NEW)) + goto out; - di = NILFS_DAT_I(dat); - lockdep_set_class(&di->mi.mi_sem, &dat_lock_key); - nilfs_palloc_setup_cache(dat, &di->palloc_cache); - nilfs_mdt_setup_shadow_map(dat, &di->shadow); - } - return dat; + err = nilfs_mdt_init(dat, NILFS_MDT_GFP, sizeof(*di)); + if (err) + goto failed; + + err = nilfs_palloc_init_blockgroup(dat, entry_size); + if (err) + goto failed; + + di = NILFS_DAT_I(dat); + lockdep_set_class(&di->mi.mi_sem, &dat_lock_key); + nilfs_palloc_setup_cache(dat, &di->palloc_cache); + nilfs_mdt_setup_shadow_map(dat, &di->shadow); + + err = nilfs_read_inode_common(dat, raw_inode); + if (err) + goto failed; + + unlock_new_inode(dat); + out: + *inodep = dat; + return 0; + failed: + iget_failed(dat); + return err; } diff --git a/fs/nilfs2/dat.h b/fs/nilfs2/dat.h index d31c3aab0ef..cbd8e973250 100644 --- a/fs/nilfs2/dat.h +++ b/fs/nilfs2/dat.h @@ -53,7 +53,7 @@ int nilfs_dat_freev(struct inode *, __u64 *, size_t); int nilfs_dat_move(struct inode *, __u64, sector_t); ssize_t nilfs_dat_get_vinfo(struct inode *, void *, unsigned, size_t); -int nilfs_dat_read(struct inode *dat, struct nilfs_inode *raw_inode); -struct inode *nilfs_dat_new(struct the_nilfs *nilfs, size_t entry_size); +int nilfs_dat_read(struct super_block *sb, size_t entry_size, + struct nilfs_inode *raw_inode, struct inode **inodep); #endif /* _NILFS_DAT_H */ diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c index 922d9dd42c8..9f8a2da67f9 100644 --- a/fs/nilfs2/ifile.c +++ b/fs/nilfs2/ifile.c @@ -161,25 +161,46 @@ int nilfs_ifile_get_inode_block(struct inode *ifile, ino_t ino, } /** - * nilfs_ifile_new - create inode file - * @sbi: nilfs_sb_info struct + * nilfs_ifile_read - read or get ifile inode + * @sb: super block instance + * @root: root object * @inode_size: size of an inode + * @raw_inode: on-disk ifile inode + * @inodep: buffer to store the inode */ -struct inode *nilfs_ifile_new(struct nilfs_sb_info *sbi, size_t inode_size) +int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, + size_t inode_size, struct nilfs_inode *raw_inode, + struct inode **inodep) { struct inode *ifile; int err; - ifile = nilfs_mdt_new(sbi->s_nilfs, sbi->s_super, NILFS_IFILE_INO, - sizeof(struct nilfs_ifile_info)); - if (ifile) { - err = nilfs_palloc_init_blockgroup(ifile, inode_size); - if (unlikely(err)) { - nilfs_mdt_destroy(ifile); - return NULL; - } - nilfs_palloc_setup_cache(ifile, - &NILFS_IFILE_I(ifile)->palloc_cache); - } - return ifile; + ifile = nilfs_iget_locked(sb, root, NILFS_IFILE_INO); + if (unlikely(!ifile)) + return -ENOMEM; + if (!(ifile->i_state & I_NEW)) + goto out; + + err = nilfs_mdt_init(ifile, NILFS_MDT_GFP, + sizeof(struct nilfs_ifile_info)); + if (err) + goto failed; + + err = nilfs_palloc_init_blockgroup(ifile, inode_size); + if (err) + goto failed; + + nilfs_palloc_setup_cache(ifile, &NILFS_IFILE_I(ifile)->palloc_cache); + + err = nilfs_read_inode_common(ifile, raw_inode); + if (err) + goto failed; + + unlock_new_inode(ifile); + out: + *inodep = ifile; + return 0; + failed: + iget_failed(ifile); + return err; } diff --git a/fs/nilfs2/ifile.h b/fs/nilfs2/ifile.h index cbca32e498f..59b6f2b51df 100644 --- a/fs/nilfs2/ifile.h +++ b/fs/nilfs2/ifile.h @@ -49,6 +49,8 @@ int nilfs_ifile_create_inode(struct inode *, ino_t *, struct buffer_head **); int nilfs_ifile_delete_inode(struct inode *, ino_t); int nilfs_ifile_get_inode_block(struct inode *, ino_t, struct buffer_head **); -struct inode *nilfs_ifile_new(struct nilfs_sb_info *sbi, size_t inode_size); +int nilfs_ifile_read(struct super_block *sb, struct nilfs_root *root, + size_t inode_size, struct nilfs_inode *raw_inode, + struct inode **inodep); #endif /* _NILFS_IFILE_H */ diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 5485dd12da6..5b3d43fb4e1 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -506,16 +506,23 @@ static int nilfs_iget_set(struct inode *inode, void *opaque) return 0; } -struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root, - unsigned long ino) +struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root, + unsigned long ino) { struct nilfs_iget_args args = { .ino = ino, .root = root, .cno = 0, .for_gc = 0 }; + + return iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args); +} + +struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root, + unsigned long ino) +{ struct inode *inode; int err; - inode = iget5_locked(sb, ino, nilfs_iget_test, nilfs_iget_set, &args); + inode = nilfs_iget_locked(sb, root, ino); if (unlikely(!inode)) return ERR_PTR(-ENOMEM); if (!