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xfs: mark dquot buffers in cache

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dquot buffers always have write IO callbacks, so by marking them
directly we can avoid needing to attach ->b_iodone functions to
them. This avoids an indirect call, and makes future modifications
much simpler.

This is largely a rearrangement of the code at this point - no IO
completion functionality changes at this point, just how the
code is run is modified.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Dave Chinner
2020-06-29 14:48:46 -07:00
committed by Darrick J. Wong
parent f593bf144c
commit 0c7e5afbea
6 changed files with 20 additions and 0 deletions
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2
fs/xfs/xfs_buf.h
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@@ -32,6 +32,7 @@
/* buffer type flags for write callbacks */
#define _XBF_INODES (1 << 16)/* inode buffer */
#define _XBF_DQUOTS (1 << 17)/* dquot buffer */
/* flags used only internally */
#define _XBF_PAGES (1 << 20)/* backed by refcounted pages */
@@ -54,6 +55,7 @@ typedef unsigned int xfs_buf_flags_t;
{ XBF_STALE, "STALE" }, \
{ XBF_WRITE_FAIL, "WRITE_FAIL" }, \
{ _XBF_INODES, "INODES" }, \
{ _XBF_DQUOTS, "DQUOTS" }, \
{ _XBF_PAGES, "PAGES" }, \
{ _XBF_KMEM, "KMEM" }, \
{ _XBF_DELWRI_Q, "DELWRI_Q" }, \