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authorFilipe Manana <fdmanana@suse.com>2025-07-11 09:23:09 +0100
committerDavid Sterba <dsterba@suse.com>2025-07-22 00:09:22 +0200
commit279b4db10e46a31c7cd8161c1a5d7dc4c423b028 (patch)
tree8903b298215e3703baa7e0f6b14bdd99336cc727
parentbtrfs: set EXTENT_NORESERVE before range unlock in btrfs_truncate_block() (diff)
downloadwireguard-linux-279b4db10e46a31c7cd8161c1a5d7dc4c423b028.tar.xz
wireguard-linux-279b4db10e46a31c7cd8161c1a5d7dc4c423b028.zip
btrfs: use cached state when falling back from NOCoW write to CoW write
We have a cached extent state record from the previous extent locking so we can use when setting the EXTENT_NORESERVE in the range, allowing the operation to be faster if the extent io tree is relatively large. Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r--fs/btrfs/inode.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6aa1e66448fa..6781956197c7 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1754,7 +1754,8 @@ static int fallback_to_cow(struct btrfs_inode *inode,
spin_unlock(&sinfo->lock);
if (count > 0)
- btrfs_clear_extent_bits(io_tree, start, end, EXTENT_NORESERVE);
+ btrfs_clear_extent_bit(io_tree, start, end, EXTENT_NORESERVE,
+ &cached_state);
}
btrfs_unlock_extent(io_tree, start, end, &cached_state);