diff options
| -rw-r--r-- | mm/shmem.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index a6f565308133..b7f2d4a56867 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3392,7 +3392,7 @@ static int shmem_parse_one(struct fs_context *fc, struct fs_parameter *param) break; case Opt_nr_blocks: ctx->blocks = memparse(param->string, &rest); - if (*rest) + if (*rest || ctx->blocks > S64_MAX) goto bad_value; ctx->seen |= SHMEM_SEEN_BLOCKS; break; @@ -3514,10 +3514,7 @@ static int shmem_reconfigure(struct fs_context *fc) raw_spin_lock(&sbinfo->stat_lock); inodes = sbinfo->max_inodes - sbinfo->free_inodes; - if (ctx->blocks > S64_MAX) { - err = "Number of blocks too large"; - goto out; - } + if ((ctx->seen & SHMEM_SEEN_BLOCKS) && ctx->blocks) { if (!sbinfo->max_blocks) { err = "Cannot retroactively limit size"; |