+ mm-madvise-madv_dontneed_locked-fix.patch added to -mm tree

+ mm-madvise-madv_dontneed_locked-fix.patch added to -mm tree

[Andrew Morton]

The patch titled
     Subject: mm-madvise-madv_dontneed_locked-fix
has been added to the -mm tree.  Its filename is
     mm-madvise-madv_dontneed_locked-fix.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-madvise-madv_dontneed_locked-fix.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-madvise-madv_dontneed_locked-fix.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: mm-madvise-madv_dontneed_locked-fix

On MiPS:
mm/madvise.c:55:7: error: 'MADV_DONTNEED_LOCKED' undeclared (first use in this function); did you mean 'MADV_DONTNEED'?

Define MADV_DONTNEED_LOCKED on archs that don't use the common mman.h

Link: https://lkml.kernel.org/r/YiY2KYyjsCaANwo0@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/alpha/include/uapi/asm/mman.h  |    2 ++
 arch/mips/include/uapi/asm/mman.h   |    2 ++
 arch/parisc/include/uapi/asm/mman.h |    2 ++
 arch/xtensa/include/uapi/asm/mman.h |    2 ++
 4 files changed, 8 insertions(+)

--- a/arch/alpha/include/uapi/asm/mman.h~mm-madvise-madv_dontneed_locked-fix
+++ a/arch/alpha/include/uapi/asm/mman.h
@@ -74,6 +74,8 @@
 #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
 #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
 
+#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
+
 /* compatibility flags */
 #define MAP_FILE	0
 
--- a/arch/mips/include/uapi/asm/mman.h~mm-madvise-madv_dontneed_locked-fix
+++ a/arch/mips/include/uapi/asm/mman.h
@@ -101,6 +101,8 @@
 #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
 #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
 
+#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
+
 /* compatibility flags */
 #define MAP_FILE	0
 
--- a/arch/parisc/include/uapi/asm/mman.h~mm-madvise-madv_dontneed_locked-fix
+++ a/arch/parisc/include/uapi/asm/mman.h
@@ -55,6 +55,8 @@
 #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
 #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
 
+#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
+
 #define MADV_MERGEABLE   65		/* KSM may merge identical pages */
 #define MADV_UNMERGEABLE 66		/* KSM may not merge identical pages */
 
--- a/arch/xtensa/include/uapi/asm/mman.h~mm-madvise-madv_dontneed_locked-fix
+++ a/arch/xtensa/include/uapi/asm/mman.h
@@ -109,6 +109,8 @@
 #define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
 #define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
 
+#define MADV_DONTNEED_LOCKED	24	/* like DONTNEED, but drop locked pages too */
+
 /* compatibility flags */
 #define MAP_FILE	0
 
_

Patches currently in -mm which might be from hannes@cmpxchg.org are

mm-memcg-opencode-the-inner-part-of-obj_cgroup_uncharge_pages-in-drain_obj_stock.patch
mm-page_io-fix-psi-memory-pressure-error-on-cold-swapins.patch
mm-madvise-madv_dontneed_locked.patch
mm-madvise-madv_dontneed_locked-fix.patch