btrfs: remove BTRFS_REF_LAST from enum btrfs_ref_type

Commit b28b1f0ce44c ("btrfs: delayed-ref: Introduce better documented
delayed ref structures") introduced BTRFS_REF_LAST, which can be used
for sanity checking, e.g. in switch/case or for loops.

In btrfs_ref_type() there is an assertion

  ASSERT(ref->type == BTRFS_REF_DATA || ref->type == BTRFS_REF_METADATA);

to validate the values so we don't need the ending enum.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index f5ae880308d389f18ce46b68fc9cc1e36b669dd3..78cc2383761057fd2ac1af2c70e96d9c88597740 100644 (file)
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -262,7 +262,6 @@ enum btrfs_ref_type {
        BTRFS_REF_NOT_SET,
        BTRFS_REF_DATA,
        BTRFS_REF_METADATA,
-       BTRFS_REF_LAST,
 } __packed;
 
 struct btrfs_ref {