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    Subject[PATCH 12/17] mconsole: switch to kernel_read
    Date
    Instead of playing with address limits.

    Signed-off-by: Christoph Hellwig <hch@lst.de>
    ---
    arch/um/drivers/mconsole_kern.c | 7 +------
    1 file changed, 1 insertion(+), 6 deletions(-)

    diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
    index af326fb6510d..c4d162a94be9 100644
    --- a/arch/um/drivers/mconsole_kern.c
    +++ b/arch/um/drivers/mconsole_kern.c
    @@ -148,12 +148,7 @@ void mconsole_proc(struct mc_request *req)
    }

    do {
    - loff_t pos = file->f_pos;
    - mm_segment_t old_fs = get_fs();
    - set_fs(KERNEL_DS);
    - len = vfs_read(file, buf, PAGE_SIZE - 1, &pos);
    - set_fs(old_fs);
    - file->f_pos = pos;
    + len = kernel_read(file, buf, PAGE_SIZE - 1, &file->f_pos);
    if (len < 0) {
    mconsole_reply(req, "Read of file failed", 1, 0);
    goto out_free;
    --
    2.11.0
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