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| author | Bart Van Assche <bart.vanassche@wdc.com> | 2018-06-25 15:51:30 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-24 13:09:09 +0200 |
| commit | a567493430be60b2a29b37d6401992f68acce032 (patch) | |
| tree | 57f9234ba6715d2b61aafe4b8045672694c04cda /drivers/block | |
| parent | 8a9e8b683a7c8a3fb52fcaa692ffd704ba03f29d (diff) | |
| download | linux-stable-a567493430be60b2a29b37d6401992f68acce032.tar.gz linux-stable-a567493430be60b2a29b37d6401992f68acce032.tar.bz2 linux-stable-a567493430be60b2a29b37d6401992f68acce032.zip | |
drbd: Fix drbd_request_prepare() discard handling
[ Upstream commit fad2d4ef636654e926d374ef038f4cd4286661f6 ]
Fix the test that verifies whether bio_op(bio) represents a discard
or write zeroes operation. Compile-tested only.
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>
Fixes: 7435e9018f91 ("drbd: zero-out partial unaligned discards on local backend")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index de8566e55334..c72071c300bb 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1244,8 +1244,8 @@ drbd_request_prepare(struct drbd_device *device, struct bio *bio, unsigned long _drbd_start_io_acct(device, req); /* process discards always from our submitter thread */ - if ((bio_op(bio) & REQ_OP_WRITE_ZEROES) || - (bio_op(bio) & REQ_OP_DISCARD)) + if (bio_op(bio) == REQ_OP_WRITE_ZEROES || + bio_op(bio) == REQ_OP_DISCARD) goto queue_for_submitter_thread; if (rw == WRITE && req->private_bio && req->i.size |