| Message ID | 20180525034621.31147-10-ming.lei@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/buffer.c b/fs/buffer.c index 249b83fafe48..da4b19f7b67b 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3021,7 +3021,10 @@ void guard_bio_eod(int op, struct bio *bio) /* ..and clear the end of the buffer for reads */ if (op == REQ_OP_READ) { - zero_user(bvec->bv_page, bvec->bv_offset + bvec->bv_len, + struct bio_vec bv; + + segment_last_page(bvec, &bv); + zero_user(bv.bv_page, bv.bv_offset + bv.bv_len, truncated_bytes); } }
Once multipage bvec is enabled, the last bvec may include more than one page, this patch use segment_last_page() to truncate the bio. Signed-off-by: Ming Lei <ming.lei@redhat.com> --- fs/buffer.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)