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btrfs: remove stale comment from btrfs_free_extent()

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A comment at btrfs_free_extent() mentions the call to btrfs_pin_extent()
unlocks the pinned mutex, however that mutex is long gone, it was removed
in 2009 by commit 04018de5d4 ("Btrfs: kill the pinned_mutex"). So just
delete the comment.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Filipe Manana 2023-09-15 16:02:56 +01:00 committed by David Sterba
parent 87463f7e02
commit df423ee23b
1 changed files with 0 additions and 1 deletions
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fs/btrfs/extent-tree.c
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@ -3375,7 +3375,6 @@ int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref)
ref->tree_ref.owning_root == BTRFS_TREE_LOG_OBJECTID) ||
(ref->type == BTRFS_REF_DATA &&
ref->data_ref.owning_root == BTRFS_TREE_LOG_OBJECTID)) {
/* unlocks the pinned mutex */
btrfs_pin_extent(trans, ref->bytenr, ref->len, 1);
ret = 0;
} else if (ref->type == BTRFS_REF_METADATA) {