From: Dave Chinner <dchinner@xxxxxxxxxx>
If we don't find an AG with sufficient contiguous free space for a
maxlen allocation, make sure we select the AG with the largest
contiguous free space to allocate from.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_bmap.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index e64ba7e2d13d..ee1c1415c67a 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -3233,6 +3233,8 @@ xfs_bmap_btalloc_select_lengths(
struct xfs_mount *mp = args->mp;
struct xfs_perag *pag;
xfs_agnumber_t agno, startag;
+ xfs_agnumber_t max_blen_agno;
+ xfs_extlen_t max_blen = 0;
int error = 0;
if (ap->tp->t_flags & XFS_TRANS_LOWMODE) {
@@ -3264,10 +3266,22 @@ xfs_bmap_btalloc_select_lengths(
}
break;
}
+ if (*blen > max_blen) {
+ max_blen = *blen;
+ max_blen_agno = agno;
+ }
}
if (pag)
xfs_perag_rele(pag);
+ if (max_blen > *blen) {
+ if (max_blen_agno != startag) {
+ ap->blkno = XFS_AGB_TO_FSB(mp, max_blen_agno, 0);
+ ap->aeof = false;
+ }
+ *blen = max_blen;
+ }
+
args->minlen = xfs_bmap_select_minlen(ap, args, *blen);
return error;
}
--
2.40.1
