new helper: inode_unhashed()

note: for race-free uses you inode_lock held

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index 080b09a57a8f..27a58120dbd5 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2146,7 +2146,7 @@ static int shmem_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
         if (*len < 3)
                 return 255;
 
-        if (hlist_unhashed(&inode->i_hash)) {
+        if (inode_unhashed(inode)) {
                 /* Unfortunately insert_inode_hash is not idempotent,
                  * so as we hash inodes here rather than at creation
                  * time, we need a lock to ensure we only try
@@ -2154,7 +2154,7 @@ static int shmem_encode_fh(struct dentry *dentry, __u32 *fh, int *len,
                  */
                 static DEFINE_SPINLOCK(lock);
                 spin_lock(&lock);
-                if (hlist_unhashed(&inode->i_hash))
+                if (inode_unhashed(inode))
                         __insert_inode_hash(inode,
                                             inode->i_ino + inode->i_generation);
                 spin_unlock(&lock);