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-rw-r--r--fs/binfmt_elf_fdpic.c4
-rw-r--r--fs/cifs/CHANGES4
-rw-r--r--fs/cifs/cifsfs.c3
-rw-r--r--fs/cifs/connect.c13
-rw-r--r--fs/ext4/Kconfig1
-rw-r--r--fs/ext4/block_validity.c1
-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/ext4_extents.h3
-rw-r--r--fs/ext4/extents.c77
-rw-r--r--fs/ext4/fsync.c16
-rw-r--r--fs/ext4/inode.c225
-rw-r--r--fs/ext4/mballoc.h1
-rw-r--r--fs/ext4/super.c7
-rw-r--r--fs/ext4/xattr.c2
-rw-r--r--fs/fs-writeback.c18
-rw-r--r--fs/jbd2/checkpoint.c15
-rw-r--r--fs/jbd2/commit.c19
-rw-r--r--fs/jbd2/journal.c2
-rw-r--r--fs/namei.c1
-rw-r--r--fs/nilfs2/bmap.c4
-rw-r--r--fs/nilfs2/cpfile.c31
-rw-r--r--fs/nilfs2/direct.c17
-rw-r--r--fs/nilfs2/ioctl.c2
-rw-r--r--fs/reiserfs/bitmap.c3
-rw-r--r--fs/reiserfs/inode.c5
-rw-r--r--fs/reiserfs/journal.c18
-rw-r--r--fs/reiserfs/lock.c9
-rw-r--r--fs/reiserfs/namei.c7
-rw-r--r--fs/reiserfs/xattr.c26
-rw-r--r--fs/sysfs/dir.c14
-rw-r--r--fs/sysfs/sysfs.h15
31 files changed, 383 insertions, 182 deletions
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index c25256a5c5b..7dc85997e96 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1798,11 +1798,11 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
ELF_CORE_WRITE_EXTRA_DATA;
#endif
- if (file->f_pos != offset) {
+ if (cprm->file->f_pos != offset) {
/* Sanity check */
printk(KERN_WARNING
"elf_core_dump: file->f_pos (%lld) != offset (%lld)\n",
- file->f_pos, offset);
+ cprm->file->f_pos, offset);
}
end_coredump:
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 094ea65afc8..7b2600b380d 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -5,7 +5,9 @@ have duplicated data). Fix oops in cifs_lookup. Workaround problem
mounting to OS/400 Netserve. Fix oops in cifs_get_tcp_session.
Disable use of server inode numbers when server only
partially supports them (e.g. for one server querying inode numbers on
-FindFirst fails but QPathInfo queries works).
+FindFirst fails but QPathInfo queries works). Fix oops with dfs in
+cifs_put_smb_ses. Fix mmap to work on directio mounts (needed
+for OpenOffice when on forcedirectio mount e.g.)
Version 1.60
-------------
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 29f1da761bb..8c6a0362717 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -758,7 +758,7 @@ const struct file_operations cifs_file_ops = {
};
const struct file_operations cifs_file_direct_ops = {
- /* no mmap, no aio, no readv -
+ /* no aio, no readv -
BB reevaluate whether they can be done with directio, no cache */
.read = cifs_user_read,
.write = cifs_user_write,
@@ -767,6 +767,7 @@ const struct file_operations cifs_file_direct_ops = {
.lock = cifs_lock,
.fsync = cifs_fsync,
.flush = cifs_flush,
+ .mmap = cifs_file_mmap,
.splice_read = generic_file_splice_read,
#ifdef CONFIG_CIFS_POSIX
.unlocked_ioctl = cifs_ioctl,
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 63ea83ff687..3bbcaa716b3 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2287,12 +2287,12 @@ int
cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
char *mount_data_global, const char *devname)
{
- int rc = 0;
+ int rc;
int xid;
struct smb_vol *volume_info;
- struct cifsSesInfo *pSesInfo = NULL;
- struct cifsTconInfo *tcon = NULL;
- struct TCP_Server_Info *srvTcp = NULL;
+ struct cifsSesInfo *pSesInfo;
+ struct cifsTconInfo *tcon;
+ struct TCP_Server_Info *srvTcp;
char *full_path;
char *mount_data = mount_data_global;
#ifdef CONFIG_CIFS_DFS_UPCALL
@@ -2301,6 +2301,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
int referral_walks_count = 0;
try_mount_again:
#endif
+ rc = 0;
+ tcon = NULL;
+ pSesInfo = NULL;
+ srvTcp = NULL;
full_path = NULL;
xid = GetXid();
@@ -2597,6 +2601,7 @@ remote_path_check:
cleanup_volume_info(&volume_info);
referral_walks_count++;
+ FreeXid(xid);
goto try_mount_again;
}
#else /* No DFS support, return error on mount */
diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig
index 9acf7e80813..9ed1bb1f319 100644
--- a/fs/ext4/Kconfig
+++ b/fs/ext4/Kconfig
@@ -28,6 +28,7 @@ config EXT4_FS
config EXT4_USE_FOR_EXT23
bool "Use ext4 for ext2/ext3 file systems"
+ depends on EXT4_FS
depends on EXT3_FS=n || EXT2_FS=n
default y
help
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index 4df8621ec31..a60ab9aad57 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -16,7 +16,6 @@
#include <linux/module.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
-#include <linux/version.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include "ext4.h"
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 56f9271ee8c..af7b62699ea 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -699,6 +699,8 @@ struct ext4_inode_info {
unsigned int i_reserved_meta_blocks;
unsigned int i_allocated_meta_blocks;
unsigned short i_delalloc_reserved_flag;
+ sector_t i_da_metadata_calc_last_lblock;
