cifs: implement i_op->atomic_open()

Add an ->atomic_open implementation which replaces the atomic lookup+open+create operation implemented via ->lookup and ->create operations. Signed-off-by: Miklos Szeredi <[email protected]> CC: Steve French <[email protected]> Signed-off-by: Al Viro <[email protected]>
chewitt · Jul 14, 2012 · d2c1271 · d2c1271
1 parent c8ccbe0
commit d2c1271
Show file tree

Hide file tree

Showing 3 changed files with 247 additions and 198 deletions.
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
@@ -777,6 +777,7 @@ struct file_system_type cifs_fs_type = {
 };
 const struct inode_operations cifs_dir_inode_ops = {
 	.create = cifs_create,
+	.atomic_open = cifs_atomic_open,
 	.lookup = cifs_lookup,
 	.getattr = cifs_getattr,
 	.unlink = cifs_unlink,

diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
@@ -46,6 +46,9 @@ extern const struct inode_operations cifs_dir_inode_ops;
 extern struct inode *cifs_root_iget(struct super_block *);
 extern int cifs_create(struct inode *, struct dentry *, umode_t,
 		       struct nameidata *);
+extern struct file *cifs_atomic_open(struct inode *, struct dentry *,
+				     struct opendata *, unsigned, umode_t,
+				     bool *);
 extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
 				  struct nameidata *);
 extern int cifs_unlink(struct inode *dir, struct dentry *dentry);