locks: add a dedicated spinlock to protect i_flctx lists
We can now add a dedicated spinlock without expanding struct inode.
Change to using that to protect the various i_flctx lists.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Acked-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index 19beeed..0303da8 100644
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -255,12 +255,12 @@
ctx = inode->i_flctx;
if (ctx) {
- spin_lock(&inode->i_lock);
+ spin_lock(&ctx->flc_lock);
list_for_each_entry(lock, &ctx->flc_posix, fl_list)
++(*fcntl_count);
list_for_each_entry(lock, &ctx->flc_flock, fl_list)
++(*flock_count);
- spin_unlock(&inode->i_lock);
+ spin_unlock(&ctx->flc_lock);
}
dout("counted %d flock locks and %d fcntl locks",
*flock_count, *fcntl_count);
@@ -288,7 +288,7 @@
if (!ctx)
return 0;
- spin_lock(&inode->i_lock);
+ spin_lock(&ctx->flc_lock);
list_for_each_entry(lock, &ctx->flc_flock, fl_list) {
++seen_fcntl;
if (seen_fcntl > num_fcntl_locks) {
@@ -312,7 +312,7 @@
++l;
}
fail:
- spin_unlock(&inode->i_lock);
+ spin_unlock(&ctx->flc_lock);
return err;
}