+ int i_da_metadata_calc_len;
/* on-disk additional length */
__u16 i_extra_isize;
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index 2ca686454e8..bdb6ce7e2eb 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -225,7 +225,8 @@ static inline void ext4_ext_mark_initialized(struct ext4_extent *ext)
ext->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ext));
}
-extern int ext4_ext_calc_metadata_amount(struct inode *inode, int blocks);
+extern int ext4_ext_calc_metadata_amount(struct inode *inode,
+ sector_t lblocks);
extern ext4_fsblk_t ext_pblock(struct ext4_extent *ex);
extern ext4_fsblk_t idx_pblock(struct ext4_extent_idx *);
extern void ext4_ext_store_pblock(struct ext4_extent *, ext4_fsblk_t);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 3a7928f825e..7d7b74e9468 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -296,29 +296,44 @@ static inline int ext4_ext_space_root_idx(struct inode *inode, int check)
* to allocate @blocks
* Worse case is one block per extent
*/
-int ext4_ext_calc_metadata_amount(struct inode *inode, int blocks)
+int ext4_ext_calc_metadata_amount(struct inode *inode, sector_t lblock)
{
- int lcap, icap, rcap, leafs, idxs, num;
- int newextents = blocks;
-
- rcap = ext4_ext_space_root_idx(inode, 0);
- lcap = ext4_ext_space_block(inode, 0);
- icap = ext4_ext_space_block_idx(inode, 0);
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ int idxs, num = 0;
- /* number of new leaf blocks needed */
- num = leafs = (newextents + lcap - 1) / lcap;
+ idxs = ((inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header))
+ / sizeof(struct ext4_extent_idx));
/*
- * Worse case, we need separate index block(s)
- * to link all new leaf blocks
+ * If the new delayed allocation block is contiguous with the
+ * previous da block, it can share index blocks with the
+ * previous block, so we only need to allocate a new index
+ * block every idxs leaf blocks. At ldxs**2 blocks, we need
+ * an additional index block, and at ldxs**3 blocks, yet
+ * another index blocks.
*/
- idxs = (leafs + icap - 1) / icap;
- do {
- num += idxs;
- idxs = (idxs + icap - 1) / icap;
- } while (idxs > rcap);
+ if (ei->i_da_metadata_calc_len &&
+ ei->i_da_metadata_calc_last_lblock+1 == lblock) {
+ if ((ei->i_da_metadata_calc_len % idxs) == 0)
+ num++;
+ if ((ei->i_da_metadata_calc_len % (idxs*idxs)) == 0)
+ num++;
+ if ((ei->i_da_metadata_calc_len % (idxs*idxs*idxs)) == 0) {
+ num++;
+ ei->i_da_metadata_calc_len = 0;
+ } else
+ ei->i_da_metadata_calc_len++;
+ ei->i_da_metadata_calc_last_lblock++;
+ return num;
+ }
- return num;
+ /*
+ * In the worst case we need a new set of index blocks at
+ * every level of the inode's extent tree.
+ */
+ ei->i_da_metadata_calc_len = 1;
+ ei->i_da_metadata_calc_last_lblock = lblock;
+ return ext_depth(inode) + 1;
}
static int
@@ -3023,6 +3038,14 @@ out:
return err;
}
+static void unmap_underlying_metadata_blocks(struct block_device *bdev,
+ sector_t block, int count)
+{
+ int i;
+ for (i = 0; i < count; i++)
+ unmap_underlying_metadata(bdev, block + i);
+}
+
static int
ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
ext4_lblk_t iblock, unsigned int max_blocks,
@@ -3098,6 +3121,18 @@ out:
} else
allocated = ret;
set_buffer_new(bh_result);
+ /*
+ * if we allocated more blocks than requested
+ * we need to make sure we unmap the extra block
+ * allocated. The actual needed block will get
+ * unmapped later when we find the buffer_head marked
+ * new.
+ */
+ if (allocated > max_blocks) {
+ unmap_underlying_metadata_blocks(inode->i_sb->s_bdev,
+ newblock + max_blocks,
+ allocated - max_blocks);
+ }
map_out:
set_buffer_mapped(bh_result);
out1:
@@ -3190,7 +3225,13 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
* this situation is possible, though, _during_ tree modification;
* this is why assert can't be put in ext4_ext_find_extent()
*/
- BUG_ON(path[depth].p_ext == NULL && depth != 0);
+ if (path[depth].p_ext == NULL && depth != 0) {
+ ext4_error(inode->i_sb, __func__, "bad extent address "
+ "inode: %lu, iblock: %d, depth: %d",
+ inode->i_ino, iblock, depth);
+ err = -EIO;
+ goto out2;
+ }
eh = path[depth].p_hdr;
ex = path[depth].p_ext;
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 0b22497d92e..98bd140aad0 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -88,9 +88,21 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
return ext4_force_commit(inode->i_sb);
commit_tid = datasync ? ei->i_datasync_tid : ei->i_sync_tid;
- if (jbd2_log_start_commit(journal, commit_tid))
+ if (jbd2_log_start_commit(journal, commit_tid)) {
+ /*
+ * When the journal is on a different device than the
+ * fs data disk, we need to issue the barrier in
+ * writeback mode. (In ordered mode, the jbd2 layer
+ * will take care of issuing the barrier. In
+ * data=journal, all of the data blocks are written to
+ * the journal device.)
