Denis V. Lunev b953f07500 block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes ...

This efficiently writes zeroes on Linux if the kernel is capable enough.
FALLOC_FL_ZERO_RANGE correctly handles all cases, including and not
including file expansion.

CC: Kevin Wolf <kwolf@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Peter Lieven <pl@kamp.de>
CC: Fam Zheng <famz@redhat.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2015-02-06 17:24:20 +01:00

..

accounting.c

block: do not use get_clock()

2014-12-10 10:31:13 +01:00

archipelago.c

…

backup.c

qmp: Add command 'blockdev-backup'

2015-01-13 11:47:56 +00:00

blkdebug.c

blkdebug: Simplify and improve filename generation

2014-12-10 10:31:11 +01:00

blkverify.c

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block-backend.c

coroutine: drop qemu_coroutine_adjust_pool_size

2015-01-13 13:43:29 +00:00

bochs.c

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cloop.c

…

commit.c

block: let commit blockjob run in BDS AioContext

2014-11-03 11:41:49 +00:00

curl.c

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dmg.c

…

gluster.c

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iscsi.c

block/iscsi: fix uninitialized variable

2015-01-03 09:22:13 +01:00

linux-aio.c

linux-aio: simplify removal of completed iocbs from the list

2014-12-12 16:57:55 +00:00

Makefile.objs

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mirror.c

block: mirror - change string allocation to 2-bytes

2015-01-23 18:17:06 +01:00

nbd-client.c

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nbd-client.h

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nbd.c

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nfs.c

block/nfs: Add create_opts

2014-12-10 10:31:19 +01:00

null.c

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parallels.c

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qapi.c

block: update string sizes for filename,backing_file,exact_filename

2015-01-23 18:17:06 +01:00

qcow2-cache.c

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qcow2-cluster.c

qcow2: Add two more unalignment checks

2015-01-23 18:17:05 +01:00

qcow2-refcount.c

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qcow2-snapshot.c

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qcow2.c

block: update string sizes for filename,backing_file,exact_filename

2015-01-23 18:17:06 +01:00

qcow2.h

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qcow.c

block: update string sizes for filename,backing_file,exact_filename

2015-01-23 18:17:06 +01:00

qed-check.c

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qed-cluster.c

…

qed-gencb.c

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qed-l2-cache.c

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qed-table.c

block: Rename BlockDriverCompletionFunc to BlockCompletionFunc

2014-10-20 13:41:27 +02:00

qed.c

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qed.h

…

quorum.c

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raw_bsd.c

block: Make essential BlockDriver objects public

2014-12-10 10:31:19 +01:00

raw-aio.h

linux-aio: drop return code from laio_io_unplug and ioq_submit

2014-12-12 16:57:55 +00:00

raw-posix.c

block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes

2015-02-06 17:24:20 +01:00

raw-win32.c

block: Make essential BlockDriver objects public

2014-12-10 10:31:19 +01:00

rbd.c

block/rbd: fix memory leak

2014-12-12 13:16:56 +00:00

sheepdog.c

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snapshot.c

…

ssh.c

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stream.c

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vdi.c

block: remove BLOCK_OPT_NOCOW from vdi_create_opts

2014-12-10 10:31:20 +01:00

vhdx-endian.c

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vhdx-log.c

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vhdx.c

block: vhdx - force FileOffsetMB field to '0' for certain block states

2015-01-23 12:41:32 -05:00

vhdx.h

block: vhdx - update PAYLOAD_BLOCK_UNMAPPED value to match 1.00 spec

2014-12-12 15:42:22 +00:00

vmdk.c

block: vmdk - move string allocations from stack to the heap

2015-01-23 18:17:05 +01:00

vpc.c

block: remove BLOCK_OPT_NOCOW from vpc_create_opts

2014-12-10 10:31:21 +01:00

vvfat.c

block: update string sizes for filename,backing_file,exact_filename

2015-01-23 18:17:06 +01:00

win32-aio.c

…