(inode->i_state & I_NEW)) diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 3bbd340a513..44326cfe1fa 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -444,8 +444,7 @@ static const struct inode_operations def_mdt_iops; static const struct file_operations def_mdt_fops; -int nilfs_mdt_init(struct inode *inode, struct the_nilfs *nilfs, - gfp_t gfp_mask, size_t objsz) +int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz) { struct nilfs_mdt_info *mi; @@ -453,13 +452,17 @@ int nilfs_mdt_init(struct inode *inode, struct the_nilfs *nilfs, if (!mi) return -ENOMEM; - mi->mi_nilfs = nilfs; + mi->mi_nilfs = NILFS_I_NILFS(inode); init_rwsem(&mi->mi_sem); inode->i_private = mi; inode->i_mode = S_IFREG; mapping_set_gfp_mask(inode->i_mapping, gfp_mask); - inode->i_mapping->backing_dev_info = nilfs->ns_bdi; + inode->i_mapping->backing_dev_info = inode->i_sb->s_bdi; + + inode->i_op = &def_mdt_iops; + inode->i_fop = &def_mdt_fops; + inode->i_mapping->a_ops = &def_mdt_aops; return 0; } @@ -544,13 +547,10 @@ struct inode *nilfs_mdt_new(struct the_nilfs *nilfs, struct super_block *sb, if (!inode) return NULL; - if (nilfs_mdt_init(inode, nilfs, NILFS_MDT_GFP, objsz) < 0) { + if (nilfs_mdt_init(inode, NILFS_MDT_GFP, objsz) < 0) { nilfs_destroy_inode(inode); return NULL; } - inode->i_op = &def_mdt_iops; - inode->i_fop = &def_mdt_fops; - inode->i_mapping->a_ops = &def_mdt_aops; return inode; } diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index 1e0901c3fd6..73ff7c05571 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -85,8 +85,7 @@ int nilfs_mdt_forget_block(struct inode *, unsigned long); int nilfs_mdt_mark_block_dirty(struct inode *, unsigned long); int nilfs_mdt_fetch_dirty(struct inode *); -int nilfs_mdt_init(struct inode *inode, struct the_nilfs *nilfs, - gfp_t gfp_mask, size_t objsz); +int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz); struct inode *nilfs_mdt_new(struct the_nilfs *, struct super_block *, ino_t, size_t); struct inode *nilfs_mdt_new_common(struct the_nilfs *, struct super_block *, diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index e9f457951e3..2ca2ca5ca84 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -244,6 +244,8 @@ extern int nilfs_get_block(struct inode *, sector_t, struct buffer_head *, int); extern void nilfs_set_inode_flags(struct inode *); extern int nilfs_read_inode_common(struct inode *, struct nilfs_inode *); extern void nilfs_write_inode_common(struct inode *, struct nilfs_inode *, int); +struct inode *nilfs_iget_locked(struct super_block *sb, struct nilfs_root *root, + unsigned long ino); struct inode *nilfs_iget(struct super_block *sb, struct nilfs_root *root, unsigned long ino); extern struct inode *nilfs_iget_for_gc(struct super_block *sb, diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 3c6cc6005c2..599d9c27761 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -635,46 +635,55 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf, } /** - * nilfs_sufile_read - read sufile inode - * @sufile: sufile inode + * nilfs_sufile_read - read or get sufile inode + * @sb: super block instance + * @susize: size of a segment usage entry * @raw_inode: on-disk sufile inode + * @inodep: buffer to store the inode */ -int nilfs_sufile_read(struct inode *sufile, struct nilfs_inode *raw_inode) +int nilfs_sufile_read(struct super_block *sb, size_t susize, + struct nilfs_inode *raw_inode, struct inode **inodep) { - struct nilfs_sufile_info *sui = NILFS_SUI(sufile); + struct inode *sufile; + struct nilfs_sufile_info *sui; struct buffer_head *header_bh; struct nilfs_sufile_header *header; void *kaddr; - int ret; + int err; - ret = nilfs_read_inode_common(sufile, raw_inode); - if (ret < 0) - return ret; + sufile = nilfs_iget_locked(sb, NULL, NILFS_SUFILE_INO); + if (unlikely(!sufile)) + return -ENOMEM; + if (!