+ */
+ if (ext4_should_writeback_data(inode) &&
+ (journal->j_fs_dev != journal->j_dev) &&
+ (journal->j_flags & JBD2_BARRIER))
+ blkdev_issue_flush(inode->i_sb->s_bdev, NULL);
jbd2_log_wait_commit(journal, commit_tid);
- else if (journal->j_flags & JBD2_BARRIER)
+ } else if (journal->j_flags & JBD2_BARRIER)
blkdev_issue_flush(inode->i_sb->s_bdev, NULL);
return ret;
}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ab807963a61..c818972c830 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1009,77 +1009,88 @@ qsize_t *ext4_get_reserved_space(struct inode *inode)
return &EXT4_I(inode)->i_reserved_quota;
}
#endif
+
/*
* Calculate the number of metadata blocks need to reserve
- * to allocate @blocks for non extent file based file
+ * to allocate a new block at @lblocks for non extent file based file
*/
-static int ext4_indirect_calc_metadata_amount(struct inode *inode, int blocks)
+static int ext4_indirect_calc_metadata_amount(struct inode *inode,
+ sector_t lblock)
{
- int icap = EXT4_ADDR_PER_BLOCK(inode->i_sb);
- int ind_blks, dind_blks, tind_blks;
-
- /* number of new indirect blocks needed */
- ind_blks = (blocks + icap - 1) / icap;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ int dind_mask = EXT4_ADDR_PER_BLOCK(inode->i_sb) - 1;
+ int blk_bits;
- dind_blks = (ind_blks + icap - 1) / icap;
+ if (lblock < EXT4_NDIR_BLOCKS)
+ return 0;
- tind_blks = 1;
+ lblock -= EXT4_NDIR_BLOCKS;
- return ind_blks + dind_blks + tind_blks;
+ if (ei->i_da_metadata_calc_len &&
+ (lblock & dind_mask) == ei->i_da_metadata_calc_last_lblock) {
+ ei->i_da_metadata_calc_len++;
+ return 0;
+ }
+ ei->i_da_metadata_calc_last_lblock = lblock & dind_mask;
+ ei->i_da_metadata_calc_len = 1;
+ blk_bits = roundup_pow_of_two(lblock + 1);
+ return (blk_bits / EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb)) + 1;
}
/*
* Calculate the number of metadata blocks need to reserve
- * to allocate given number of blocks
+ * to allocate a block located at @lblock
*/
-static int ext4_calc_metadata_amount(struct inode *inode, int blocks)
+static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
{
- if (!blocks)
- return 0;
-
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
- return ext4_ext_calc_metadata_amount(inode, blocks);
+ return ext4_ext_calc_metadata_amount(inode, lblock);
- return ext4_indirect_calc_metadata_amount(inode, blocks);
+ return ext4_indirect_calc_metadata_amount(inode, lblock);
}
+/*
+ * Called with i_data_sem down, which is important since we can call
+ * ext4_discard_preallocations() from here.
+ */
static void ext4_da_update_reserve_space(struct inode *inode, int used)
{
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- int total, mdb, mdb_free, mdb_claim = 0;
-
- spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
- /* recalculate the number of metablocks still need to be reserved */
- total = EXT4_I(inode)->i_reserved_data_blocks - used;
- mdb = ext4_calc_metadata_amount(inode, total);
-
- /* figure out how many metablocks to release */
- BUG_ON(mdb > EXT4_I(inode)->i_reserved_meta_blocks);
- mdb_free = EXT4_I(inode)->i_reserved_meta_blocks - mdb;
-
- if (mdb_free) {
- /* Account for allocated meta_blocks */
- mdb_claim = EXT4_I(inode)->i_allocated_meta_blocks;
- BUG_ON(mdb_free < mdb_claim);
- mdb_free -= mdb_claim;
-
- /* update fs dirty blocks counter */
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ int mdb_free = 0;
+
+ spin_lock(&ei->i_block_reservation_lock);
+ if (unlikely(used > ei->i_reserved_data_blocks)) {
+ ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
+ "with only %d reserved data blocks\n",
+ __func__, inode->i_ino, used,
+ ei->i_reserved_data_blocks);
+ WARN_ON(1);
+ used = ei->i_reserved_data_blocks;
+ }
+
+ /* Update per-inode reservations */
+ ei->i_reserved_data_blocks -= used;
+ used += ei->i_allocated_meta_blocks;
+ ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;
+ ei->i_allocated_meta_blocks = 0;
+ percpu_counter_sub(&sbi->s_dirtyblocks_counter, used);
+
+ if (ei->i_reserved_data_blocks == 0) {
+ /*
+ * We can release all of the reserved metadata blocks
+ * only when we have written all of the delayed
+ * allocation blocks.
+ */
+ mdb_free = ei->i_reserved_meta_blocks;
+ ei->i_reserved_meta_blocks = 0;
+ ei->i_da_metadata_calc_len = 0;
percpu_counter_sub(&sbi->s_dirtyblocks_counter, mdb_free);
- EXT4_I(inode)->i_allocated_meta_blocks = 0;
- EXT4_I(inode)->i_reserved_meta_blocks = mdb;
}
-
- /* update per-inode reservations */
- BUG_ON(used > EXT4_I(inode)->i_reserved_data_blocks);
- EXT4_I(inode)->i_reserved_data_blocks -= used;
- percpu_counter_sub(&sbi->s_dirtyblocks_counter, used + mdb_claim);
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
- vfs_dq_claim_block(inode, used + mdb_claim);
-
- /*
- * free those over-booking quota for metadata blocks
- */
+ /* Update quota subsystem */
+ vfs_dq_claim_block(inode, used);
if (mdb_free)
vfs_dq_release_reservation_block(inode, mdb_free);
@@ -1088,7 +1099,8 @@ static void ext4_da_update_reserve_space(struct inode *inode, int used)
* there aren't any writers on the inode, we can discard the
* inode's preallocations.
