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btrfs: reset max_extent_size on clear in a bitmap

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We need to clear the max_extent_size when we clear bits from a bitmap
since it could have been from the range that contains the
max_extent_size.

CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Liu Bo <bo.liu@linux.alibaba.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2018-09-28 07:18:00 -04:00 committed by David Sterba
parent 84de76a2fb
commit 553cceb496
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/free-space-cache.c
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@ -1687,6 +1687,8 @@ static inline void __bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,
bitmap_clear(info->bitmap, start, count);
info->bytes -= bytes;
if (info->max_extent_size > ctl->unit)
info->max_extent_size = 0;
}
static void bitmap_clear_bits(struct btrfs_free_space_ctl *ctl,