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| author | Christoph Hellwig <hch@lst.de> | 2017-09-01 17:39:20 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-09-04 19:05:16 -0400 |
| commit | 21cb2559eb510dfbe9b5d0dd31605f44d2cd2891 (patch) | |
| tree | e1480e69a62e052804d690aca80549612c07c142 | |
| parent | 8e93157bdd4a9718ce8e05c370ab9fe48debb4c2 (diff) | |
| download | linux-stable-21cb2559eb510dfbe9b5d0dd31605f44d2cd2891.tar.gz linux-stable-21cb2559eb510dfbe9b5d0dd31605f44d2cd2891.tar.bz2 linux-stable-21cb2559eb510dfbe9b5d0dd31605f44d2cd2891.zip | |
mconsole: switch to kernel_read
Instead of playing with address limits.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/um/drivers/mconsole_kern.c | 7 |
1 files changed, 1 insertions, 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; |