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Jens Axboe abf137dd77 aio: make the lookup_ioctx() lockless ... The mm->ioctx_list is currently protected by a reader-writer lock, so we always grab that lock on the read side for doing ioctx lookups. As the workload is extremely reader biased, turn this into an rcu hlist so we can make lookup_ioctx() lockless. Get rid of the rwlock and use a spinlock for providing update side exclusion. There's usually only 1 entry on this list, so it doesn't make sense to look into fancier data structures. Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		16 years ago
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alpha	…
arm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	16 years ago
avr32	…
blackfin	…
cris	…
frv	…
h8300	…
ia64	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	16 years ago
m32r	…
m68k	m68k: fix trigraph ignored warning in setox.S	16 years ago
m68knommu	…
mips	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	16 years ago
mn10300	…
parisc	Merge branch 'next' into for-linus	16 years ago
powerpc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	16 years ago
s390	aio: make the lookup_ioctx() lockless	16 years ago
sh	Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6	16 years ago
sparc	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	16 years ago
sparc64	…
um	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6	16 years ago
x86	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-next	16 years ago
xtensa	…
.gitignore	…
Kconfig	…