The patch titled
Subject: checkpatch: mark kunmap() and kunmap_atomic() deprecated
has been added to the -mm mm-nonmm-unstable branch. Its filename is
checkpatch-mark-kunmap-and-kunmap_atomic-deprecated.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/checkpatch-mark-kunmap-and-kunmap_atomic-deprecated.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ira Weiny <ira.weiny@xxxxxxxxx>
Subject: checkpatch: mark kunmap() and kunmap_atomic() deprecated
Date: Thu, 29 Dec 2022 14:17:15 -0800
It was suggested by Fabio that kunmap() be marked deprecated in
checkpatch.[1] This did not seem necessary until an invalid conversion of
kmap_local_page() appeared in mainline.[2][3] The introduction of this bug
would have been flagged with kunmap() being marked deprecated.
Add kunmap() and kunmap_atomic() to checkpatch to help prevent further
confusion.
[1] https://lore.kernel.org/all/1884934.6tgchFWduM@suse/
[2] d406d26745ab ("cifs: skip alloc when request has no pages")
[3] https://lore.kernel.org/r/20221229-cifs-kmap-v1-1-c70d0e9a53eb@xxxxxxxxx
Link: https://lkml.kernel.org/r/20221229-kmap-checkpatch-v2-1-919fc4d4e3c2@xxxxxxxxx
Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Suggested-by: "Fabio M. De Francesco" <fmdefrancesco@xxxxxxxxx>
Acked-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/scripts/checkpatch.pl~checkpatch-mark-kunmap-and-kunmap_atomic-deprecated
+++ a/scripts/checkpatch.pl
@@ -823,7 +823,9 @@ our %deprecated_apis = (
"get_state_synchronize_sched" => "get_state_synchronize_rcu",
"cond_synchronize_sched" => "cond_synchronize_rcu",
"kmap" => "kmap_local_page",
+ "kunmap" => "kunmap_local",
"kmap_atomic" => "kmap_local_page",
+ "kunmap_atomic" => "kunmap_local",
);
#Create a search pattern for all these strings to speed up a loop below
_
Patches currently in -mm which might be from ira.weiny@xxxxxxxxx are
checkpatch-mark-kunmap-and-kunmap_atomic-deprecated.patch
