netsniff-ng.git - A high-performance Linux networking toolkit

Age	Commit message (Expand)	Author	Files	Lines
2013-06-14	dissector: lldp: Rework capability printing	Tobias Klauser	1	-8/+14
2013-06-04	xutils: eliminate xutils, move rest to epoll2	Daniel Borkmann	1	-1/+0
2013-05-12	dissector: lldp: NULL check before dereference	Tobias Klauser	1	-2/+10
2013-03-15	all: import netsniff-ng 0.5.8-rc0 source	Daniel Borkmann	1	-0/+469

tterJens Axboe <axboe@fb.com>2016-07-20 17:35:20 -0600 commite950fdf71c9b4a6b63b58fed78956a96cc907402 (patch) treeeadcf71a0abf034caaab5b019fe8f290df7fbc14 /Makefile parentb09dcf585df959cf26270e65941ea1f79a1345aa (diff)

block: introduce BLKDEV_DISCARD_ZERO to fix zeroout

Currently blkdev_issue_zeroout cascades down from discards (if the driver guarantees that discards zero data), to WRITE SAME and then to a loop writing zeroes. Unfortunately we ignore run-time EOPNOTSUPP errors in the block layer blkdev_issue_discard helper to work around DM volumes that may have mixed discard support underneath. This patch intoroduces a new BLKDEV_DISCARD_ZERO flag to blkdev_issue_discard that indicates we are called for zeroing operation. This allows both to ignore the EOPNOTSUPP hack and actually consolidating the discard_zeroes_data check into the function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <axboe@fb.com>

Diffstat (limited to 'Makefile')