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FS: Use stable writes when not doing a bulk flush

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If we're only doing a single write, and there are no other unstable
writes being queued up, we might want to just flip to using a stable
write RPC call.

Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2011-03-21 17:02:00 -04:00
parent 8e26de238f
commit b31268ac79
4 changed files with 19 additions and 3 deletions
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2
include/linux/nfs_fs.h
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@ -33,6 +33,8 @@
#define FLUSH_STABLE 4 /* commit to stable storage */
#define FLUSH_LOWPRI 8 /* low priority background flush */
#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */
#define FLUSH_COND_STABLE 32 /* conditional stable write - only stable
* if everything fits in one RPC */
#ifdef __KERNEL__