The patch titled
Subject: memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix
has been added to the -mm tree. Its filename is
memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix
add pglist_data.kswapd locking comments
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mmzone.h | 2 +-
mm/vmscan.c | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff -puN include/linux/mmzone.h~memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix include/linux/mmzone.h
--- a/include/linux/mmzone.h~memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix
+++ a/include/linux/mmzone.h
@@ -693,7 +693,7 @@ typedef struct pglist_data {
range, including holes */
int node_id;
wait_queue_head_t kswapd_wait;
- struct task_struct *kswapd;
+ struct task_struct *kswapd; /* Protected by lock_memory_hotplug() */
int kswapd_max_order;
enum zone_type classzone_idx;
} pg_data_t;
diff -puN mm/vmscan.c~memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix mm/vmscan.c
--- a/mm/vmscan.c~memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix
+++ a/mm/vmscan.c
@@ -2955,7 +2955,8 @@ int kswapd_run(int nid)
}
/*
- * Called by memory hotplug when all memory in a node is offlined.
+ * Called by memory hotplug when all memory in a node is offlined. Caller must
+ * hold lock_memory_hotplug().
*/
void kswapd_stop(int nid)
{
_
Subject: Subject: memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
linux-next.patch
i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
drivers-block-nvmec-stop-breaking-my-i386-build.patch
mm-fix-slab-page-_count-corruption-when-using-slub.patch
memory-hotplug-fix-invalid-memory-access-caused-by-stale-kswapd-pointer-fix.patch
tmpfs-implement-numa-node-interleaving-fix.patch
arch-x86-platform-iris-irisc-register-a-platform-device-and-a-platform-driver.patch
hfs-get-rid-of-hfs_sync_super-checkpatch-fixes.patch
mm.patch
mm-make-vb_alloc-more-foolproof-fix.patch
mm-compaction-handle-incorrect-migrate_unmovable-type-pageblocks.patch
mm-compaction-handle-incorrect-migrate_unmovable-type-pageblocks-fix.patch
memcg-prevent-from-oom-with-too-many-dirty-pages-fix.patch
mm-memblockc-memblock_double_array-cosmetic-cleanups.patch
avr32-mm-faultc-port-oom-changes-to-do_page_fault-fix.patch
nmi-watchdog-fix-for-lockup-detector-breakage-on-resume.patch
kmsg-dev-kmsg-properly-return-possible-copy_from_user-failure.patch
btrfs-use-printk_get_level-and-printk_skip_level-add-__printf-fix-fallout-fix.patch
btrfs-use-printk_get_level-and-printk_skip_level-add-__printf-fix-fallout-checkpatch-fixes.patch
backlight-l4f00242t03-use-devm_gpio_request_one-fix.patch
string-introduce-memweight-fix.patch
kmod-avoid-deadlock-from-recursive-kmod-call.patch
fork-use-vma_pages-to-simplify-the-code-fix.patch
fs-cachefiles-add-support-for-large-files-in-filesystem-caching-fix.patch
notify_change-check-that-i_mutex-is-held.patch
journal_add_journal_head-debug.patch
mutex-subsystem-synchro-test-module-fix.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
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