If freesp == 0, we could end up in an infinite loop while squashing
the preallocation. Break the loop when we've killed the prealloc
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Mark caught this while reviewing the quota throttling patchset. I figured
it better that my set depend on this rather than vice versa, so I'll plan on a
v5 for at least a rebase, but I'll wait a bit for further comments on v4.
fs/xfs/xfs_iomap.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 912d83d..b0b0f44 100644
@@ -413,7 +413,7 @@ xfs_iomap_prealloc_size(
* have a large file on a small filesystem and the above
* lowspace thresholds are smaller than MAXEXTLEN.
- while (alloc_blocks >= freesp)
+ while (alloc_blocks && alloc_blocks >= freesp)
alloc_blocks >>= 4;