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From: | Denis V. Lunev |
Subject: | [Qemu-devel] [PATCH v2 0/7] eliminate data write in bdrv_write_zeroes on Linux |
Date: | Fri, 26 Dec 2014 15:35:06 +0300 |
These patches eliminate data writes completely on Linux if fallocate FALLOC_FL_ZERO_RANGE or FALLOC_FL_PUNCH_HOLE are supported on underlying filesystem. This should seriously increase performance in some special cases. Signed-off-by: Denis V. Lunev <address@hidden> CC: Kevin Wolf <address@hidden> CC: Stefan Hajnoczi <address@hidden>
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