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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2013-06-24 17:13:10 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-06-28 09:20:26 +0200 |
| commit | d616b224745b2c522f965cf8de7da17b553b959a (patch) | |
| tree | df5c6f5b8e13823d4c202782eec90c93b55997a6 /hw/lm32/lm32_boards.c | |
| parent | 5dae8e5fb803f53fadc116cefe353953b938cbe1 (diff) | |
| download | focaccia-qemu-d616b224745b2c522f965cf8de7da17b553b959a.tar.gz focaccia-qemu-d616b224745b2c522f965cf8de7da17b553b959a.zip | |
block: add bdrv_add_before_write_notifier()
The bdrv_add_before_write_notifier() function installs a callback that is invoked before a write request is processed. This will be used to implement copy-on-write point-in-time snapshots where we need to copy out old data before overwriting it. Note that BdrvTrackedRequest is moved to block_int.h since it is passed to .notify() functions. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/lm32/lm32_boards.c')
0 files changed, 0 insertions, 0 deletions