fs: dcache per-inode inode alias locking

dcache_inode_lock can be replaced with per-inode locking. Use existing
inode->i_lock for this. This is slightly non-trivial because we sometimes
need to find the inode from the dentry, which requires d_inode to be
stabilised (either with refcount or d_lock).

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c
index 600101a21ba2..3a4557e8325c 100644
--- a/fs/affs/amigaffs.c
+++ b/fs/affs/amigaffs.c
@@ -128,7 +128,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
         void *data = dentry->d_fsdata;
         struct list_head *head, *next;
 
-        spin_lock(&dcache_inode_lock);
+        spin_lock(&inode->i_lock);
         head = &inode->i_dentry;
         next = head->next;
         while (next != head) {
@@ -139,7 +139,7 @@ affs_fix_dcache(struct dentry *dentry, u32 entry_ino)
                 }
                 next = next->next;
         }
-        spin_unlock(&dcache_inode_lock);
+        spin_unlock(&inode->i_lock);
 }