The patch titled
Subject: tmpfs: enable NOSEC optimization
has been added to the -mm tree. Its filename is
tmpfs-enable-nosec-optimization.patch
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------------------------------------------------------
From: Hugh Dickins <hughd@xxxxxxxxxx>
Subject: tmpfs: enable NOSEC optimization
Let tmpfs into the NOSEC optimization (avoiding file_remove_suid()
overhead on most common writes): set MS_NOSEC on its superblocks.
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/shmem.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/shmem.c~tmpfs-enable-nosec-optimization mm/shmem.c
--- a/mm/shmem.c~tmpfs-enable-nosec-optimization
+++ a/mm/shmem.c
@@ -2361,6 +2361,7 @@ int shmem_fill_super(struct super_block
}
}
sb->s_export_op = &shmem_export_ops;
+ sb->s_flags |= MS_NOSEC;
#else
sb->s_flags |= MS_NOUSER;
#endif
_
Subject: Subject: tmpfs: enable NOSEC optimization
Patches currently in -mm which might be from hughd@xxxxxxxxxx are
linux-next.patch
mm-remove-swap-token-code.patch
mm-vmscan-remove-lumpy-reclaim.patch
mm-vmscan-do-not-stall-on-writeback-during-memory-compaction.patch
mm-vmscan-remove-reclaim_mode_t.patch
mm-mmapc-find_vma-remove-unnecessary-ifmm-check.patch
mm-mmapc-find_vma-remove-unnecessary-ifmm-check-fix.patch
mm-fork-fix-overflow-in-vma-length-when-copying-mmap-on-clone.patch
mm-correctly-synchronize-rss-counters-at-exit-exec.patch
bug-introduce-build_bug_on_invalid-macro.patch
bug-completely-remove-code-generated-by-disabled-vm_bug_on.patch
shmem-replace-page-if-mapping-excludes-its-zone.patch
tmpfs-enable-nosec-optimization.patch
tmpfs-optimize-clearing-when-writing.patch
tmpfs-support-fallocate-falloc_fl_punch_hole.patch
mm-fs-route-madv_remove-to-falloc_fl_punch_hole.patch
mm-fs-remove-truncate_range.patch
tmpfs-support-fallocate-preallocation.patch
tmpfs-undo-fallocation-on-failure.patch
tmpfs-quit-when-fallocate-fills-memory.patch
tmpfs-support-seek_data-and-seek_hole.patch
memcg-fix-change-behavior-of-shared-anon-at-moving-task.patch
memcg-swap-mem_cgroup_move_swap_account-never-needs-fixup.patch
memcg-swap-use-mem_cgroup_uncharge_swap.patch
mm-memcg-scanning_global_lru-means-mem_cgroup_disabled.patch
mm-memcg-move-reclaim_stat-into-lruvec.patch
mm-push-lru-index-into-shrink_active_list.patch
mm-push-lru-index-into-shrink_active_list-fix.patch
mm-mark-mm-inline-functions-as-__always_inline.patch
mm-remove-lru-type-checks-from-__isolate_lru_page.patch
mm-memcg-kill-mem_cgroup_lru_del.patch
mm-memcg-use-vm_swappiness-from-target-memory-cgroup.patch
memcg-add-mlock-statistic-in-memorystat.patch
memcg-add-mlock-statistic-in-memorystat-fix.patch
mm-vmscan-store-priority-in-struct-scan_control.patch
mm-add-link-from-struct-lruvec-to-struct-zone.patch
mm-vmscan-push-lruvec-pointer-into-isolate_lru_pages.patch
mm-vmscan-push-zone-pointer-into-shrink_page_list.patch
mm-vmscan-remove-update_isolated_counts.patch
mm-vmscan-push-lruvec-pointer-into-putback_inactive_pages.patch
mm-vmscan-replace-zone_nr_lru_pages-with-get_lruvec_size.patch
mm-vmscan-push-lruvec-pointer-into-inactive_list_is_low.patch
mm-vmscan-push-lruvec-pointer-into-shrink_list.patch
mm-vmscan-push-lruvec-pointer-into-get_scan_count.patch
mm-vmscan-push-lruvec-pointer-into-should_continue_reclaim.patch
mm-vmscan-kill-struct-mem_cgroup_zone.patch
mm-huge_memoryc-use-lockdep_assert_held.patch
proc-clean-up-proc-pid-environ-handling.patch
proc-remove-mm_for_maps.patch
proc-use-mm_access-instead-of-ptrace_may_access.patch
proc-report-file-anon-bit-in-proc-pid-pagemap.patch
proc-use-is_err_or_null.patch
fork-call-complete_vfork_done-after-clearing-child_tid-and-flushing-rss-counters.patch
prio_tree-debugging-patch.patch
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