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-rw-r--r--fs/buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index c4e11390a44c..ec0aca8ba6bf 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -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);