*/
- if (!total && (atomic_read(&inode->i_writecount) == 0))
+ if ((ei->i_reserved_data_blocks == 0) &&
+ (atomic_read(&inode->i_writecount) == 0))
ext4_discard_preallocations(inode);
}
@@ -1797,11 +1809,15 @@ static int ext4_journalled_write_end(struct file *file,
return ret ? ret : copied;
}
-static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
+/*
+ * Reserve a single block located at lblock
+ */
+static int ext4_da_reserve_space(struct inode *inode, sector_t lblock)
{
int retries = 0;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- unsigned long md_needed, mdblocks, total = 0;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ unsigned long md_needed, md_reserved;
/*
* recalculate the amount of metadata blocks to reserve
@@ -1809,35 +1825,43 @@ static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
* worse case is one extent per block
*/
repeat:
- spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
- total = EXT4_I(inode)->i_reserved_data_blocks + nrblocks;
- mdblocks = ext4_calc_metadata_amount(inode, total);
- BUG_ON(mdblocks < EXT4_I(inode)->i_reserved_meta_blocks);
-
- md_needed = mdblocks - EXT4_I(inode)->i_reserved_meta_blocks;
- total = md_needed + nrblocks;
- spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
+ spin_lock(&ei->i_block_reservation_lock);
+ md_reserved = ei->i_reserved_meta_blocks;
+ md_needed = ext4_calc_metadata_amount(inode, lblock);
+ spin_unlock(&ei->i_block_reservation_lock);
/*
* Make quota reservation here to prevent quota overflow
* later. Real quota accounting is done at pages writeout
* time.
*/
- if (vfs_dq_reserve_block(inode, total))
+ if (vfs_dq_reserve_block(inode, md_needed + 1)) {
+ /*
+ * We tend to badly over-estimate the amount of
+ * metadata blocks which are needed, so if we have
+ * reserved any metadata blocks, try to force out the
+ * inode and see if we have any better luck.
+ */
+ if (md_reserved && retries++ <= 3)
+ goto retry;
return -EDQUOT;
+ }
- if (ext4_claim_free_blocks(sbi, total)) {
- vfs_dq_release_reservation_block(inode, total);
+ if (ext4_claim_free_blocks(sbi, md_needed + 1)) {
+ vfs_dq_release_reservation_block(inode, md_needed + 1);
if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
+ retry:
+ if (md_reserved)
+ write_inode_now(inode, (retries == 3));
yield();
goto repeat;
}
return -ENOSPC;
}
- spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
- EXT4_I(inode)->i_reserved_data_blocks += nrblocks;
- EXT4_I(inode)->i_reserved_meta_blocks += md_needed;
- spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
+ spin_lock(&ei->i_block_reservation_lock);
+ ei->i_reserved_data_blocks++;
+ ei->i_reserved_meta_blocks += md_needed;
+ spin_unlock(&ei->i_block_reservation_lock);
return 0; /* success */
}
@@ -1845,49 +1869,46 @@ repeat:
static void ext4_da_release_space(struct inode *inode, int to_free)
{
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- int total, mdb, mdb_free, release;
+ struct ext4_inode_info *ei = EXT4_I(inode);
if (!to_free)
return; /* Nothing to release, exit */
spin_lock(&EXT4_I(inode)->i_block_reservation_lock);
- if (!EXT4_I(inode)->i_reserved_data_blocks) {
+ if (unlikely(to_free > ei->i_reserved_data_blocks)) {
/*
- * if there is no reserved blocks, but we try to free some
- * then the counter is messed up somewhere.
- * but since this function is called from invalidate
- * page, it's harmless to return without any action
+ * if there aren't enough reserved blocks, then the
+ * counter is messed up somewhere. Since this
+ * function is called from invalidate page, it's
+ * harmless to return without any action.
*/
- printk(KERN_INFO "ext4 delalloc try to release %d reserved "
- "blocks for inode %lu, but there is no reserved "
- "data blocks\n", to_free, inode->i_ino);
- spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
- return;
+ ext4_msg(inode->i_sb, KERN_NOTICE, "ext4_da_release_space: "
+ "ino %lu, to_free %d with only %d reserved "
+ "data blocks\n", inode->i_ino, to_free,
+ ei->i_reserved_data_blocks);
+ WARN_ON(1);
+ to_free = ei->i_reserved_data_blocks;
}
+ ei->i_reserved_data_blocks -= to_free;
- /* recalculate the number of metablocks still need to be reserved */
- total = EXT4_I(inode)->i_reserved_data_blocks - to_free;
- mdb = ext4_calc_metadata_amount(inode, total);
-
- /* figure out how many metablocks to release */
- BUG_ON(mdb > EXT4_I(inode)->i_reserved_meta_blocks);
- mdb_free = EXT4_I(inode)->i_reserved_meta_blocks - mdb;
-
- release = to_free + mdb_free;
-
- /* update fs dirty blocks counter for truncate case */
- percpu_counter_sub(&sbi->s_dirtyblocks_counter, release);
+ if (ei->i_reserved_data_blocks == 0) {
+ /*
+ * We can release all of the reserved metadata blocks
+ * only when we have written all of the delayed
+ * allocation blocks.
+ */
+ to_free += ei->i_reserved_meta_blocks;
+ ei->i_reserved_meta_blocks = 0;
+ ei->i_da_metadata_calc_len = 0;
+ }
- /* update per-inode reservations */
- BUG_ON(to_free > EXT4_I(inode)->i_reserved_data_blocks);
- EXT4_I(inode)->i_reserved_data_blocks -= to_free;
+ /* update fs dirty blocks counter */
+ percpu_counter_sub(&sbi->s_dirtyblocks_counter, to_free);
- BUG_ON(mdb > EXT4_I(inode)->i_reserved_meta_blocks);
- EXT4_I(inode)->i_reserved_meta_blocks = mdb;
spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
- vfs_dq_release_reservation_block(inode, release);
+ vfs_dq_release_reservation_block(inode, to_free);
}
static void ext4_da_page_release_reservation(struct page *page,
@@ -2493,7 +2514,7 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
* XXX: __block_prepare_write() unmaps passed block,
* is it OK?
