Revision 4759d386d55fef452d692bf101167914437e848e authored by Linus Torvalds on 01 January 2017, 20:27:05 UTC, committed by Linus Torvalds on 01 January 2017, 20:27:05 UTC
Pull DAX updates from Dan Williams: "The completion of Jan's DAX work for 4.10. As I mentioned in the libnvdimm-for-4.10 pull request, these are some final fixes for the DAX dirty-cacheline-tracking invalidation work that was merged through the -mm, ext4, and xfs trees in -rc1. These patches were prepared prior to the merge window, but we waited for 4.10-rc1 to have a stable merge base after all the prerequisites were merged. Quoting Jan on the overall changes in these patches: "So I'd like all these 6 patches to go for rc2. The first three patches fix invalidation of exceptional DAX entries (a bug which is there for a long time) - without these patches data loss can occur on power failure even though user called fsync(2). The other three patches change locking of DAX faults so that ->iomap_begin() is called in a more relaxed locking context and we are safe to start a transaction there for ext4" These have received a build success notification from the kbuild robot, and pass the latest libnvdimm unit tests. There have not been any -next releases since -rc1, so they have not appeared there" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: ext4: Simplify DAX fault path dax: Call ->iomap_begin without entry lock during dax fault dax: Finish fault completely when loading holes dax: Avoid page invalidation races and unnecessary radix tree traversals mm: Invalidate DAX radix tree entries only if appropriate ext2: Return BH_New buffers for zeroed blocks
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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