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| author | Mikulas Patocka <mpatocka@redhat.com> | 2024-09-03 21:47:59 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-09-04 07:17:00 -0600 |
| commit | b858a36fe9a1261dfd097aec855161ad135bed60 (patch) | |
| tree | 9a5ca5fa6fb9fb6f5e4e0aac254b550250662df5 /block | |
| parent | e58f5142f88320a5b1449f96a146f2f24615c5c7 (diff) | |
| download | lwn-b858a36fe9a1261dfd097aec855161ad135bed60.tar.gz lwn-b858a36fe9a1261dfd097aec855161ad135bed60.zip | |
bio-integrity: don't restrict the size of integrity metadata
bio_integrity_add_page restricts the size of the integrity metadata to
queue_max_hw_sectors(q). This restriction is not needed because oversized
bios are split automatically. This restriction causes problems with
dm-integrity 'inline' mode - if we send a large bio to dm-integrity and
the bio's metadata are larger than queue_max_hw_sectors(q),
bio_integrity_add_page fails and the bio is ended with BLK_STS_RESOURCE
error.
An example that triggers it:
dd: error writing '/dev/mapper/in2': Cannot allocate memory
1+0 records in
0+0 records out
0 bytes copied, 0.00169291 s, 0.0 kB/s
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: fb0987682c62 ("dm-integrity: introduce the Inline mode")
Fixes: 0ece1d649b6d ("bio-integrity: create multi-page bvecs in bio_integrity_add_page()")
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Anuj Gupta <anuj20.g@samsung.com>
Link: https://lore.kernel.org/r/e41b3b8e-16c2-70cb-97cb-881234bb200d@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bio-integrity.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 8d1fb38f745f..96a2653905ae 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -167,10 +167,6 @@ int bio_integrity_add_page(struct bio *bio, struct page *page, struct request_queue *q = bdev_get_queue(bio->bi_bdev); struct bio_integrity_payload *bip = bio_integrity(bio); - if (((bip->bip_iter.bi_size + len) >> SECTOR_SHIFT) > - queue_max_hw_sectors(q)) - return 0; - if (bip->bip_vcnt > 0) { struct bio_vec *bv = &bip->bip_vec[bip->bip_vcnt - 1]; bool same_page = false; |