* [PATCH] proc: Avoid unused variable warning in pagemap_pmd_range()
@ 2022-02-07 17:10 Nathan Chancellor
0 siblings, 0 replies; only message in thread
From: Nathan Chancellor @ 2022-02-07 17:10 UTC (permalink / raw)
To: Andrew Morton
Cc: Yang Shi, David Hildenbrand, linux-kernel, linux-mm, Nathan Chancellor
When building with CONFIG_TRANSPARENT_HUGEPAGE=n, there is a warning
about migration being unused:
fs/proc/task_mmu.c:1444:7: warning: unused variable 'migration' [-Wunused-variable]
bool migration = false;
^
1 warning generated.
Move the ifdef preprocessor directive up to include migration so it is
only included in the file when it is used.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
This is a fix for fs-proc-task_mmuc-dont-read-mapcount-for-migration-entry-v4.patch.
fs/proc/task_mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index bc2f46033231..6e97ed775074 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1441,9 +1441,9 @@ static int pagemap_pmd_range(pmd_t *pmdp, unsigned long addr, unsigned long end,
spinlock_t *ptl;
pte_t *pte, *orig_pte;
int err = 0;
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
bool migration = false;
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
ptl = pmd_trans_huge_lock(pmdp, vma);
if (ptl) {
u64 flags = 0, frame = 0;
base-commit: b3c0a155ef77550d48f6eb7c6fdd6075764a5622
--
2.35.1
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2022-02-07 17:11 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-02-07 17:10 [PATCH] proc: Avoid unused variable warning in pagemap_pmd_range() Nathan Chancellor
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).