Shaohua Li df680e4101 swap: make each swap partition have one address_space ... When I use several fast SSD to do swap, swapper_space.tree_lock is heavily contended. This makes each swap partition have one address_space to reduce the lock contention. There is an array of address_space for swap. The swap entry type is the index to the array. In my test with 3 SSD, this increases the swapout throughput 20%. [akpm@linux-foundation.org: revert unneeded change to __add_to_swap_cache] Signed-off-by: Shaohua Li <shli@fusionio.com> Cc: Hugh Dickins <hughd@google.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Change-Id: I8503ace83342398bf7be3d2216616868cca65311		2018-01-01 22:02:05 +03:00
..
array.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
base.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
cmdline.c
consoles.c
cpuinfo.c
devices.c
generic.c	proc: Allow proc_free_inum to be called from any context	2015-07-13 11:21:13 -07:00
inode.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
internal.h
interrupts.c
Kconfig
kcore.c
kmsg.c
loadavg.c
Makefile
meminfo.c	swap: make each swap partition have one address_space	2018-01-01 22:02:05 +03:00
mmu.c
namespaces.c	proc: Usable inode numbers for the namespace file descriptors.	2015-07-13 11:18:01 -07:00
nommu.c
page.c
proc_devtree.c
proc_net.c
proc_sysctl.c
proc_tty.c
root.c
softirqs.c
stat.c	Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1	2017-12-27 17:13:15 +03:00
task_mmu.c	BACKPORT: mm: /proc/pid/smaps:: show proportional swap share of the mapping	2017-12-27 22:48:40 +03:00
task_nommu.c
uptime.c
version.c
vmcore.c