(sufile->i_state & I_NEW)) + goto out; - ret = nilfs_sufile_get_header_block(sufile, &header_bh); - if (!ret) { - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); - header = kaddr + bh_offset(header_bh); - sui->ncleansegs = le64_to_cpu(header->sh_ncleansegs); - kunmap_atomic(kaddr, KM_USER0); - brelse(header_bh); - } - return ret; -} + err = nilfs_mdt_init(sufile, NILFS_MDT_GFP, sizeof(*sui)); + if (err) + goto failed; -/** - * nilfs_sufile_new - create sufile - * @nilfs: nilfs object - * @susize: size of a segment usage entry - */ -struct inode *nilfs_sufile_new(struct the_nilfs *nilfs, size_t susize) -{ - struct inode *sufile; + nilfs_mdt_set_entry_size(sufile, susize, + sizeof(struct nilfs_sufile_header)); + + err = nilfs_read_inode_common(sufile, raw_inode); + if (err) + goto failed; + + err = nilfs_sufile_get_header_block(sufile, &header_bh); + if (err) + goto failed; - sufile = nilfs_mdt_new(nilfs, NULL, NILFS_SUFILE_INO, - sizeof(struct nilfs_sufile_info)); - if (sufile) - nilfs_mdt_set_entry_size(sufile, susize, - sizeof(struct nilfs_sufile_header)); - return sufile; + sui = NILFS_SUI(sufile); + kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + header = kaddr + bh_offset(header_bh); + sui->ncleansegs = le64_to_cpu(header->sh_ncleansegs); + kunmap_atomic(kaddr, KM_USER0); + brelse(header_bh); + + unlock_new_inode(sufile); + out: + *inodep = sufile; + return 0; + failed: + iget_failed(sufile); + return err; } diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h index 15163b8aff7..203f6102a62 100644 --- a/fs/nilfs2/sufile.h +++ b/fs/nilfs2/sufile.h @@ -61,8 +61,8 @@ void nilfs_sufile_do_cancel_free(struct inode *, __u64, struct buffer_head *, void nilfs_sufile_do_set_error(struct inode *, __u64, struct buffer_head *, struct buffer_head *); -int nilfs_sufile_read(struct inode *sufile, struct nilfs_inode *raw_inode); -struct inode *nilfs_sufile_new(struct the_nilfs *nilfs, size_t susize); +int nilfs_sufile_read(struct super_block *sb, size_t susize, + struct nilfs_inode *raw_inode, struct inode **inodep); /** * nilfs_sufile_scrap - make a segment garbage diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 5893cb27c90..39e7d7f8eda 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -356,6 +356,10 @@ static void nilfs_put_super(struct super_block *sb) up_write(&nilfs->ns_sem); } + iput(nilfs->ns_sufile); + iput(nilfs->ns_cpfile); + iput(nilfs->ns_dat); + destroy_nilfs(nilfs); sbi->s_super = NULL; sb->s_fs_info = NULL; @@ -403,10 +407,6 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, if (root->ifile) goto reuse; /* already attached checkpoint */ - root->ifile = nilfs_ifile_new(sbi, nilfs->ns_inode_size); - if (!root->ifile) - goto failed; - down_read(&nilfs->ns_segctor_sem); err = nilfs_cpfile_get_checkpoint(nilfs->ns_cpfile, cno, 0, &raw_cp, &bh_cp); @@ -421,8 +421,10 @@ int nilfs_attach_checkpoint(struct nilfs_sb_info *sbi, __u64 cno, int curr_mnt, } goto failed; } - err = nilfs_read_inode_common(root->ifile, &raw_cp->cp_ifile_inode); - if (unlikely(err)) + + err = nilfs_ifile_read(sbi->s_super, root, nilfs->ns_inode_size, + &raw_cp->cp_ifile_inode, &root->ifile); + if (err) goto failed_bh; atomic_set(&root->inodes_count, le64_to_cpu(raw_cp->cp_inodes_count)); @@ -895,7 +897,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) if (err) { printk(KERN_ERR "NILFS: error loading last checkpoint " "(checkpoint number=%llu).\n", (unsigned long long)cno); - goto failed_nilfs; + goto failed_unload; } if (!(sb->s_flags & MS_RDONLY)) { @@ -924,6 +926,11 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) failed_checkpoint: nilfs_put_root(fsroot); + failed_unload: + iput(nilfs->ns_sufile); + iput(nilfs->ns_cpfile); + iput(nilfs->ns_dat); + failed_nilfs: destroy_nilfs(nilfs); diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index b7666bc0425..4d6763e28eb 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -92,11 +92,6 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev) void destroy_nilfs(struct the_nilfs *nilfs) { might_sleep(); - if (nilfs_loaded(nilfs)) { - nilfs_mdt_destroy(nilfs->ns_sufile); - nilfs_mdt_destroy(nilfs->ns_cpfile); - nilfs_mdt_destroy(nilfs->ns_dat); - } if (nilfs_init(nilfs)) { brelse(nilfs->ns_sbh[0]); brelse(nilfs->ns_sbh[1]); @@ -104,11 +99,13 @@ void destroy_nilfs(struct the_nilfs *nilfs) kfree(nilfs); } -static int nilfs_load_super_root(struct the_nilfs *nilfs, sector_t sr_block) +static int nilfs_load_super_root(struct the_nilfs *nilfs, + struct super_block *sb, sector_t sr_block) { struct buffer_head *bh_sr; struct nilfs_super_root *raw_sr; struct nilfs_super_block **sbp = nilfs->ns_sbp; + struct nilfs_inode *rawi; unsigned dat_entry_size, segment_usage_size, checkpoint_size; unsigned inode_size; int err; @@ -125,34 +122,22 @@ static int nilfs_load_super_root(struct the_nilfs *nilfs, sector_t sr_block) inode_size = nilfs->ns_inode_size; - err = -ENOMEM; - nilfs->ns_dat = nilfs_dat_new(nilfs, dat_entry_size); - if (unlikely(!nilfs->ns_dat)) + rawi = (void *)bh_sr->b_data + NILFS_SR_DAT_OFFSET(inode_size); + err = nilfs_dat_read(sb, dat_entry_size, rawi, &nilfs->ns_dat); + if (err) goto failed; - nilfs->ns_cpfile = nilfs_cpfile_new(nilfs, checkpoint_size); - if (unlikely(!nilfs->ns_cpfile)) + rawi = (void *)bh_sr->b_data + NILFS_SR_CPFILE_OFFSET(inode_size); + err = nilfs_cpfile_read(sb, checkpoint_size, rawi, &nilfs->ns_cpfile); + if (err) goto failed_dat; - nilfs->ns_sufile = nilfs_sufile_new(nilfs, segment_usage_size); - if (unlikely(!nilfs->ns_sufile)) + rawi = (void *)bh_sr->b_data + NILFS_SR_SUFILE_OFFSET(inode_size); + err = nilfs_sufile_read(sb, segment_usage_size, rawi, + &nilfs->ns_sufile); + if (err) goto failed_cpfile; - err = nilfs_dat_read(nilfs->ns_dat, (void *)bh_sr->b_data + - NILFS_SR_DAT_OFFSET(inode_size)); - if (unlikely(err)) - goto failed_sufile; - - err = nilfs_cpfile_read(nilfs->ns_cpfile, (void *)bh_sr->b_data + - NILFS_SR_CPFILE_OFFSET(inode_size)); - if (unlikely(err)) - goto failed_sufile; - - err = nilfs_sufile_read(nilfs->ns_sufile, (void *)bh_sr->b_data + - NILFS_SR_SUFILE_OFFSET(inode_size)); - if (unlikely(err)) - goto failed_sufile; - raw_sr = (struct nilfs_super_root *)bh_sr->b_data; nilfs->ns_nongc_ctime = le64_to_cpu(raw_sr->sr_nongc_ctime); @@ -160,14 +145,11 @@ static int nilfs_load_super_root(struct the_nilfs *nilfs, sector_t sr_block) brelse(bh_sr); return err; - failed_sufile: - nilfs_mdt_destroy(nilfs->ns_sufile); - failed_cpfile: - nilfs_mdt_destroy(nilfs->ns_cpfile); + iput(nilfs->ns_cpfile); failed_dat: - nilfs_mdt_destroy(nilfs->ns_dat); + iput(nilfs->ns_dat); goto failed; } @@ -290,7 +272,7 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) goto scan_error; } - err = nilfs_load_super_root(nilfs, ri.ri_super_root); + err = nilfs_load_super_root(nilfs, sbi->s_super, ri.ri_super_root); if (unlikely(err)) { printk(KERN_ERR "NILFS: error loading super root.\n"); goto failed; @@ -358,9 +340,9 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) goto failed; failed_unload: - nilfs_mdt_destroy(nilfs->ns_cpfile); - nilfs_mdt_destroy(nilfs->ns_sufile); - nilfs_mdt_destroy(nilfs->ns_dat); + iput(nilfs->ns_cpfile); + iput(nilfs->ns_sufile); + iput(nilfs->ns_dat); failed: nilfs_clear_recovery_info(&ri); @@ -782,7 +764,7 @@ void nilfs_put_root(struct nilfs_root *root) rb_erase(&root->rb_node, &nilfs->ns_cptree); spin_unlock(&nilfs->ns_cptree_lock); if (root->ifile) - nilfs_mdt_destroy(root->ifile); + iput(root->ifile); kfree(root); } -- cgit v1.2.3 From c6e071884aca360a14c21757d760e76ec34b4894 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 5 Sep 2010 00:23:50 +0900 Subject: nilfs2: get rid of mi_nilfs back pointer to nilfs object This removes a back pointer to nilfs object from nilfs_mdt_info structure that is attached to metadata files. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 9 +++------ fs/nilfs2/mdt.h | 8 ++------ fs/nilfs2/sufile.c | 4 ++-- fs/nilfs2/sufile.h | 2 +- 4 files changed, 8 insertions(+), 15 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 44326cfe1fa..32695f3c4b9 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -78,7 +78,7 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block, struct buffer_head *, void *)) { - struct the_nilfs *nilfs = NILFS_MDT(inode)->mi_nilfs; + struct the_nilfs *nilfs = NILFS_I_NILFS(inode); struct super_block *sb = inode->i_sb; struct nilfs_transaction_info ti; struct buffer_head *bh; @@ -167,9 +167,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff, unlock_buffer(bh); goto failed_bh; } - bh->b_bdev = NILFS_MDT(inode)->mi_nilfs->ns_bdev; - bh->b_blocknr = (sector_t)blknum; - set_buffer_mapped(bh); + map_bh(bh, inode->i_sb, (sector_t)blknum); bh->b_end_io = end_buffer_read_sync; get_bh(bh); @@ -412,7 +410,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) return 0; sb = inode->i_sb; - nilfs = NILFS_MDT(inode)->mi_nilfs; + nilfs = NILFS_SB(sb)->s_nilfs; if (!sb) { down_read(&nilfs->ns_writer_sem); @@ -452,7 +450,6 @@ int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz) if (!mi) return -ENOMEM; - mi->mi_nilfs = NILFS_I_NILFS(inode); init_rwsem(&mi->mi_sem); inode->i_private = mi; diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index 73ff7c05571..76356d2899e 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -37,7 +37,6 @@ struct nilfs_shadow_map { /** * struct nilfs_mdt_info - on-memory private data of meta data files - * @mi_nilfs: back pointer to the_nilfs struct * @mi_sem: reader/writer semaphore for meta data operations * @mi_bgl: per-blockgroup locking * @mi_entry_size: size of an entry @@ -49,7 +48,6 @@ struct nilfs_shadow_map { * @mi_blocks_per_desc_block: number of blocks per descriptor block */ struct nilfs_mdt_info { - struct the_nilfs *mi_nilfs; struct rw_semaphore mi_sem; struct blockgroup_lock *mi_bgl; unsigned mi_entry_size; @@ -68,9 +66,7 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode) static inline struct the_nilfs *NILFS_I_NILFS(struct inode *inode) { - struct super_block *sb = inode->i_sb; - - return sb ? NILFS_SB(sb)->s_nilfs : NILFS_MDT(inode)->mi_nilfs; + return NILFS_SB(inode->i_sb)->s_nilfs; } /* Default GFP flags using highmem */ @@ -117,7 +113,7 @@ static inline void nilfs_mdt_clear_dirty(struct inode *inode) static inline __u64 nilfs_mdt_cno(struct inode *inode) { - return NILFS_MDT(inode)->mi_nilfs->ns_cno; + return NILFS_I_NILFS(inode)->ns_cno; } #define nilfs_mdt_bgl_lock(inode, bg) \ diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 599d9c27761..1d6f488ccae 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -505,7 +505,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat) { struct buffer_head *header_bh; struct nilfs_sufile_header *header; - struct the_nilfs *nilfs = NILFS_MDT(sufile)->mi_nilfs; + struct the_nilfs *nilfs = NILFS_I_NILFS(sufile); void *kaddr; int ret; @@ -583,7 +583,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf, struct nilfs_segment_usage *su; struct nilfs_suinfo *si = buf; size_t susz = NILFS_MDT(sufile)->mi_entry_size; - struct the_nilfs *nilfs = NILFS_MDT(sufile)->mi_nilfs; + struct the_nilfs *nilfs = NILFS_I_NILFS(sufile); void *kaddr; unsigned long nsegs, segusages_per_block; ssize_t n; diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h index 203f6102a62..a943fbacb45 100644 --- a/fs/nilfs2/sufile.h +++ b/fs/nilfs2/sufile.h @@ -31,7 +31,7 @@ static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) { - return NILFS_MDT(sufile)->mi_nilfs->ns_nsegments; + return NILFS_I_NILFS(sufile)->ns_nsegments; } unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); -- cgit v1.2.3 From 090fd5b10165033d7c30afde0a7e59141d820602 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 5 Sep 2010 16:17:35 +0900 Subject: nilfs2: get rid of back pointer to writable sb instance Nilfs object holds a back pointer to a writable super block instance in nilfs->ns_writer, and this became eliminable since sb is now made per device and all inodes have a valid pointer to it. This deletes the ns_writer pointer and a reader/writer semaphore protecting it. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 33 ++------------------------------- fs/nilfs2/recovery.c | 4 ---- fs/nilfs2/segment.c | 4 ---- fs/nilfs2/the_nilfs.c | 1 - fs/nilfs2/the_nilfs.h | 21 --------------------- 5 files changed, 2 insertions(+), 61 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 32695f3c4b9..0a2ccfc0d6f 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -78,25 +78,11 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block, struct buffer_head *, void *)) { - struct the_nilfs *nilfs = NILFS_I_NILFS(inode); struct super_block *sb = inode->i_sb; struct nilfs_transaction_info ti; struct buffer_head *bh; int err; - if (!sb) { - /* - * Make sure this function is not called from any - * read-only context. - */ - if (!nilfs->ns_writer) { - WARN_ON(1); - err = -EROFS; - goto out; - } - sb = nilfs->ns_writer->s_super; - } - nilfs_transaction_begin(sb, &ti, 0); err = -ENOMEM; @@ -112,7 +98,7 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block, if (buffer_uptodate(bh)) goto failed_bh; - bh->b_bdev = nilfs->ns_bdev; + bh->b_bdev = sb->s_bdev; err = nilfs_mdt_insert_new_block(inode, block, bh, init_block); if (likely(!err)) { get_bh(bh); @@ -129,7 +115,7 @@ static int nilfs_mdt_create_block(struct inode *inode, unsigned long block, err = nilfs_transaction_commit(sb); else nilfs_transaction_abort(sb); - out: + return err; } @@ -398,8 +384,6 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) { struct inode *inode; struct super_block *sb; - struct the_nilfs *nilfs; - struct nilfs_sb_info *writer = NULL; int err = 0; redirty_page_for_writepage(wbc, page); @@ -410,25 +394,12 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc) return 0; sb = inode->i_sb; - nilfs = NILFS_SB(sb)->s_nilfs; - - if (!sb) { - down_read(&nilfs->ns_writer_sem); - writer = nilfs->ns_writer; - if (!writer) { - up_read(&nilfs->ns_writer_sem); - return -EROFS; - } - sb = writer->s_super; - } if (wbc->sync_mode == WB_SYNC_ALL) err = nilfs_construct_segment(sb); else if (wbc->for_reclaim) nilfs_flush_segment(sb, inode->i_ino); - if (writer) - up_read(&nilfs->ns_writer_sem); return err; } diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index dcb5a9812c6..5d2711c28da 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -440,7 +440,6 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, segnum[2] = ri->ri_segnum; segnum[3] = ri->ri_nextnum; - nilfs_attach_writer(nilfs, sbi); /* * Releasing the next segment of the latest super root. * The next segment is invalidated by this recovery. @@ -480,7 +479,6 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, failed: /* No need to recover sufile because it will be destroyed on error */ - nilfs_detach_writer(nilfs, sbi); return err; } @@ -599,7 +597,6 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, }; int state = RF_INIT_ST; - nilfs_attach_writer(nilfs, sbi); pseg_start = ri->ri_lsegs_start; seg_seq = ri->ri_lsegs_start_seq; segnum = nilfs_get_segnum_of_block(nilfs, pseg_start); @@ -690,7 +687,6 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs, out: brelse(bh_sum); dispose_recovery_list(&dsync_blocks); - nilfs_detach_writer(nilfs, sbi); return err; confused: diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index b0c5e08d06c..56350bf1f79 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -2799,7 +2799,6 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci) int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, struct nilfs_root *root) { - struct the_nilfs *nilfs = sbi->s_nilfs; int err; if (NILFS_SC(sbi)) { @@ -2815,10 +2814,8 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi, if (!sbi->s_sc_info) return -ENOMEM; - nilfs_attach_writer(nilfs, sbi); err = nilfs_segctor_start_thread(NILFS_SC(sbi)); if (err) { - nilfs_detach_writer(nilfs, sbi); kfree(sbi->s_sc_info); sbi->s_sc_info = NULL; } @@ -2855,5 +2852,4 @@ void nilfs_detach_segment_constructor(struct nilfs_sb_info *sbi) up_write(&nilfs->ns_segctor_sem); nilfs_dispose_list(sbi, &garbage_list, 1); - nilfs_detach_writer(nilfs, sbi); } diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 4cc705a1d13..a94aa57c4bd 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -75,7 +75,6 @@ struct the_nilfs *alloc_nilfs(struct block_device *bdev) nilfs->ns_bdev = bdev; atomic_set(&nilfs->ns_ndirtyblks, 0); init_rwsem(&nilfs->ns_sem); - init_rwsem(&nilfs->ns_writer_sem); INIT_LIST_HEAD(&nilfs->ns_gc_inodes); spin_lock_init(&nilfs->ns_last_segment_lock); nilfs->ns_cptree = RB_ROOT; diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index cae56f338b6..bbbc1c748aa 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -48,9 +48,7 @@ enum { * @ns_flags: flags * @ns_bdev: block device * @ns_bdi: backing dev info - * @ns_writer: back pointer to writable nilfs_sb_info * @ns_sem: semaphore for shared states - * @ns_writer_sem: semaphore protecting ns_writer attach/detach * @ns_sbh: buffer heads of on-disk super blocks * @ns_sbp: pointers to super block data * @ns_sbwtime: previous write time of super block @@ -93,9 +91,7 @@ struct the_nilfs { struct block_device *ns_bdev; struct backing_dev_info *ns_bdi; - struct nilfs_sb_info *ns_writer; struct rw_semaphore ns_sem; - struct rw_semaphore ns_writer_sem; /* * used for @@ -252,23 +248,6 @@ static inline void nilfs_get_root(struct nilfs_root *root) atomic_inc(&root->count); } -static inline void -nilfs_attach_writer(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) -{ - down_write(&nilfs->ns_writer_sem); - nilfs->ns_writer = sbi; - up_write(&nilfs->ns_writer_sem); -} - -static inline void -nilfs_detach_writer(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi) -{ - down_write(&nilfs->ns_writer_sem); - if (sbi == nilfs->ns_writer) - nilfs->ns_writer = NULL; - up_write(&nilfs->ns_writer_sem); -} - static inline int nilfs_valid_fs(struct the_nilfs *nilfs) { unsigned valid_fs; -- cgit v1.2.3 From 2879ed66e4c6da1dfc6bb0bd04566b61824f9256 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 5 Sep 2010 13:35:53 +0900 Subject: nilfs2: remove own inode allocator and destructor for metadata files This finally removes own inode allocator and destructor functions for metadata files. Several routines, nilfs_mdt_new(), nilfs_mdt_new_common(), nilfs_mdt_clear(), nilfs_mdt_destroy(), and nilfs_alloc_inode_common() will be gone. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 111 ------------------------------------------------------ fs/nilfs2/mdt.h | 5 --- fs/nilfs2/nilfs.h | 1 - fs/nilfs2/super.c | 9 +---- 4 files changed, 2 insertions(+), 124 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index 0a2ccfc0d6f..d60fdb097d5 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -36,7 +36,6 @@ #define NILFS_MDT_MAX_RA_BLOCKS (16 - 1) -#define INIT_UNUSED_INODE_FIELDS static int nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block, @@ -435,93 +434,6 @@ int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz) return 0; } -/* - * NILFS2 uses pseudo inodes for meta data files such as DAT, cpfile, sufile, - * ifile, or gcinodes. This allows the B-tree code and segment constructor - * to treat them like regular files, and this helps to simplify the - * implementation. - * On the other hand, some of the pseudo inodes have an irregular point: - * They don't have valid inode->i_sb pointer because their lifetimes are - * longer than those of the super block structs; they may continue for - * several consecutive mounts/umounts. This would need discussions. - */ -/** - * nilfs_mdt_new_common - allocate a pseudo inode for metadata file - * @nilfs: nilfs object - * @sb: super block instance the metadata file belongs to - * @ino: inode number - */ -struct inode * -nilfs_mdt_new_common(struct the_nilfs *nilfs, struct super_block *sb, - ino_t ino) -{ - struct inode *inode = nilfs_alloc_inode_common(nilfs); - - if (!inode) - return NULL; - else { - struct address_space * const mapping = &inode->i_data; - - inode->i_sb = sb; /* sb may be NULL for some meta data files */ - inode->i_blkbits = nilfs->ns_blocksize_bits; - inode->i_flags = 0; - atomic_set(&inode->i_count, 1); - inode->i_nlink = 1; - inode->i_ino = ino; - -#ifdef INIT_UNUSED_INODE_FIELDS - atomic_set(&inode->i_writecount, 0); - inode->i_size = 0; - inode->i_blocks = 0; - inode->i_bytes = 0; - inode->i_generation = 0; -#ifdef CONFIG_QUOTA - memset(&inode->i_dquot, 0, sizeof(inode->i_dquot)); -#endif - inode->i_pipe = NULL; - inode->i_bdev = NULL; - inode->i_cdev = NULL; - inode->i_rdev = 0; -#ifdef CONFIG_SECURITY - inode->i_security = NULL; -#endif - inode->dirtied_when = 0; - - INIT_LIST_HEAD(&inode->i_list); - INIT_LIST_HEAD(&inode->i_sb_list); - inode->i_state = 0; -#endif - - spin_lock_init(&inode->i_lock); - mutex_init(&inode->i_mutex); - init_rwsem(&inode->i_alloc_sem); - - mapping->host = NULL; /* instead of inode */ - mapping->flags = 0; - mapping->assoc_mapping = NULL; - - inode->i_mapping = mapping; - } - - return inode; -} - -struct inode *nilfs_mdt_new(struct the_nilfs *nilfs, struct super_block *sb, - ino_t ino, size_t objsz) -{ - struct inode *inode; - - inode = nilfs_mdt_new_common(nilfs, sb, ino); - if (!inode) - return NULL; - - if (nilfs_mdt_init(inode, NILFS_MDT_GFP, objsz) < 0) { - nilfs_destroy_inode(inode); - return NULL; - } - return inode; -} - void nilfs_mdt_set_entry_size(struct inode *inode, unsigned entry_size, unsigned header_size) { @@ -688,26 +600,3 @@ void nilfs_mdt_clear_shadow_map(struct inode *inode) truncate_inode_pages(&shadow->frozen_btnodes, 0); up_write(&mi->mi_sem); } - -static void nilfs_mdt_clear(struct inode *inode) -{ - struct nilfs_inode_info *ii = NILFS_I(inode); - - invalidate_mapping_pages(inode->i_mapping, 0, -1); - truncate_inode_pages(inode->i_mapping, 0); - - if (test_bit(NILFS_I_BMAP, &ii->i_state)) - nilfs_bmap_clear(ii->i_bmap); - nilfs_btnode_cache_clear(&ii->i_btnode_cache); -} - -void nilfs_mdt_destroy(struct inode *inode) -{ - struct nilfs_mdt_info *mdi = NILFS_MDT(inode); - - if (mdi->mi_palloc_cache) - nilfs_palloc_destroy_cache(inode); - nilfs_mdt_clear(inode); - - nilfs_destroy_inode(inode); -} diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h index 76356d2899e..b13734bf352 100644 --- a/fs/nilfs2/mdt.h +++ b/fs/nilfs2/mdt.h @@ -82,11 +82,6 @@ int nilfs_mdt_mark_block_dirty(struct inode *, unsigned long); int nilfs_mdt_fetch_dirty(struct inode *); int nilfs_mdt_init(struct inode *inode, gfp_t gfp_mask, size_t objsz); -struct inode *nilfs_mdt_new(struct the_nilfs *, struct super_block *, ino_t, - size_t); -struct inode *nilfs_mdt_new_common(struct the_nilfs *, struct super_block *, - ino_t); -void nilfs_mdt_destroy(struct inode *); void nilfs_mdt_set_entry_size(struct inode *, unsigned, unsigned); int nilfs_mdt_setup_shadow_map(struct inode *inode, diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index f6e276eaaf6..f7560da5a56 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -266,7 +266,6 @@ extern int nilfs_mark_inode_dirty(struct inode *); extern void nilfs_dirty_inode(struct inode *); /* super.c */ -extern struct inode *nilfs_alloc_inode_common(struct the_nilfs *); extern struct inode *nilfs_alloc_inode(struct super_block *); extern void nilfs_destroy_inode(struct inode *); extern void nilfs_error(struct super_block *, const char *, const char *, ...) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index ab96d26bf7e..d92ebd5d60d 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -146,7 +146,7 @@ void nilfs_warning(struct super_block *sb, const char *function, } -struct inode *nilfs_alloc_inode_common(struct the_nilfs *nilfs) +struct inode *nilfs_alloc_inode(struct super_block *sb) { struct nilfs_inode_info *ii; @@ -157,15 +157,10 @@ struct inode *nilfs_alloc_inode_common(struct the_nilfs *nilfs) ii->i_state = 0; ii->i_cno = 0; ii->vfs_inode.i_version = 1; - nilfs_btnode_cache_init(&ii->i_btnode_cache, nilfs->ns_bdi); + nilfs_btnode_cache_init(&ii->i_btnode_cache, sb->s_bdi); return &ii->vfs_inode; } -struct inode *nilfs_alloc_inode(struct super_block *sb) -{ - return nilfs_alloc_inode_common(NILFS_SB(sb)->s_nilfs); -} - void nilfs_destroy_inode(struct inode *inode) { struct nilfs_mdt_info *mdi = NILFS_MDT(inode); -- cgit v1.2.3 From 026a7d63d55ba8656ed8c8a0733265cc7d47bb8c Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Thu, 7 Oct 2010 14:19:48 +0900 Subject: nilfs2: get rid of bdi from nilfs object Nilfs now can use sb->s_bdi to get backing_dev_info, so we use it instead of ns_bdi on the nilfs object and remove ns_bdi. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/mdt.c | 2 +- fs/nilfs2/segbuf.c | 3 ++- fs/nilfs2/super.c | 5 ++++- fs/nilfs2/the_nilfs.c | 4 ---- fs/nilfs2/the_nilfs.h | 2 -- 5 files changed, 7 insertions(+), 9 deletions(-) (limited to 'fs/nilfs2/mdt.c') diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c index d60fdb097d5..39a5b84e2c9 100644 --- a/fs/nilfs2/mdt.c +++ b/fs/nilfs2/mdt.c @@ -457,7 +457,7 @@ int nilfs_mdt_setup_shadow_map(struct inode *inode, struct nilfs_shadow_map *shadow) { struct nilfs_mdt_info *mi = NILFS_MDT(inode); - struct backing_dev_info *bdi = NILFS_I_NILFS(inode)->ns_bdi; + struct backing_dev_info *bdi = inode->i_sb->s_bdi; INIT_LIST_HEAD(&shadow->frozen_buffers); nilfs_mapping_init_once(&shadow->frozen_data); diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c index 4588fb9e93d..0f83e93935b 100644 --- a/fs/nilfs2/segbuf.c +++ b/fs/nilfs2/segbuf.c @@ -371,7 +371,8 @@ static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf, struct bio *bio = wi->bio; int err; - if (segbuf->sb_nbio > 0 && bdi_write_congested(wi->nilfs->ns_bdi)) { + if (segbuf->sb_nbio > 0 && + bdi_write_congested(segbuf->sb_super->s_bdi)) { wait_for_completion(&segbuf->sb_bio_event); segbuf->sb_nbio--; if (unlikely(atomic_read(&segbuf->sb_err))) { diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 92e8c769584..8e77016bafa 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -910,6 +910,7 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) struct the_nilfs *nilfs; struct nilfs_sb_info *sbi; struct nilfs_root *fsroot; + struct backing_dev_info *bdi; __u64 cno; int err; @@ -948,7 +949,9 @@ nilfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_export_op = &nilfs_export_ops; sb->s_root = NULL; sb->s_time_gran = 1; - sb->s_bdi = nilfs->ns_bdi; + + bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info; + sb->s_bdi = bdi ? : &default_backing_dev_info; err = load_nilfs(nilfs, sbi); if (err) diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index a94aa57c4bd..bd02b6127d3 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -535,7 +535,6 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data) { struct super_block *sb = sbi->s_super; struct nilfs_super_block *sbp; - struct backing_dev_info *bdi; int blocksize; int err; @@ -598,9 +597,6 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data) nilfs->ns_mount_state = le16_to_cpu(sbp->s_state); - bdi = nilfs->ns_bdev->bd_inode->i_mapping->backing_dev_info; - nilfs->ns_bdi = bdi ? : &default_backing_dev_info; - err = nilfs_store_log_cursor(nilfs, sbp); if (err) goto failed_sbh; diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h index bbbc1c748aa..69226e14b74 100644 --- a/fs/nilfs2/the_nilfs.h +++ b/fs/nilfs2/the_nilfs.h @@ -47,7 +47,6 @@ enum { * struct the_nilfs - struct to supervise multiple nilfs mount points * @ns_flags: flags * @ns_bdev: block device - * @ns_bdi: backing dev info * @ns_sem: semaphore for shared states * @ns_sbh: buffer heads of on-disk super blocks * @ns_sbp: pointers to super block data @@ -90,7 +89,6 @@ struct the_nilfs { unsigned long ns_flags; struct block_device *ns_bdev; - struct backing_dev_info *ns_bdi; struct rw_semaphore ns_sem; /* -- cgit v1.2.3