*/
- ret = ext4_da_reserve_space(inode, 1);
+ ret = ext4_da_reserve_space(inode, iblock);
if (ret)
/* not enough space to reserve */
return ret;
@@ -2967,8 +2988,7 @@ retry:
out_writepages:
if (!no_nrwrite_index_update)
wbc->no_nrwrite_index_update = 0;
- if (wbc->nr_to_write > nr_to_writebump)
- wbc->nr_to_write -= nr_to_writebump;
+ wbc->nr_to_write -= nr_to_writebump;
wbc->range_start = range_start;
trace_ext4_da_writepages_result(inode, wbc, ret, pages_written);
return ret;
@@ -2993,11 +3013,18 @@ static int ext4_nonda_switch(struct super_block *sb)
if (2 * free_blocks < 3 * dirty_blocks ||
free_blocks < (dirty_blocks + EXT4_FREEBLOCKS_WATERMARK)) {
/*
- * free block count is less that 150% of dirty blocks
- * or free blocks is less that watermark
+ * free block count is less than 150% of dirty blocks
+ * or free blocks is less than watermark
*/
return 1;
}
+ /*
+ * Even if we don't switch but are nearing capacity,
+ * start pushing delalloc when 1/2 of free blocks are dirty.
+ */
+ if (free_blocks < 2 * dirty_blocks)
+ writeback_inodes_sb_if_idle(sb);
+
return 0;
}
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 0ca811061bc..436521cae45 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -17,7 +17,6 @@
#include <linux/proc_fs.h>
#include <linux/pagemap.h>
#include <linux/seq_file.h>
-#include <linux/version.h>
#include <linux/blkdev.h>
#include <linux/mutex.h>
#include "ext4_jbd2.h"
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6ed9aa91f27..735c20d5fd5 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -702,6 +702,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
ei->i_reserved_data_blocks = 0;
ei->i_reserved_meta_blocks = 0;
ei->i_allocated_meta_blocks = 0;
+ ei->i_da_metadata_calc_len = 0;
ei->i_delalloc_reserved_flag = 0;
spin_lock_init(&(ei->i_block_reservation_lock));
#ifdef CONFIG_QUOTA
@@ -2174,9 +2175,9 @@ static ssize_t lifetime_write_kbytes_show(struct ext4_attr *a,
struct super_block *sb = sbi->s_buddy_cache->i_sb;
return snprintf(buf, PAGE_SIZE, "%llu\n",
- sbi->s_kbytes_written +
+ (unsigned long long)(sbi->s_kbytes_written +
((part_stat_read(sb->s_bdev->bd_part, sectors[1]) -
- EXT4_SB(sb)->s_sectors_written_start) >> 1));
+ EXT4_SB(sb)->s_sectors_written_start) >> 1)));
}
static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
@@ -4005,6 +4006,7 @@ static inline void unregister_as_ext2(void)
{
unregister_filesystem(&ext2_fs_type);
}
+MODULE_ALIAS("ext2");
#else
static inline void register_as_ext2(void) { }
static inline void unregister_as_ext2(void) { }
@@ -4031,6 +4033,7 @@ static inline void unregister_as_ext3(void)
{
unregister_filesystem(&ext3_fs_type);
}
+MODULE_ALIAS("ext3");
#else
static inline void register_as_ext3(void) { }
static inline void unregister_as_ext3(void) { }
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 83218bebbc7..f3a2f7ed45a 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1332,6 +1332,8 @@ retry:
goto cleanup;
kfree(b_entry_name);
kfree(buffer);
+ b_entry_name = NULL;
+ buffer = NULL;
brelse(is->iloc.bh);
kfree(is);
kfree(bs);
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 49bc1b8e8f1..1a7c42c64ff 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -242,6 +242,7 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
/**
* bdi_start_writeback - start writeback
* @bdi: the backing device to write from
+ * @sb: write inodes from this super_block
* @nr_pages: the number of pages to write
*
* Description:
@@ -1187,6 +1188,23 @@ void writeback_inodes_sb(struct super_block *sb)
EXPORT_SYMBOL(writeback_inodes_sb);
/**
+ * writeback_inodes_sb_if_idle - start writeback if none underway
+ * @sb: the superblock
+ *
+ * Invoke writeback_inodes_sb if no writeback is currently underway.
+ * Returns 1 if writeback was started, 0 if not.
+ */
+int writeback_inodes_sb_if_idle(struct super_block *sb)
+{
+ if (!writeback_in_progress(sb->s_bdi)) {
+ writeback_inodes_sb(sb);
+ return 1;
+ } else
+ return 0;
+}
+EXPORT_SYMBOL(writeback_inodes_sb_if_idle);
+
+/**
* sync_inodes_sb - sync sb inode pages
* @sb: the superblock
*
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index ca0f5eb62b2..88684937095 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -22,6 +22,7 @@
#include <linux/jbd2.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include <linux/blkdev.h>
#include <trace/events/jbd2.h>
/*
@@ -515,6 +516,20 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
journal->j_tail_sequence = first_tid;
journal->j_tail = blocknr;
spin_unlock(&journal->j_state_lock);
+
+ /*
+ * If there is an external journal, we need to make sure that
+ * any data blocks that were recently written out --- perhaps
+ * by jbd2_log_do_checkpoint() --- are flushed out before we
+ * drop the transactions from the external journal. It's
+ * unlikely this will be necessary, especially with a
+ * appropriately sized journal, but we need this to guarantee
+ * correctness. Fortunately jbd2_cleanup_journal_tail()
+ * doesn't get called all that often.
