On Thu, Mar 19, 2009 at 09:47:12PM +0530, Amit Shah wrote:
On (Thu) Mar 19 2009 [20:17:52], Amit Shah wrote:
This patchset makes use of the posix_fallocate() call to allocate chunks of files whenever needed if it's available.
We fallback to using safewrite() if it's not available.
mmap() could be used instead of safewrite too; I have a patch in case someone is interested in seeing it.
Something like this:
From d33b843b381ea6a25c6e8efb6b248965a40e5f84 Mon Sep 17 00:00:00 2001 From: Amit Shah <amit.shah@redhat.com> Date: Thu, 19 Mar 2009 21:43:50 +0530 Subject: [PATCH] Use mmap() and memset() for safezero
If available, use mmap to allocate zeroed chunks for files. This should be faster than allocating small chunks using safewrite.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
ACK, looks like a good extension. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|