The patch titled
Subject: mm-compaction-fix-an-undefined-behaviour-fix
has been added to the -mm tree. Its filename is
mm-compaction-fix-an-undefined-behaviour-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-fix-an-undefined-behaviour-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-fix-an-undefined-behaviour-fix.patch
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*** 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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm-compaction-fix-an-undefined-behaviour-fix
code cleanup
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Qian Cai <cai@xxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/compaction.c~mm-compaction-fix-an-undefined-behaviour-fix
+++ a/mm/compaction.c
@@ -1157,9 +1157,9 @@ static bool suitable_migration_target(st
static inline unsigned int
freelist_scan_limit(struct compact_control *cc)
{
- return (COMPACT_CLUSTER_MAX >>
- min((unsigned short)(BITS_PER_LONG - 1), cc->fast_search_fail))
- + 1;
+ unsigned short shift = BITS_PER_LONG - 1;
+
+ return (COMPACT_CLUSTER_MAX >> min(shift, cc->fast_search_fail)) + 1;
}
/*
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
kmemleak-skip-scanning-holes-in-the-bss-section-fix.patch
ocfs2-clear-zero-in-unaligned-direct-io-checkpatch-fixes.patch
mm.patch
userfaultfd-sysctl-add-vmunprivileged_userfaultfd-fix.patch
mm-compaction-fix-an-undefined-behaviour-fix.patch
psi-introduce-psi-monitor-fix.patch
psi-introduce-psi-monitor-fix-fix.patch
psi-introduce-psi-monitor-fix-3.patch
mm-add-probe_user_read-fix.patch
mm-maintain-randomization-of-page-free-lists-checkpatch-fixes.patch
fs-binfmt_elfc-remove-unneeded-initialization-of-mm-start_stack.patch
linux-next-rejects.patch
scripts-atomic-check-atomicssh-dont-assume-that-scripts-are-executable.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
