diff options
| author |   Jens Axboe <jens.axboe@oracle.com> | 2009-04-06 14:48:02 +0200 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-06 08:04:53 -0700 |
| commit | a1f242524c3c1f5d40f1c9c343427e34d1aadd6e (patch) | |
| tree | 53d085bd25792ab45dafbd4ab1dc537c6ab8e467 /include/linux/fs.h | |
| parent | block: change the request allocation/congestion logic to be sync/async based (diff) | |
| download | linux-dev-a1f242524c3c1f5d40f1c9c343427e34d1aadd6e.tar.xz linux-dev-a1f242524c3c1f5d40f1c9c343427e34d1aadd6e.zip | |
Add WRITE_SYNC_PLUG and SWRITE_SYNC_PLUG
(S)WRITE_SYNC always unplugs the device right after IO submission.
Sometimes we want to build up a queue before doing so, so add
variants that explicitly DON'T unplug the queue. The caller must
then do that after submitting all the IO.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/fs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index a09e17c8f5fd..ea0510978f76 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -96,7 +96,10 @@ struct inodes_stat_t { #define READ_SYNC (READ | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) #define READ_META (READ | (1 << BIO_RW_META)) #define WRITE_SYNC (WRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) +#define WRITE_SYNC_PLUG (WRITE | (1 << BIO_RW_SYNCIO)) #define SWRITE_SYNC (SWRITE | (1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)) +#define SWRITE_SYNC_PLUG \ + (SWRITE | (1 << BIO_RW_SYNCIO)) #define WRITE_BARRIER (WRITE | (1 << BIO_RW_BARRIER)) #define DISCARD_NOBARRIER (1 << BIO_RW_DISCARD) #define DISCARD_BARRIER ((1 << BIO_RW_DISCARD) | (1 << BIO_RW_BARRIER)) |