Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5a9294e5 authored by Andrey Vagin's avatar Andrey Vagin Committed by Linus Torvalds
Browse files

autofs: don't get stuck in a loop if vfs_write() returns an error 

__vfs_write() returns a negative value in a error case.

Link: http://lkml.kernel.org/r/20160616083108.6278.65815.stgit@pluto.themaw.net


Signed-off-by: default avatarAndrey Vagin <avagin@openvz.org>
Signed-off-by: default avatarIan Kent <raven@themaw.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8285027f

fs/autofs4/waitq.c

+4 −3
Original line number Diff line number Diff line
@@ -66,11 +66,12 @@ static int autofs4_write(struct autofs_sb_info *sbi, 
	set_fs(KERNEL_DS);



	mutex_lock(&sbi->pipe_mutex);

	while (bytes) {

		wr = __vfs_write(file, data, bytes, &file->f_pos);

	while (bytes && wr) {

		if (wr <= 0)

			break;

		data += wr;

		bytes -= wr;

		wr = __vfs_write(file, data, bytes, &file->f_pos);

	}

	mutex_unlock(&sbi->pipe_mutex);