kill boilerplate around posix_acl_chmod_masq()

new helper: posix_acl_chmod(&acl, gfp, mode).  Replaces acl with modified
clone or with NULL if that has failed; returns 0 or -ve on error.  All
callers of posix_acl_chmod_masq() switched to that - they'd been doing
exactly the same thing.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index b1cf6bf4b41..0aa9f167672 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -386,3 +386,21 @@ posix_acl_chmod_masq(struct posix_acl *acl, mode_t mode)
 
         return 0;
 }
+
+int
+posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, mode_t mode)
+{
+        struct posix_acl *clone = posix_acl_clone(*acl, gfp);
+        int err = -ENOMEM;
+        if (clone) {
+                err = posix_acl_chmod_masq(clone, mode);
+                if (err) {
+                        posix_acl_release(clone);
+                        clone = NULL;
+                }
+        }
+        posix_acl_release(*acl);
+        *acl = clone;
+        return err;
+}
+EXPORT_SYMBOL(posix_acl_chmod);