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| author |   Eric Blake <eblake@redhat.com> | 2011-07-11 15:26:33 -0600 |
|---|---|---|
| committer | Eric Blake <eblake@redhat.com> | 2011-07-21 16:24:08 -0600 |
| commit | 519a1c43791c369c2d1fa4ca058c5a824bedfe0d (patch) | |
| tree | 2af4da3b3dbadcf68504714e2c6321bfa0d9462a /cfg.mk | |
| parent | save: let iohelper work on O_DIRECT fds (diff) | |
| download | libvirt-519a1c43791c369c2d1fa4ca058c5a824bedfe0d.tar.gz libvirt-519a1c43791c369c2d1fa4ca058c5a824bedfe0d.tar.bz2 libvirt-519a1c43791c369c2d1fa4ca058c5a824bedfe0d.zip | |
save: add virFileDirectFd wrapper type
O_DIRECT has stringent requirements. Rather than make lots of changes
at each site that wants to use O_DIRECT, it is easier to offload
the work through a helper process that mirrors the I/O between a
pipe and the actual direct fd, so that the other end of the pipe
no longer has to worry about constraints.
Plus, if the kernel ever gains better posix_fadvise support, then we
only have to touch a single file to let all callers benefit from a
more efficient way to avoid file system caching.
* src/util/virfile.h (virFileDirectFdFlag, virFileDirectFdNew)
(virFileDirectFdClose, virFileDirectFdFree): New prototypes.
* src/util/virdirect.c: Implement new wrapper object.
* src/libvirt_private.syms (virfile.h): Export new symbols.
* cfg.mk (useless_free_options): Add to list.
* po/POTFILES.in: Add new translations.
Diffstat (limited to 'cfg.mk')
| -rw-r--r-- | cfg.mk | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -120,6 +120,7 @@ useless_free_options = \ --name=virDomainSoundDefFree \ --name=virDomainVideoDefFree \ --name=virDomainWatchdogDefFree \ + --name=virFileDirectFdFree \ --name=virHashFree \ --name=virInterfaceDefFree \ --name=virInterfaceIpDefFree \ |