diff options
| author | Chris Mason <clm@fb.com> | 2023-06-09 10:53:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-21 16:00:55 +0200 |
| commit | 9e1c7968a27512168951b7cebd14d814f98747d9 (patch) | |
| tree | b2d38b8f367e7aa11642c0cf19bbecf090b66624 /fs | |
| parent | 4e9da0cda14906f91f564f74ef9b8f6be49a2e99 (diff) | |
| download | linux-9e1c7968a27512168951b7cebd14d814f98747d9.tar.gz | |
btrfs: can_nocow_file_extent should pass down args->strict from callers
commit deccae40e4b30f98837e44225194d80c8baf2233 upstream.
Commit 619104ba453ad0 ("btrfs: move common NOCOW checks against a file
extent into a helper") changed our call to btrfs_cross_ref_exist() to
always pass false for the 'strict' parameter. We're passing this down
through the stack so that we can do a full check for cross references
during swapfile activation.
With strict always false, this test fails:
btrfs subvol create swappy
chattr +C swappy
fallocate -l1G swappy/swapfile
chmod 600 swappy/swapfile
mkswap swappy/swapfile
btrfs subvol snap swappy swapsnap
btrfs subvol del -C swapsnap
btrfs fi sync /
sync;sync;sync
swapon swappy/swapfile
The fix is to just use args->strict, and everyone except swapfile
activation is passing false.
Fixes: 619104ba453ad0 ("btrfs: move common NOCOW checks against a file extent into a helper")
CC: stable@vger.kernel.org # 6.1+
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 8cf1097439a0..c5583fc2a585 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1849,7 +1849,7 @@ static int can_nocow_file_extent(struct btrfs_path *path, ret = btrfs_cross_ref_exist(root, btrfs_ino(inode), key->offset - args->extent_offset, - args->disk_bytenr, false, path); + args->disk_bytenr, args->strict, path); WARN_ON_ONCE(ret > 0 && is_freespace_inode); if (ret != 0) goto out; |