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ocfs2: Make cached block reads the common case.

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ocfs2_read_blocks() currently requires the CACHED flag for cached I/O.
However, that's the common case.  Let's flip it around and provide an
IGNORE_CACHE flag for the special users.  This has the added benefit of
cleaning up the code some (ignore_cache takes on its special meaning
earlier in the loop).

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
This commit is contained in:
Joel Becker
2008-10-09 17:20:34 -07:00
committed by Mark Fasheh
parent 5e0b3dec01
commit d4a8c93c82
7 changed files with 24 additions and 17 deletions
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4
fs/ocfs2/buffer_head_io.h
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@@ -49,7 +49,7 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
struct buffer_head *bh);
#define OCFS2_BH_CACHED 1
#define OCFS2_BH_IGNORE_CACHE 1
#define OCFS2_BH_READAHEAD 8
static inline int ocfs2_read_block(struct inode *inode, u64 off,
@@ -63,7 +63,7 @@ static inline int ocfs2_read_block(struct inode *inode, u64 off,
goto bail;
}
status = ocfs2_read_blocks(inode, off, 1, bh, OCFS2_BH_CACHED);
status = ocfs2_read_blocks(inode, off, 1, bh, 0);
bail:
return status;