+ */
+ if ((journal->j_fs_dev != journal->j_dev) &&
+ (journal->j_flags & JBD2_BARRIER))
+ blkdev_issue_flush(journal->j_fs_dev, NULL);
if (!(journal->j_flags & JBD2_ABORT))
jbd2_journal_update_superblock(journal, 1);
return 0;
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 6a10238d2c6..1bc74b6f26d 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -259,6 +259,7 @@ static int journal_submit_data_buffers(journal_t *journal,
ret = err;
spin_lock(&journal->j_list_lock);
J_ASSERT(jinode->i_transaction == commit_transaction);
+ commit_transaction->t_flushed_data_blocks = 1;
jinode->i_flags &= ~JI_COMMIT_RUNNING;
wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING);
}
@@ -708,8 +709,17 @@ start_journal_io:
}
}
- /* Done it all: now write the commit record asynchronously. */
+ /*
+ * If the journal is not located on the file system device,
+ * then we must flush the file system device before we issue
+ * the commit record
+ */
+ if (commit_transaction->t_flushed_data_blocks &&
+ (journal->j_fs_dev != journal->j_dev) &&
+ (journal->j_flags & JBD2_BARRIER))
+ blkdev_issue_flush(journal->j_fs_dev, NULL);
+ /* Done it all: now write the commit record asynchronously. */
if (JBD2_HAS_INCOMPAT_FEATURE(journal,
JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)) {
err = journal_submit_commit_record(journal, commit_transaction,
@@ -720,13 +730,6 @@ start_journal_io:
blkdev_issue_flush(journal->j_dev, NULL);
}
- /*
- * This is the right place to wait for data buffers both for ASYNC
- * and !ASYNC commit. If commit is ASYNC, we need to wait only after
- * the commit block went to disk (which happens above). If commit is
- * SYNC, we need to wait for data buffers before we start writing
- * commit block, which happens below in such setting.
- */
err = journal_finish_inode_data_buffers(journal, commit_transaction);
if (err) {
printk(KERN_WARNING
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 17af879e6e9..ac0d027595d 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -814,7 +814,7 @@ static journal_t * journal_init_common (void)
journal_t *journal;
int err;
- journal = kzalloc(sizeof(*journal), GFP_KERNEL|__GFP_NOFAIL);
+ journal = kzalloc(sizeof(*journal), GFP_KERNEL);
if (!journal)
goto fail;
diff --git a/fs/namei.c b/fs/namei.c
index 68921d9b530..b55440baf7a 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -232,6 +232,7 @@ int generic_permission(struct inode *inode, int mask,
/*
* Searching includes executable on directories, else just read.
*/
+ mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
if (mask == MAY_READ || (S_ISDIR(inode->i_mode) && !(mask & MAY_WRITE)))
if (capable(CAP_DAC_READ_SEARCH))
return 0;
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index f4a14ea2ed9..effdbdbe6c1 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -417,8 +417,8 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
key = page_index(bh->b_page) << (PAGE_CACHE_SHIFT -
bmap->b_inode->i_blkbits);
- for (pbh = page_buffers(bh->b_page); pbh != bh;
- pbh = pbh->b_this_page, key++);
+ for (pbh = page_buffers(bh->b_page); pbh != bh; pbh = pbh->b_this_page)
+ key++;
return key;
}
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index d5ad54e204a..18737818db6 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -328,19 +328,24 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
tnicps += nicps;
nilfs_mdt_mark_buffer_dirty(cp_bh);
nilfs_mdt_mark_dirty(cpfile);
- if (!nilfs_cpfile_is_in_first(cpfile, cno) &&
- (count = nilfs_cpfile_block_sub_valid_checkpoints(
- cpfile, cp_bh, kaddr, nicps)) == 0) {
- /* make hole */
- kunmap_atomic(kaddr, KM_USER0);
- brelse(cp_bh);
- ret = nilfs_cpfile_delete_checkpoint_block(
- cpfile, cno);
- if (ret == 0)
- continue;
- printk(KERN_ERR "%s: cannot delete block\n",
- __func__);
- break;
+ if (!nilfs_cpfile_is_in_first(cpfile, cno)) {
+ count =
+ nilfs_cpfile_block_sub_valid_checkpoints(
+ cpfile, cp_bh, kaddr, nicps);
+ if (count == 0) {
+ /* make hole */
+ kunmap_atomic(kaddr, KM_USER0);
+ brelse(cp_bh);
+ ret =
+ nilfs_cpfile_delete_checkpoint_block(
+ cpfile, cno);
+ if (ret == 0)
+ continue;
+ printk(KERN_ERR
+ "%s: cannot delete block\n",
+ __func__);
+ break;
+ }
}
}
diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index d369ac71827..236753df5cd 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -51,11 +51,11 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
struct nilfs_direct *direct;
__u64 ptr;
- direct = (struct nilfs_direct *)bmap;
- if ((key > NILFS_DIRECT_KEY_MAX) ||
- (level != 1) || /* XXX: use macro for level 1 */
- ((ptr = nilfs_direct_get_ptr(direct, key)) ==
- NILFS_BMAP_INVALID_PTR))
+ direct = (struct nilfs_direct *)bmap; /* XXX: use macro for level 1 */
+ if (key > NILFS_DIRECT_KEY_MAX || level != 1)
+ return -ENOENT;
+ ptr = nilfs_direct_get_ptr(direct, key);
+ if (ptr == NILFS_BMAP_INVALID_PTR)
return -ENOENT;
if (ptrp != NULL)
@@ -73,9 +73,10 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
sector_t blocknr;
int ret, cnt;
- if (key > NILFS_DIRECT_KEY_MAX ||
- (ptr = nilfs_direct_get_ptr(direct, key)) ==
