github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 01:32:21 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

block: clear BLK_FEAT_PCI_P2PDMA in blk_stack_limits() for non-supporting devices

Browse Source 
BLK_FEAT_NOWAIT and BLK_FEAT_POLL are cleared in blk_stack_limits()
when an underlying device does not support them.  Apply the same
treatment to BLK_FEAT_PCI_P2PDMA: stacking drivers set it
unconditionally and rely on the core to clear it whenever a
non-supporting member device is stacked.

Tested-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Tested=by: Pranjal Shrivastava <praan@google.com>
Link: https://patch.msgid.link/20260513185153.95552-2-kch@nvidia.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Chaitanya Kulkarni 2026-05-13 11:51:51 -07:00 committed by Jens Axboe
parent ee9895ae5a
commit 7882834048
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
block/blk-settings.c
View File

@ -795,6 +795,8 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
t->features &= ~BLK_FEAT_NOWAIT;
if (!(b->features & BLK_FEAT_POLL))
t->features &= ~BLK_FEAT_POLL;
if (!(b->features & BLK_FEAT_PCI_P2PDMA))
t->features &= ~BLK_FEAT_PCI_P2PDMA;
t->flags |= (b->flags & BLK_FLAG_MISALIGNED);