Messages in this thread Patch in this message | | | From | Jens Axboe <> | Subject | [PATCH 2/8] Add WRITE_SYNC_PLUG and SWRITE_SYNC_PLUG | Date | Mon, 6 Apr 2009 14:48:02 +0200 |
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(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> --- 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 a09e17c..ea05109 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)) -- 1.6.2.1.423.g442d
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