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authorDavid Woodhouse <David.Woodhouse@intel.com>2008-08-09 11:42:20 -0400
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 02:56:02 -0400
commite17fc0a1ccf88f6d4dcb363729f3141b0958c325 (patch)
tree0a7c2dc1c3159c2af14d87c67ca83e158b2c78b5 /fs/nfs/nfs4renewd.c
parentd30a2605be9d5132d95944916e8f578fcfe4f976 (diff)
Allow elevators to sort/merge discard requests
But blkdev_issue_discard() still emits requests which are interpreted as soft barriers, because naïve callers might otherwise issue subsequent writes to those same sectors, which might cross on the queue (if they're reallocated quickly enough). Callers still _can_ issue non-barrier discard requests, but they have to take care of queue ordering for themselves. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/nfs/nfs4renewd.c')
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