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authorJens Axboe <axboe@kernel.dk>2018-11-15 19:42:07 -0700
committerJens Axboe <axboe@kernel.dk>2018-11-15 19:47:35 -0700
commit9334ae5e6f9972110c2be136178ca2591c072b62 (patch)
tree7ea04e9483dbd948ab13a24af717b3e24ed29819 /drivers/ide
parentdb29eb059cdc571f9d75cec4a41b9884b3b8286a (diff)
downloadlinux-stericsson-9334ae5e6f9972110c2be136178ca2591c072b62.tar.gz
ide: clear ide_req()->special for non-passthrough requests
The initial patch cleared this for all requests, which is wrong since internal uses can't have this cleared as that's what they are using to pass data. The fix moved the initialization to the mq_ops->initialize_rq_fn(), but that's only a partial fix since it only catches uses from blk_get_request(), not requests coming from the file system. Keep the non-fs initialization, and add the IDE entry clear IFF RQF_DONTPREP isn't set and it's a passthrough request. Fixes: d16a67667c61 ("ide: don't clear special on ide_queue_rq() entry") Fixes: 22ce0a7ccf23 ("ide: don't use req->special") Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/ide')
-rw-r--r--drivers/ide/ide-io.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index c0dd0fad16a3..8445b484ae69 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -463,6 +463,11 @@ blk_status_t ide_queue_rq(struct blk_mq_hw_ctx *hctx,
struct request *rq = bd->rq;
ide_startstop_t startstop;
+ if (!blk_rq_is_passthrough(rq) && !(rq->rq_flags & RQF_DONTPREP)) {
+ rq->rq_flags |= RQF_DONTPREP;
+ ide_req(rq)->special = NULL;
+ }
+
/* HLD do_request() callback might sleep, make sure it's okay */
might_sleep();