- NILFS_BMAP_INVALID_PTR)
+ if (key > NILFS_DIRECT_KEY_MAX)
+ return -ENOENT;
+ ptr = nilfs_direct_get_ptr(direct, key);
+ if (ptr == NILFS_BMAP_INVALID_PTR)
return -ENOENT;
if (NILFS_BMAP_USE_VBN(bmap)) {
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index f6af76042d8..d6b2b83de36 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -480,7 +480,7 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
unsigned int cmd, void __user *argp)
{
struct nilfs_argv argv[5];
- const static size_t argsz[5] = {
+ static const size_t argsz[5] = {
sizeof(struct nilfs_vdesc),
sizeof(struct nilfs_period),
sizeof(__u64),
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index 68549570718..65c87276117 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -1277,7 +1277,10 @@ int reiserfs_init_bitmap_cache(struct super_block *sb)
struct reiserfs_bitmap_info *bitmap;
unsigned int bmap_nr = reiserfs_bmap_count(sb);
+ /* Avoid lock recursion in fault case */
+ reiserfs_write_unlock(sb);
bitmap = vmalloc(sizeof(*bitmap) * bmap_nr);
+ reiserfs_write_lock(sb);
if (bitmap == NULL)
return -ENOMEM;
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 290ae38fca8..1150ebb2536 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -31,11 +31,12 @@ void reiserfs_delete_inode(struct inode *inode)
JOURNAL_PER_BALANCE_CNT * 2 +
2 * REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb);
struct reiserfs_transaction_handle th;
+ int depth;
int err;
truncate_inode_pages(&inode->i_data, 0);
- reiserfs_write_lock(inode->i_sb);
+ depth = reiserfs_write_lock_once(inode->i_sb);
/* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) { /* also handles bad_inode case */
@@ -74,7 +75,7 @@ void reiserfs_delete_inode(struct inode *inode)
out:
clear_inode(inode); /* note this must go after the journal_end to prevent deadlock */
inode->i_blocks = 0;
- reiserfs_write_unlock(inode->i_sb);
+ reiserfs_write_unlock_once(inode->i_sb, depth);
}
static void _make_cpu_key(struct cpu_key *key, int version, __u32 dirid,
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 2f8a7e7b8da..83ac4d3b3cb 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2009,10 +2009,11 @@ static int do_journal_release(struct reiserfs_transaction_handle *th,
destroy_workqueue(commit_wq);
commit_wq = NULL;
}
- reiserfs_write_lock(sb);
free_journal_ram(sb);
+ reiserfs_write_lock(sb);
+
return 0;
}
@@ -2758,11 +2759,18 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
struct reiserfs_journal *journal;
struct reiserfs_journal_list *jl;
char b[BDEVNAME_SIZE];
+ int ret;
+ /*
+ * Unlock here to avoid various RECLAIM-FS-ON <-> IN-RECLAIM-FS
+ * dependency inversion warnings.
+ */
+ reiserfs_write_unlock(sb);
journal = SB_JOURNAL(sb) = vmalloc(sizeof(struct reiserfs_journal));
if (!journal) {
reiserfs_warning(sb, "journal-1256",
"unable to get memory for journal structure");
+ reiserfs_write_lock(sb);
return 1;
}
memset(journal, 0, sizeof(struct reiserfs_journal));
@@ -2771,10 +2779,12 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
INIT_LIST_HEAD(&journal->j_working_list);
INIT_LIST_HEAD(&journal->j_journal_list);
journal->j_persistent_trans = 0;
- if (reiserfs_allocate_list_bitmaps(sb,
- journal->j_list_bitmap,
- reiserfs_bmap_count(sb)))
+ ret = reiserfs_allocate_list_bitmaps(sb, journal->j_list_bitmap,
+ reiserfs_bmap_count(sb));
+ reiserfs_write_lock(sb);
+ if (ret)
goto free_and_return;
+
allocate_bitmap_nodes(sb);
/* reserved for journal area support */
diff --git a/fs/reiserfs/lock.c b/fs/reiserfs/lock.c
index ee2cfc0fd8a..b87aa2c1afc 100644
--- a/fs/reiserfs/lock.c
+++ b/fs/reiserfs/lock.c
@@ -86,3 +86,12 @@ void reiserfs_check_lock_depth(struct super_block *sb, char *caller)
reiserfs_panic(sb, "%s called without kernel lock held %d",
caller);
}
+
+#ifdef CONFIG_REISERFS_CHECK
+void reiserfs_lock_check_recursive(struct super_block *sb)
+{
+ struct reiserfs_sb_info *sb_i = REISERFS_SB(sb);
+
+ WARN_ONCE((sb_i->lock_depth > 0), "Unwanted recursive reiserfs lock!\n");
+}
+#endif
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index e296ff72a6c..9d4dcf0b07c 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -921,6 +921,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
struct reiserfs_transaction_handle th;
int jbegin_count;
unsigned long savelink;
+ int depth;
inode = dentry->d_inode;
@@ -932,7 +933,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
JOURNAL_PER_BALANCE_CNT * 2 + 2 +
4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
- reiserfs_write_lock(dir->i_sb);
+ depth = reiserfs_write_lock_once(dir->i_sb);
retval = journal_begin(&th, dir->i_sb, jbegin_count);
if (retval)
goto out_unlink;
@@ -993,7 +994,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
retval = journal_end(&th, dir->i_sb, jbegin_count);
reiserfs_check_path(&path);
- reiserfs_write_unlock(dir->i_sb);
+ reiserfs_write_unlock_once(dir->i_sb, depth);
return retval;
end_unlink:
@@ -1003,7 +1004,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
if (err)
retval = err;
out_unlink:
- reiserfs_write_unlock(dir->i_sb);
+ reiserfs_write_unlock_once(dir->i_sb, depth);
return retval;
}
