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| author | Qu Wenruo <wqu@suse.com> | 2020-06-10 09:04:42 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-07-27 12:55:24 +0200 |
| commit | a7f8b1c2ac21bf081b41264c9cfd6260dffa6246 (patch) | |
| tree | 19cf7daae27083969919c8d7820d5a52e13b1fdc /fs/btrfs/file.c | |
| parent | 9729f10a608f235779f060636f32c87766ec615d (diff) | |
| download | linux-a7f8b1c2ac21bf081b41264c9cfd6260dffa6246.tar.gz | |
btrfs: file: reserve qgroup space after the hole punch range is locked
The incoming qgroup reserved space timing will move the data reservation to ordered extent completely. However in btrfs_punch_hole_lock_range() will call btrfs_invalidate_page(), which will clear QGROUP_RESERVED bit for the range. In current stage it's OK, but if we're making ordered extents handle the reserved space, then btrfs_punch_hole_lock_range() can clear the QGROUP_RESERVED bit before we submit ordered extent, leading to qgroup reserved space leakage. So here change the timing to make reserve data space after btrfs_punch_hole_lock_range(). The new timing is fine for either current code or the new code. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/file.c')
| -rw-r--r-- | fs/btrfs/file.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 52422e2b3344..b15858e1d753 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -3174,14 +3174,14 @@ reserve_space: if (ret < 0) goto out; space_reserved = true; - ret = btrfs_qgroup_reserve_data(inode, &data_reserved, - alloc_start, bytes_to_reserve); - if (ret) - goto out; ret = btrfs_punch_hole_lock_range(inode, lockstart, lockend, &cached_state); if (ret) goto out; + ret = btrfs_qgroup_reserve_data(inode, &data_reserved, + alloc_start, bytes_to_reserve); + if (ret) + goto out; ret = btrfs_prealloc_file_range(inode, mode, alloc_start, alloc_end - alloc_start, i_blocksize(inode), |