diff options
| author | Darrick J. Wong <djwong@kernel.org> | 2022-07-14 11:06:15 -0700 |
|---|---|---|
| committer | Darrick J. Wong <djwong@kernel.org> | 2022-10-14 14:16:41 -0700 |
| commit | d238a4dcc17fb06fa121eb7f1531bf3eac45754e (patch) | |
| tree | 24e930542bab2aa5c2c71e9abffda89d9ad37143 | |
| parent | 83f145bcf48d90cfefdc42132fad272b8bca0d93 (diff) | |
xfs: speed up xfs_iwalk_adjust_start a little bit
Replace the open-coded loop that recomputes freecount with a single call
to a bit weight function.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
| -rw-r--r-- | fs/xfs/xfs_iwalk.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/fs/xfs/xfs_iwalk.c b/fs/xfs/xfs_iwalk.c index 7558486f4937..7959a8b89781 100644 --- a/fs/xfs/xfs_iwalk.c +++ b/fs/xfs/xfs_iwalk.c @@ -22,6 +22,7 @@ #include "xfs_trans.h" #include "xfs_pwork.h" #include "xfs_ag.h" +#include "xfs_bit.h" /* * Walking Inodes in the Filesystem @@ -131,21 +132,11 @@ xfs_iwalk_adjust_start( struct xfs_inobt_rec_incore *irec) /* btree record */ { int idx; /* index into inode chunk */ - int i; idx = agino - irec->ir_startino; - /* - * We got a right chunk with some left inodes allocated at it. Grab - * the chunk record. Mark all the uninteresting inodes free because - * they're before our start point. - */ - for (i = 0; i < idx; i++) { - if (XFS_INOBT_MASK(i) & ~irec->ir_free) - irec->ir_freecount++; - } - irec->ir_free |= xfs_inobt_maskn(0, idx); + irec->ir_freecount = hweight64(irec->ir_free); } /* Allocate memory for a walk. */ |