qemu-e2k/block
Christoph Hellwig 6f1953c4c1 block: use fdatasync instead of fsync if possible
If we are flushing the caches for our image files we only care about the
data (including the metadata required for accessing it) but not things
like timestamp updates.  So try to use fdatasync instead of fsync to
implement the flush operations.

Unfortunately many operating systems still do not support fdatasync,
so we add a qemu_fdatasync wrapper that uses fdatasync if available
as per the _POSIX_SYNCHRONIZED_IO feature macro or fsync otherwise.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 10:19:46 -05:00
..
bochs.c
cloop.c
cow.c block: use fdatasync instead of fsync if possible 2009-09-11 10:19:46 -05:00
curl.c Fix Sparse warning about "expression using sizeof on a function" 2009-08-01 10:13:44 +00:00
dmg.c Revert "support colon in filenames" 2009-07-09 16:06:38 -05:00
nbd.c
parallels.c
qcow2-cluster.c qcow2: Order concurrent AIO requests on the same unallocated cluster 2009-09-09 17:31:26 -05:00
qcow2-refcount.c Fix most warnings (errors with -Werror) when debugging is enabled 2009-07-20 17:19:25 +00:00
qcow2-snapshot.c Fix QCOW2 debugging code to compile again 2009-06-29 08:52:40 -05:00
qcow2.c qcow2: Order concurrent AIO requests on the same unallocated cluster 2009-09-09 17:31:26 -05:00
qcow2.h qcow2: Order concurrent AIO requests on the same unallocated cluster 2009-09-09 17:31:26 -05:00
qcow.c qcow1: Fix qcow_aio_writev 2009-07-10 13:44:29 -05:00
raw-posix-aio.h raw-posix: add Linux native AIO support 2009-08-27 20:30:22 -05:00
raw-posix.c block: use fdatasync instead of fsync if possible 2009-09-11 10:19:46 -05:00
raw-win32.c
vdi.c block/vdi.c: Fix several bugs 2009-08-27 19:33:15 -05:00
vmdk.c vmdk: Fix backing file handling 2009-07-22 10:58:47 -05:00
vpc.c Fix spelling in comment. 2009-09-09 14:57:20 -05:00
vvfat.c