Commit 5a9294e5 authored Jun 24, 2016 by Andrey Vagin Committed by Linus Torvalds Jun 24, 2016

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: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus 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);

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