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Revision 6326fec1122cde256bd2a8c63f2606e08e44ce1d authored by Nicholas Piggin on 25 December 2016, 03:00:29 UTC, committed by Linus Torvalds on 25 December 2016, 19:54:48 UTC 
mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked
 
A page is not added to the swap cache without being swap backed,
so PageSwapBacked mappings can use PG_owner_priv_1 for PageSwapCache.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Andrew Lutomirski <luto@kernel.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 7c0f6ba
Raw File
stackusage 
#!/bin/sh

outfile=""
now=`date +%s`

while [ $# -gt 0 ]
do
    case "$1" in
        -o)
	    outfile="$2"
	    shift 2;;
	-h)
	    echo "usage: $0 [-o outfile] <make options/args>"
	    exit 0;;
	*)  break;;
    esac
done

if [ -z "$outfile" ]
then
    outfile=`mktemp --tmpdir stackusage.$$.XXXX`
fi

KCFLAGS="${KCFLAGS} -fstack-usage" make "$@"

# Prepend directory name to file names, remove column information,
# make file:line/function/size/type properly tab-separated.
find . -name '*.su' -newermt "@${now}" -print |                     \
    xargs perl -MFile::Basename -pe                                 \
        '$d = dirname($ARGV); s#([^:]+:[0-9]+):[0-9]+:#$d/$1\t#;' | \
    sort -k3,3nr > "${outfile}"

echo "$0: output written to ${outfile}"
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