diff options
| -rw-r--r-- | fs/gfs2/inode.c | 4 | ||||
| -rw-r--r-- | fs/gfs2/inode.h | 6 | ||||
| -rw-r--r-- | fs/gfs2/ops_address.c | 78 | ||||
| -rw-r--r-- | fs/gfs2/ops_address.h | 2 | ||||
| -rw-r--r-- | fs/gfs2/ops_file.c | 13 |
5 files changed, 72 insertions, 31 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index af493fc6c8c..532784eb5ba 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -136,7 +136,6 @@ void gfs2_set_iop(struct inode *inode) if (S_ISREG(mode)) { inode->i_op = &gfs2_file_iops; inode->i_fop = &gfs2_file_fops; - inode->i_mapping->a_ops = &gfs2_file_aops; } else if (S_ISDIR(mode)) { inode->i_op = &gfs2_dir_iops; inode->i_fop = &gfs2_dir_fops; @@ -290,6 +289,9 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) di->di_entries = be32_to_cpu(str->di_entries); di->di_eattr = be64_to_cpu(str->di_eattr); + if (S_ISREG(ip->i_inode.i_mode)) + gfs2_set_aops(&ip->i_inode); + return 0; } diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h index bed3dc212a1..d4465066261 100644 --- a/fs/gfs2/inode.h +++ b/fs/gfs2/inode.h @@ -26,6 +26,12 @@ static inline int gfs2_is_writeback(const struct gfs2_inode *ip) return (sdp->sd_args.ar_data == GFS2_DATA_WRITEBACK) && !gfs2_is_jdata(ip); } +static inline int gfs2_is_ordered(const struct gfs2_inode *ip) +{ + const struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); + return (sdp->sd_args.ar_data == GFS2_DATA_ORDERED) && !gfs2_is_jdata(ip); +} + static inline int gfs2_is_dir(const struct gfs2_inode *ip) { return S_ISDIR(ip->i_inode.i_mode); diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c index ed154af8617..207014f363d 100644 --- a/fs/gfs2/ops_address.c +++ b/fs/gfs2/ops_address.c @@ -162,28 +162,18 @@ out_ignore: } /** - * gfs2_writepages - Write a bunch of dirty pages back to disk + * gfs2_writeback_writepages - Write a bunch of dirty pages back to disk * @mapping: The mapping to write * @wbc: Write-back control * - * For journaled files and/or ordered writes this just falls back to the - * kernel's default writepages path for now. We will probably want to change - * that eventually (i.e. when we look at allocate on flush). - * - * For the data=writeback case though we can already ignore buffer heads + * For the data=writeback case we can already ignore buffer heads * and write whole extents at once. This is a big reduction in the * number of I/O requests we send and the bmap calls we make in this case. */ -static int gfs2_writepages(struct address_space *mapping, - struct writeback_control *wbc) +static int gfs2_writeback_writepages(struct address_space *mapping, + struct writeback_control *wbc) { - struct inode *inode = mapping->host; - struct gfs2_inode *ip = GFS2_I(inode); - - if (gfs2_is_writeback(ip)) - return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); - - return generic_writepages(mapping, wbc); + return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); } /** @@ -644,11 +634,7 @@ failed: static int gfs2_set_page_dirty(struct page *page) { - struct gfs2_inode *ip = GFS2_I(page->mapping->host); - struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host); - - if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED || gfs2_is_jdata(ip)) - SetPageChecked(page); + SetPageChecked(page); return __set_page_dirty_buffers(page); } @@ -738,13 +724,9 @@ static int gfs2_ok_for_dio(struct gfs2_inode *ip, int rw, loff_t offset) { /* * Should we return an error here? I can't see that O_DIRECT for - * a journaled file makes any sense. For now we'll