scsi: ->queue_rq can't sleep
authorChristoph Hellwig <hch@lst.de>
Mon, 5 Jan 2015 19:29:38 +0000 (20:29 +0100)
committerChristoph Hellwig <hch@lst.de>
Fri, 9 Jan 2015 14:43:01 +0000 (15:43 +0100)
commit70a0f2c1898c6abf53670e55642b6e840b003892
tree3b472f6f398cc774baf556fd592eb7b0acce262e
parent1018b8b90b1f5cf239d731fb792ddc2b4a2b4ef5
scsi: ->queue_rq can't sleep

The blk-mq ->queue_rq method is always called from process context,
but might have preemption disabled.  This means we still always
have to use GFP_ATOMIC for memory allocations, and thus need to
revert part of commit 3c356bde1 ("scsi: stop passing a gfp_mask
argument down the command setup path").

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Tested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
drivers/scsi/scsi_lib.c