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checkpatch: add warning of future __GFP_NOFAIL use

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gfp.h and page_alloc.c already specify that __GFP_NOFAIL is deprecated and
no new users should be added.

Add a warning to checkpatch to catch this.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2014-01-23 15:54:42 -08:00 • committed by Linus Torvalds
commit 7e4915e789
1 changed files with 6 additions and 0 deletions
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6
scripts/checkpatch.pl
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@ -4113,6 +4113,12 @@ sub process {
"$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
}
# check for GFP_NOWAIT use
if ($line =~ /\b__GFP_NOFAIL\b/) {
WARN("__GFP_NOFAIL",
"Use of __GFP_NOFAIL is deprecated, no new users should be added\n" . $herecurr);
}
# check for multiple semicolons
if ($line =~ /;\s*;\s*$/) {
if (WARN("ONE_SEMICOLON",