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| author | Ming Lin <ming.l@ssi.samsung.com> | 2015-10-22 18:59:42 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-10-28 01:12:58 +0100 |
| commit | a22c4d7e34402ccdf3414f64c50365436eba7b93 (patch) | |
| tree | 2d71db7c04930b5f88f4745cb6c8d5c59cf33075 /arch/x86 | |
| parent | Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm (diff) | |
| download | linux-a22c4d7e34402ccdf3414f64c50365436eba7b93.tar.xz linux-a22c4d7e34402ccdf3414f64c50365436eba7b93.zip | |
block: re-add discard_granularity and alignment checks
In commit b49a087("block: remove split code in
blkdev_issue_{discard,write_same}"), discard_granularity and alignment
checks were removed. Ideally, with bio late splitting, the upper layers
shouldn't need to depend on device's limits.
Christoph reported a discard regression on the HGST Ultrastar SN100 NVMe
device when mkfs.xfs. We have not found the root cause yet.
This patch re-adds discard_granularity and alignment checks by reverting
the related changes in commit b49a087. The good thing is now we can
remove the 2G discard size cap and just use UINT_MAX to avoid bi_size
overflow.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'arch/x86')
0 files changed, 0 insertions, 0 deletions