linux_dsm_epyc7002/include
Tejun Heo 7f822c24c2 memcg: drop unnecessary cold-path tests from __memcg_kmem_bypass()
__memcg_kmem_bypass() decides whether a kmem allocation should be bypassed
to the root memcg.  Some conditions that it tests are valid criteria
regarding who should be held accountable; however, there are a couple
unnecessary tests for cold paths - __GFP_FAIL and fatal_signal_pending().

The previous patch updated try_charge() to handle both __GFP_FAIL and
dying tasks correctly and the only thing these two tests are doing is
making accounting less accurate and sprinkling tests for cold path
conditions in the hot paths.  There's nothing meaningful gained by these
extra tests.

This patch removes the two unnecessary tests from __memcg_kmem_bypass().

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-11-05 19:34:48 -08:00
..
acpi Merge branch 'acpi-processor' 2015-11-02 00:50:37 +01:00
asm-generic Power management and ACPI updates for v4.4-rc1 2015-11-04 18:10:13 -08:00
clocksource
crypto crypto: ahash - Add crypto_ahash_blocksize 2015-10-20 22:10:48 +08:00
drm drm/dp/mst: make mst i2c transfer code more robust. 2015-10-15 09:06:20 +10:00
dt-bindings char/misc drivers for 4.4-rc1 2015-11-04 22:15:15 -08:00
keys
kvm arm/arm64: KVM: Only allow 64bit hosts to build VGICv3 2015-10-09 23:11:57 +01:00
linux memcg: drop unnecessary cold-path tests from __memcg_kmem_bypass() 2015-11-05 19:34:48 -08:00
math-emu
media media updates for v4.3-rc1 2015-09-11 16:42:39 -07:00
memory
misc
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-11-03 13:41:45 -05:00
pcmcia
ras
rdma Changes for 4.3-rc1 2015-09-19 20:04:11 -07:00
rxrpc
scsi Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-09-11 19:00:42 -07:00
soc IOMMU Updates for Linux v4.3 2015-09-08 17:22:35 -07:00
sound Merge remote-tracking branches 'asoc/fix/rt298', 'asoc/fix/sx', 'asoc/fix/wm8904' and 'asoc/fix/wm8962' into asoc-linus 2015-10-23 08:44:14 +09:00
target target: Propigate backend read-only to core_tpg_add_lun 2015-09-24 23:17:21 -07:00
trace sched/core: Fix trace_sched_switch() 2015-10-06 17:08:15 +02:00
uapi char/misc drivers for 4.4-rc1 2015-11-04 22:15:15 -08:00
video libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
xen xen/grant-table: Add an helper to iterate over a specific number of grants 2015-10-23 14:20:46 +01:00
Kbuild