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    Subject[PATCH 3/4] mm/shmem: return error code directly
    Date
    If [addr, addr + len) beyond TASK_SIZE, return error code directly.
    No need to check this case in caller.

    Signed-off-by: Chen Wandun <chenwandun@huawei.com>
    ---
    mm/shmem.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/mm/shmem.c b/mm/shmem.c
    index 1136dd7da9e5..ca04f3975a8a 100644
    --- a/mm/shmem.c
    +++ b/mm/shmem.c
    @@ -2146,7 +2146,7 @@ unsigned long shmem_get_unmapped_area(struct file *file,
    if (offset_in_page(addr))
    return -EINVAL;
    if (addr > TASK_SIZE - len)
    - return addr;
    + return -ENOMEM;

    if (shmem_huge == SHMEM_HUGE_DENY)
    return addr;
    --
    2.25.1
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