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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-04-06 19:01:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-07 08:31:15 -0700
commitf30bf3e40f80ef50c17f55271deae3abc03e793e (patch)
tree2e6d69611d1443688c1a79c5e5aed60cf38672e7 /fs/nilfs2/segment.h
parent9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 (diff)
downloadop-kernel-dev-f30bf3e40f80ef50c17f55271deae3abc03e793e.zip
op-kernel-dev-f30bf3e40f80ef50c17f55271deae3abc03e793e.tar.gz
nilfs2: fix missed-sync issue for do_sync_mapping_range()
Chris Mason pointed out that there is a missed sync issue in nilfs_writepages(): On Wed, 17 Dec 2008 21:52:55 -0500, Chris Mason wrote: > It looks like nilfs_writepage ignores WB_SYNC_NONE, which is used by > do_sync_mapping_range(). where WB_SYNC_NONE in do_sync_mapping_range() was replaced with WB_SYNC_ALL by Nick's patch (commit: ee53a891f47444c53318b98dac947ede963db400). This fixes the problem by letting nilfs_writepages() write out the log of file data within the range if sync_mode is WB_SYNC_ALL. This involves removal of nilfs_file_aio_write() which was previously needed to ensure O_SYNC sync writes. Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/segment.h')
-rw-r--r--fs/nilfs2/segment.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index 615654b..2dd39da 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -93,6 +93,9 @@ struct nilfs_segsum_pointer {
* @sc_active_segments: List of active segments that were already written out
* @sc_cleaning_segments: List of segments to be freed through construction
* @sc_copied_buffers: List of copied buffers (buffer heads) to freeze data
+ * @sc_dsync_inode: inode whose data pages are written for a sync operation
+ * @sc_dsync_start: start byte offset of data pages
+ * @sc_dsync_end: end byte offset of data pages (inclusive)
* @sc_segbufs: List of segment buffers
* @sc_segbuf_nblocks: Number of available blocks in segment buffers.
* @sc_curseg: Current segment buffer
@@ -134,6 +137,10 @@ struct nilfs_sc_info {
struct list_head sc_cleaning_segments;
struct list_head sc_copied_buffers;
+ struct nilfs_inode_info *sc_dsync_inode;
+ loff_t sc_dsync_start;
+ loff_t sc_dsync_end;
+
/* Segment buffers */
struct list_head sc_segbufs;
unsigned long sc_segbuf_nblocks;
@@ -221,8 +228,8 @@ extern void nilfs_destroy_transaction_cache(void);
extern void nilfs_relax_pressure_in_lock(struct super_block *);
extern int nilfs_construct_segment(struct super_block *);
-extern int nilfs_construct_dsync_segment(struct super_block *,
- struct inode *);
+extern int nilfs_construct_dsync_segment(struct super_block *, struct inode *,
+ loff_t, loff_t);
extern void nilfs_flush_segment(struct super_block *, ino_t);
extern int nilfs_clean_segments(struct super_block *, void __user *);
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