Commit 27d7c2a0 authored Dec 05, 2012 by Dan Carpenter Committed by Linus Torvalds Dec 05, 2012

vfs: clear to the end of the buffer on partial buffer reads



READ is zero so the "rw & READ" test is always false.  The intended test
was "((rw & RW_MASK) == READ)".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent df2fc246

fs/buffer.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2935,7 +2935,7 @@ static void guard_bh_eod(int rw, struct bio bio, struct buffer_head bh)
		bio->bi_io_vec[0].bv_len = bytes;

		/* ..and clear the end of the buffer for reads */
		if (rw & READ) {
		if ((rw & RW_MASK) == READ) {
		void *kaddr = kmap_atomic(bh->b_page);
		memset(kaddr + bh_offset(bh) + bytes, 0, bh->b_size - bytes);
		kunmap_atomic(kaddr);