The patch titled
pagemap: return map count, not reference count, in /proc/kpagecount
has been added to the -mm tree. Its filename is
pagemap-return-map-count-not-reference-count-in-proc-kpagecount-v2-of-series.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/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: pagemap: return map count, not reference count, in /proc/kpagecount
From: "Thomas Tuttle" <ttuttle@xxxxxxxxxx>
Since pagemap is all about examining pages mapped into processes' memory
spaces, it makes sense for kpagecount to return the map counts, not the
reference counts.
Signed-off-by: Thomas Tuttle <ttuttle@xxxxxxxxxx>
Cc: Matt Mackall <mpm@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/proc_misc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/proc/proc_misc.c~pagemap-return-map-count-not-reference-count-in-proc-kpagecount-v2-of-series fs/proc/proc_misc.c
--- a/fs/proc/proc_misc.c~pagemap-return-map-count-not-reference-count-in-proc-kpagecount-v2-of-series
+++ a/fs/proc/proc_misc.c
@@ -742,7 +742,7 @@ static ssize_t kpagecount_read(struct fi
if (!ppage)
pcount = 0;
else
- pcount = atomic_read(&ppage->_count);
+ pcount = page_mapcount(ppage);
if (put_user(pcount, out++)) {
ret = -EFAULT;
_
Patches currently in -mm which might be from ttuttle@xxxxxxxxxx are
pagemap-fix-bug-in-add_to_pagemap-require-aligned-length-reads-of-proc-pid-pagemap-v2-of-series.patch
pagemap-fix-bug-in-add_to_pagemap-require-aligned-length-reads-of-proc-pid-pagemap-v2-of-series-checkpatch-fixes.patch
pagemap-return-map-count-not-reference-count-in-proc-kpagecount-v2-of-series.patch
pagemap-return-einval-not-eio-for-unaligned-reads-of-kpagecount-or-kpageflags-v2-of-series.patch
pagemap-add-documentation-for-pagemap.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
