git.kernelconcepts.de Git - karo-tx-linux.git/commit

]> git.kernelconcepts.de Git - karo-tx-linux.git/commit

author	Trond Myklebust <trond.myklebust@primarydata.com>
	Tue, 11 Jul 2017 21:53:48 +0000 (17:53 -0400)
committer	Anna Schumaker <Anna.Schumaker@Netapp.com>
	Thu, 13 Jul 2017 20:57:18 +0000 (16:57 -0400)
commit	301bfa483016d48b7fb9cbad87c0a04a15c25b90
tree	1e86b94a773529cae5a3144e03ff7b35f7673188	tree \| snapshot
parent	00422483ad415d6267d36711f0e51f4bbbd653ed	commit \| diff

NFS: Don't run wake_up_bit() when nobody is waiting...

"perf lock" shows fairly heavy contention for the bit waitqueue locks
when doing an I/O heavy workload.
Use a bit to tell whether or not there has been contention for a lock
so that we can optimise away the bit waitqueue options in those cases.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

fs/nfs/pagelist.c		diff \| blob \| history
include/linux/nfs_page.h		diff \| blob \| history

Linux kernel for KaRo TX COM modules

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