The patch titled
Subject: proc: add cond_resched to /proc/kpage* read/write loop
has been added to the -mm tree. Its filename is
proc-add-cond_resched-to-proc-kpage-read-write-loop.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/proc-add-cond_resched-to-proc-kpage-read-write-loop.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/proc-add-cond_resched-to-proc-kpage-read-write-loop.patch
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------------------------------------------------------
From: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Subject: proc: add cond_resched to /proc/kpage* read/write loop
Reading/writing a /proc/kpage* file may take long on machines with a lot
of RAM installed.
Signed-off-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Suggested-by: Andres Lagar-Cavilla <andreslc@xxxxxxxxxx>
Reviewed-by: Andres Lagar-Cavilla <andreslc@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxx>
Cc: Greg Thelen <gthelen@xxxxxxxxxx>
Cc: Michel Lespinasse <walken@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/page.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff -puN fs/proc/page.c~proc-add-cond_resched-to-proc-kpage-read-write-loop fs/proc/page.c
--- a/fs/proc/page.c~proc-add-cond_resched-to-proc-kpage-read-write-loop
+++ a/fs/proc/page.c
@@ -58,6 +58,8 @@ static ssize_t kpagecount_read(struct fi
pfn++;
out++;
count -= KPMSIZE;
+
+ cond_resched();
}
*ppos += (char __user *)out - buf;
@@ -219,6 +221,8 @@ static ssize_t kpageflags_read(struct fi
pfn++;
out++;
count -= KPMSIZE;
+
+ cond_resched();
}
*ppos += (char __user *)out - buf;
@@ -267,6 +271,8 @@ static ssize_t kpagecgroup_read(struct f
pfn++;
out++;
count -= KPMSIZE;
+
+ cond_resched();
}
*ppos += (char __user *)out - buf;
@@ -421,6 +427,7 @@ static ssize_t kpageidle_read(struct fil
idle_bitmap = 0;
out++;
}
+ cond_resched();
}
*ppos += (char __user *)out - buf;
@@ -467,6 +474,7 @@ static ssize_t kpageidle_write(struct fi
put_page(page);
}
}
+ cond_resched();
}
*ppos += (const char __user *)in - buf;
_
Patches currently in -mm which might be from vdavydov@xxxxxxxxxxxxx are
memcg-export-struct-mem_cgroup.patch
memcg-export-struct-mem_cgroup-fix.patch
memcg-export-struct-mem_cgroup-fix-2.patch
memcg-get-rid-of-mem_cgroup_root_css-for-config_memcg.patch
memcg-get-rid-of-extern-for-functions-in-memcontrolh.patch
memcg-restructure-mem_cgroup_can_attach.patch
memcg-tcp_kmem-check-for-cg_proto-in-sock_update_memcg.patch
memcg-add-page_cgroup_ino-helper.patch
hwpoison-use-page_cgroup_ino-for-filtering-by-memcg.patch
memcg-zap-try_get_mem_cgroup_from_page.patch
proc-add-kpagecgroup-file.patch
mmu-notifier-add-clear_young-callback.patch
proc-add-kpageidle-file.patch
proc-export-idle-flag-via-kpageflags.patch
proc-add-cond_resched-to-proc-kpage-read-write-loop.patch
mm-vmscan-fix-the-page-state-calculation-in-too_many_isolated.patch
mm-swap-zswap-maybe_preload-refactoring.patch
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