diff options
| -rw-r--r-- | mm/shmem.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 0087ceace76b..fac22b578eb9 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2140,9 +2140,11 @@ static long shmem_fallocate(struct file *file, int mode, loff_t offset, NULL); if (error) { /* Remove the !PageUptodate pages we added */ - shmem_undo_range(inode, - (loff_t)start << PAGE_CACHE_SHIFT, - ((loff_t)index << PAGE_CACHE_SHIFT) - 1, true); + if (index > start) { + shmem_undo_range(inode, + (loff_t)start << PAGE_CACHE_SHIFT, + ((loff_t)index << PAGE_CACHE_SHIFT) - 1, true); + } goto undone; } |