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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 <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Rientjes authored and Linus Torvalds committed 2014-01-23 16:36:57 -08:00
1 parent d2e248e7b0
commit 7e4915e789
1 file changed
+6
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scripts/checkpatch.pl
+6
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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",