[PATCH 4.9 23/25] ext4: check return value of kstrtoull correctly in reserved_clusters_store

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Chao Yu commit 1ea1516fbbab2b30bf98c534ecaacba579a35208 upstream. kstrtoull returns 0 on success, however, in reserved_clusters_store we will return -EINVAL if kstrtoull

[PATCH 4.9 23/25] ext4: check return value of kstrtoull correctly in reserved_clusters_store

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Chao Yu commit 1ea1516fbbab2b30bf98c534ecaacba579a35208 upstream. kstrtoull returns 0 on success, however, in reserved_clusters_store we will return -EINVAL if kstrtoull returns 0, it makes us