fuse: cleanup: add fuse_get_attr_version()

Extract repeated code into helper function, as suggested by Akpm.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 18 insertions, 9 deletions

diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 7b3df35cf196..c84f825b57e7 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -132,6 +132,21 @@ static void fuse_lookup_init(struct fuse_req *req, struct inode *dir,
         req->out.args[0].value = outarg;
 }
 
+static u64 fuse_get_attr_version(struct fuse_conn *fc)
+{
+        u64 curr_version;
+
+        /*
+         * The spin lock isn't actually needed on 64bit archs, but we
+         * don't yet care too much about such optimizations.
+         */
+        spin_lock(&fc->lock);
+        curr_version = fc->attr_version;
+        spin_unlock(&fc->lock);
+
+        return curr_version;
+}
+
 /*
  * Check whether the dentry is still valid
  *
@@ -171,9 +186,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
                         return 0;
                 }
 
-                spin_lock(&fc->lock);
-                attr_version = fc->attr_version;
-                spin_unlock(&fc->lock);
+                attr_version = fuse_get_attr_version(fc);
 
                 parent = dget_parent(entry);
                 fuse_lookup_init(req, parent->d_inode, entry, &outarg);
@@ -264,9 +277,7 @@ static struct dentry *fuse_lookup(struct inode *dir, struct dentry *entry,
                 return ERR_PTR(PTR_ERR(forget_req));
         }
 
-        spin_lock(&fc->lock);
-        attr_version = fc->attr_version;
-        spin_unlock(&fc->lock);
+        attr_version = fuse_get_attr_version(fc);
 
         fuse_lookup_init(req, dir, entry, &outarg);
         request_send(fc, req);
@@ -733,9 +744,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
         if (IS_ERR(req))
                 return PTR_ERR(req);
 
-        spin_lock(&fc->lock);
-        attr_version = fc->attr_version;
-        spin_unlock(&fc->lock);
+        attr_version = fuse_get_attr_version(fc);
 
         memset(&inarg, 0, sizeof(inarg));
         memset(&outarg, 0, sizeof(outarg));