| From 553cceb49681d60975d00892877d4c871bf220f9 Mon Sep 17 00:00:00 2001 |
| From: Josef Bacik <jbacik@fb.com> |
| Date: Fri, 28 Sep 2018 07:18:00 -0400 |
| Subject: btrfs: reset max_extent_size on clear in a bitmap |
| |
| From: Josef Bacik <jbacik@fb.com> |
| |
| commit 553cceb49681d60975d00892877d4c871bf220f9 upstream. |
| |
| 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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| fs/btrfs/free-space-cache.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| --- a/fs/btrfs/free-space-cache.c |
| +++ b/fs/btrfs/free-space-cache.c |
| @@ -1693,6 +1693,8 @@ static inline void __bitmap_clear_bits(s |
| 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, |