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 8c7033a8b67..c3b004ee627 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -83,7 +83,8 @@ static int xattr_unlink(struct inode *dir, struct dentry *dentry)
BUG_ON(!mutex_is_locked(&dir->i_mutex));
vfs_dq_init(dir);
- mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+ reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+ I_MUTEX_CHILD, dir->i_sb);
error = dir->i_op->unlink(dir, dentry);
mutex_unlock(&dentry->d_inode->i_mutex);
@@ -98,7 +99,8 @@ static int xattr_rmdir(struct inode *dir, struct dentry *dentry)
BUG_ON(!mutex_is_locked(&dir->i_mutex));
vfs_dq_init(dir);
- mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+ reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+ I_MUTEX_CHILD, dir->i_sb);
dentry_unhash(dentry);
error = dir->i_op->rmdir(dir, dentry);
if (!error)
@@ -235,16 +237,22 @@ static int reiserfs_for_each_xattr(struct inode *inode,
if (IS_PRIVATE(inode) || get_inode_sd_version(inode) == STAT_DATA_V1)
return 0;
+ reiserfs_write_unlock(inode->i_sb);
dir = open_xa_dir(inode, XATTR_REPLACE);
if (IS_ERR(dir)) {
err = PTR_ERR(dir);
+ reiserfs_write_lock(inode->i_sb);
goto out;
} else if (!dir->d_inode) {
err = 0;
+ reiserfs_write_lock(inode->i_sb);
goto out_dir;
}
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_XATTR);
+
+ reiserfs_write_lock(inode->i_sb);
+
buf.xadir = dir;
err = reiserfs_readdir_dentry(dir, &buf, fill_with_dentries, &pos);
while ((err == 0 || err == -ENOSPC) && buf.count) {
@@ -283,8 +291,9 @@ static int reiserfs_for_each_xattr(struct inode *inode,
err = journal_begin(&th, inode->i_sb, blocks);
if (!err) {
int jerror;
- mutex_lock_nested(&dir->d_parent->d_inode->i_mutex,
- I_MUTEX_XATTR);
+ reiserfs_mutex_lock_nested_safe(
+ &dir->d_parent->d_inode->i_mutex,
+ I_MUTEX_XATTR, inode->i_sb);
err = action(dir, data);
jerror = journal_end(&th, inode->i_sb, blocks);
mutex_unlock(&dir->d_parent->d_inode->i_mutex);
@@ -480,11 +489,16 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
if (!buffer)
return lookup_and_delete_xattr(inode, name);
+ reiserfs_write_unlock(inode->i_sb);
dentry = xattr_lookup(inode, name, flags);
- if (IS_ERR(dentry))
+ if (IS_ERR(dentry)) {
+ reiserfs_write_lock(inode->i_sb);
return PTR_ERR(dentry);
+ }
- down_write(&REISERFS_I(inode)->i_xattr_sem);
+ down_read(&REISERFS_I(inode)->i_xattr_sem);
+
+ reiserfs_write_lock(inode->i_sb);
xahash = xattr_hash(buffer, buffer_size);
while (buffer_pos < buffer_size || buffer_pos == 0) {
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index f05f2303a8b..699f371b9f1 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -106,8 +106,10 @@ static struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd)
return NULL;
t = atomic_cmpxchg(&sd->s_active, v, v + 1);
- if (likely(t == v))
+ if (likely(t == v)) {
+ rwsem_acquire_read(&sd->dep_map, 0, 1, _RET_IP_);
return sd;
+ }
if (t < 0)
return NULL;
@@ -130,6 +132,7 @@ static void sysfs_put_active(struct sysfs_dirent *sd)
if (unlikely(!sd))
return;
+ rwsem_release(&sd->dep_map, 1, _RET_IP_);
v = atomic_dec_return(&sd->s_active);
if (likely(v != SD_DEACTIVATED_BIAS))
return;
@@ -194,15 +197,21 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
BUG_ON(sd->s_sibling || !(sd->s_flags & SYSFS_FLAG_REMOVED));
sd->s_sibling = (void *)&wait;
+ rwsem_acquire(&sd->dep_map, 0, 0, _RET_IP_);
/* atomic_add_return() is a mb(), put_active() will always see
* the updated sd->s_sibling.
*/
v = atomic_add_return(SD_DEACTIVATED_BIAS, &sd->s_active);
- if (v != SD_DEACTIVATED_BIAS)
+ if (v != SD_DEACTIVATED_BIAS) {
+ lock_contended(&sd->dep_map, _RET_IP_);
wait_for_completion(&wait);
+ }
sd->s_sibling = NULL;
+
+ lock_acquired(&sd->dep_map, _RET_IP_);
+ rwsem_release(&sd->dep_map, 1, _RET_IP_);
}
static int sysfs_alloc_ino(ino_t *pino)
@@ -345,6 +354,7 @@ struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type)
atomic_set(&sd->s_count, 1);
atomic_set(&sd->s_active, 0);
+ sysfs_dirent_init_lockdep(sd);
sd->s_name = name;
sd->s_mode = mode;
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index ca52e7b9d8f..cdd9377a6e0 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -8,6 +8,7 @@
* This file is released under the GPLv2.
*/
+#include <linux/lockdep.h>
#include <linux/fs.h>
struct sysfs_open_dirent;
@@ -50,6 +51,9 @@ struct sysfs_inode_attrs {
struct sysfs_dirent {
atomic_t s_count;
atomic_t s_active;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+ struct lockdep_map dep_map;
+#endif
struct sysfs_dirent *s_parent;
struct sysfs_dirent *s_sibling;
const char *s_name;
@@ -84,6 +88,17 @@ static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
return sd->s_flags & SYSFS_TYPE_MASK;
}
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define sysfs_dirent_init_lockdep(sd) \
+do { \
+ static struct lock_class_key __key; \
+ \
+ lockdep_init_map(&sd->dep_map, "s_active", &__key, 0); \
+} while(0)
+#else
+#define sysfs_dirent_init_lockdep(sd) do {} while(0)
+#endif
+
/*
* Context structure to be used while adding/removing nodes.
*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 22:36:34 +0000