fix setattr error handling in sysfs, configfs
sysfs and configfs setattr functions have error cases after the generic inode's
attributes have been changed. Fix consistency by changing the generic inode
attributes only when it is guaranteed to succeed.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c
index 4164514..cf78d44 100644
--- a/fs/configfs/inode.c
+++ b/fs/configfs/inode.c
@@ -72,10 +72,6 @@
if (!sd)
return -EINVAL;
- error = simple_setattr(dentry, iattr);
- if (error)
- return error;
-
sd_iattr = sd->s_iattr;
if (!sd_iattr) {
/* setting attributes for the first time, allocate now */
@@ -89,9 +85,12 @@
sd_iattr->ia_atime = sd_iattr->ia_mtime = sd_iattr->ia_ctime = CURRENT_TIME;
sd->s_iattr = sd_iattr;
}
-
/* attributes were changed atleast once in past */
+ error = simple_setattr(dentry, iattr);
+ if (error)
+ return error;
+
if (ia_valid & ATTR_UID)
sd_iattr->ia_uid = iattr->ia_uid;
if (ia_valid & ATTR_GID)