silently fall - * back to buffered I/O, likewise we do the same for stuffed - * files since they are (a) small and (b) unaligned. + * a stuffed file makes any sense. For now we'll silently fall + * back to buffered I/O */ - if (gfs2_is_jdata(ip)) - return 0; - if (gfs2_is_stuffed(ip)) return 0; @@ -855,9 +837,22 @@ cannot_release: return 0; } -const struct address_space_operations gfs2_file_aops = { +static const struct address_space_operations gfs2_writeback_aops = { + .writepage = gfs2_writepage, + .writepages = gfs2_writeback_writepages, + .readpage = gfs2_readpage, + .readpages = gfs2_readpages, + .sync_page = block_sync_page, + .write_begin = gfs2_write_begin, + .write_end = gfs2_write_end, + .bmap = gfs2_bmap, + .invalidatepage = gfs2_invalidatepage, + .releasepage = gfs2_releasepage, + .direct_IO = gfs2_direct_IO, +}; + +static const struct address_space_operations gfs2_ordered_aops = { .writepage = gfs2_writepage, - .writepages = gfs2_writepages, .readpage = gfs2_readpage, .readpages = gfs2_readpages, .sync_page = block_sync_page, @@ -870,3 +865,30 @@ const struct address_space_operations gfs2_file_aops = { .direct_IO = gfs2_direct_IO, }; +static const struct address_space_operations gfs2_jdata_aops = { + .writepage = gfs2_writepage, + .readpage = gfs2_readpage, + .readpages = gfs2_readpages, + .sync_page = block_sync_page, + .write_begin = gfs2_write_begin, + .write_end = gfs2_write_end, + .set_page_dirty = gfs2_set_page_dirty, + .bmap = gfs2_bmap, + .invalidatepage = gfs2_invalidatepage, + .releasepage = gfs2_releasepage, +}; + +void gfs2_set_aops(struct inode *inode) +{ + struct gfs2_inode *ip = GFS2_I(inode); + + if (gfs2_is_writeback(ip)) + inode->i_mapping->a_ops = &gfs2_writeback_aops; + else if (gfs2_is_ordered(ip)) + inode->i_mapping->a_ops = &gfs2_ordered_aops; + else if (gfs2_is_jdata(ip)) + inode->i_mapping->a_ops = &gfs2_jdata_aops; + else + BUG(); +} + diff --git a/fs/gfs2/ops_address.h b/fs/gfs2/ops_address.h index e8fe83fcd58..d3b76d0cdc8 100644 --- a/fs/gfs2/ops_address.h +++ b/fs/gfs2/ops_address.h @@ -14,12 +14,12 @@ #include <linux/buffer_head.h> #include <linux/mm.h> -extern const struct address_space_operations gfs2_file_aops; extern int gfs2_get_block(struct inode *inode, sector_t lblock, struct buffer_head *bh_result, int create); extern int gfs2_releasepage(struct page *page, gfp_t gfp_mask); extern int gfs2_internal_read(struct gfs2_inode *ip, struct file_ra_state *ra_state, char *buf, loff_t *pos, unsigned size); +extern void gfs2_set_aops(struct inode *inode); #endif /* __OPS_ADDRESS_DOT_H__ */ diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c index 6f3aeb059c6..ad5daaa6bab 100644 --- a/fs/gfs2/ops_file.c +++ b/fs/gfs2/ops_file.c @@ -38,6 +38,7 @@ #include "trans.h" #include "util.h" #include "eaops.h" +#include "ops_address.h" /** * gfs2_llseek - seek to a location in a file @@ -245,7 +246,16 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) if (error) goto out; } - + if ((flags ^ new_flags) & GFS2_DIF_JDATA) { + if (flags & GFS2_DIF_JDATA) + gfs2_log_flush(sdp, ip->i_gl); + error = filemap_fdatawrite(inode->i_mapping); + if (error) + goto out; + error = filemap_fdatawait(inode->i_mapping); + if (error) + goto out; + } error = gfs2_trans_begin(sdp, RES_DINODE, 0); if (error) goto out; @@ -257,6 +267,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) gfs2_dinode_out(ip, bh->b_data); brelse(bh); gfs2_set_inode_flags(inode); + gfs2_set_aops(inode); out_trans_end: gfs2_trans_end(sdp); out: |