The patch titled
Subject: MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v7 fix fix fix
has been removed from the -mm tree. Its filename was
mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix.patch
This patch was dropped because it was folded into mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7.patch
------------------------------------------------------
From: David Rientjes <rientjes@xxxxxxxxxx>
Subject: MM: Support more pagesizes for MAP_HUGETLB/SHM_HUGETLB v7 fix fix fix
On Fri, 9 Nov 2012, Randy Dunlap wrote:
> on x86_64:
>
> In file included from mm/mprotect.c:13:0:
> include/linux/shm.h:57:20: error: redefinition of 'do_shmat'
> include/linux/shm.h:57:20: note: previous definition of 'do_shmat' was here
> include/linux/shm.h:63:19: error: redefinition of 'is_file_shm_hugepages'
> include/linux/shm.h:63:19: note: previous definition of 'is_file_shm_hugepages' was here
> include/linux/shm.h:67:20: error: redefinition of 'exit_shm'
> include/linux/shm.h:67:20: note: previous definition of 'exit_shm' was here
>
> In file included from include/linux/hugetlb.h:16:0,
> from mm/mmap.c:23:
> include/linux/shm.h:57:20: error: redefinition of 'do_shmat'
> include/linux/shm.h:57:20: note: previous definition of 'do_shmat' was here
> include/linux/shm.h:63:19: error: redefinition of 'is_file_shm_hugepages'
> include/linux/shm.h:63:19: note: previous definition of 'is_file_shm_hugepages' was here
> include/linux/shm.h:67:20: error: redefinition of 'exit_shm'
> include/linux/shm.h:67:20: note: previous definition of 'exit_shm' was here
> make[2]: *** [mm/mprotect.o] Error 1
>
This is an elusive one, I couldn't reproduce it with master. This appears
to only happen on the akpm branch, correct?
It happens because of e37c64a9751a ("mm: support more pagesizes for
MAP_HUGETLB/SHM_HUGETLB") adds a spurious "#endif" to include/linux/shm.h
and gets reverted in master by 359078d82a20 ("Revert "mm: support more
pagesizes for MAP_HUGETLB/SHM_HUGETLB"") because of another build failure
that Stephen reports on November 8:
mm/mmap.c: In function 'SYSC_mmap_pgoff':
mm/mmap.c:1271:15: error: 'MAP_HUGE_SHIFT' undeclared (first use in this function)
mm/mmap.c:1271:15: note: each undeclared identifier is reported only once for each function it appears in
mm/mmap.c:1271:33: error: 'MAP_HUGE_MASK' undeclared (first use in this function)
I think the best bet would be to merge the following in -mm and then let
Stephen revert it in master again if his build error persists for powerpc:
mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix
Fix the build:
include/linux/shm.h:57:20: error: redefinition of 'do_shmat'
include/linux/shm.h:57:20: note: previous definition of 'do_shmat' was here
include/linux/shm.h:63:19: error: redefinition of 'is_file_shm_hugepages'
include/linux/shm.h:63:19: note: previous definition of 'is_file_shm_hugepages' was here
include/linux/shm.h:67:20: error: redefinition of 'exit_shm'
include/linux/shm.h:67:20: note: previous definition of 'exit_shm' was here
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/shm.h | 4 ----
1 file changed, 4 deletions(-)
diff -puN include/linux/shm.h~mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix include/linux/shm.h
--- a/include/linux/shm.h~mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix
+++ a/include/linux/shm.h
@@ -23,8 +23,6 @@ struct shmid_kernel /* private to the ke
struct task_struct *shm_creator;
};
-#endif
-
/* shm_mode upper byte flags */
#define SHM_DEST 01000 /* segment will be destroyed on last detach */
#define SHM_LOCKED 02000 /* segment will not be swapped */
@@ -46,8 +44,6 @@ struct shmid_kernel /* private to the ke
#define SHM_HUGE_2MB (21 << SHM_HUGE_SHIFT)
#define SHM_HUGE_1GB (30 << SHM_HUGE_SHIFT)
-#ifdef __KERNEL__
-
#ifdef CONFIG_SYSVIPC
long do_shmat(int shmid, char __user *shmaddr, int shmflg, unsigned long *addr,
unsigned long shmlba);
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
mm-memcg-make-mem_cgroup_out_of_memory-static.patch
mm-use-is_enabledconfig_numa-instead-of-numa_build.patch
mm-use-is_enabledconfig_compaction-instead-of-compaction_build.patch
thp-clean-up-__collapse_huge_page_isolate.patch
memory-hotplug-suppress-device-memoryx-does-not-have-a-release-function-warning.patch
memory-hotplug-skip-hwpoisoned-page-when-offlining-pages.patch
memory-hotplug-update-mce_bad_pages-when-removing-the-memory.patch
memory-hotplug-auto-offline-page_cgroup-when-onlining-memory-block-failed.patch
memory-hotplug-fix-nr_free_pages-mismatch.patch
numa-convert-static-memory-to-dynamically-allocated-memory-for-per-node-device.patch
memory-hotplug-suppress-device-nodex-does-not-have-a-release-function-warning.patch
memory-hotplug-mm-sparsec-clear-the-memory-to-store-struct-page.patch
memory-hotplug-allocate-zones-pcp-before-onlining-pages.patch
memory_hotplug-fix-possible-incorrect-node_states.patch
slub-hotplug-ignore-unrelated-nodes-hot-adding-and-hot-removing.patch
mm-oom-allow-exiting-threads-to-have-access-to-memory-reserves.patch
mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7.patch
mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix-fix.patch
mm-support-more-pagesizes-for-map_hugetlb-shm_hugetlb-v7-fix-fix-fix-fix-checkpatch-fixes.patch
mm-introduce-a-common-interface-for-balloon-pages-mobility-fix.patch
mm-mempolicy-remove-duplicate-code.patch
mm-cleanup-register_node.patch
mm-oom-change-type-of-oom_score_adj-to-short.patch
mm-oom-fix-race-when-specifying-a-thread-as-the-oom-origin.patch
drivers-base-nodec-cleanup-node_state_attr.patch
mm-memory-hotplug-dynamic-configure-movable-memory-and-portion-memory.patch
memory_hotplug-handle-empty-zone-when-online_movable-online_kernel.patch
memory_hotplug-ensure-every-online-node-has-normal-memory.patch
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