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9d11ea9f16
Since transparent huge pages, checking whether memory cgroups are below their limits is no longer enough, but the actual amount of chargeable space is important. To not have more than one limit-checking interface, replace memory_cgroup_check_under_limit() and memory_cgroup_check_margin() with a single memory_cgroup_margin() that returns the chargeable space and leaves the comparison to the callsite. Soft limits are now checked the other way round, by using the already existing function that returns the amount by which soft limits are exceeded: res_counter_soft_limit_excess(). Also remove all the corresponding functions on the res_counter side that are now no longer used. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Minchan Kim <minchan.kim@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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