commit 1ada160618d66bc57beacb4c35f13e9a4c269afa
author Kent Overstreet <kent.overstreet@gmail.com> Mon Jun 15 14:58:47 2020 -0400
committer Kent Overstreet <kent.overstreet@linux.dev> Sun Oct 22 17:08:41 2023 -0400
tree da5f9d4111d5b12bac49a3b53faac7609c331aa1
parent 7fffc85baf1fa176560a546a0625efc549969ce4

bcachefs: Turn c->state_lock into an rwsem

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/bcachefs.h

diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h
index a219969..8d9cc7e 100644
--- a/fs/bcachefs/bcachefs.h
+++ b/fs/bcachefs/bcachefs.h
@@ -551,8 +551,8 @@ struct bch_fs {
 	struct super_block	*vfs_sb;
 	char			name[40];
 
-	/* ro/rw, add/remove devices: */
-	struct mutex		state_lock;
+	/* ro/rw, add/remove/resize devices: */
+	struct rw_semaphore	state_lock;
 
 	/* Counts outstanding writes, for clean transition to read-only */
 	struct percpu_ref	writes;