mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-28 07:10:02 +00:00
255d11bc91
Impact: cleanup
mm/failslab.c depends on slab.h without including it:
CC mm/failslab.o
mm/failslab.c: In function ‘should_failslab’:
mm/failslab.c:16: error: ‘__GFP_NOFAIL’ undeclared (first use in this function)
mm/failslab.c:16: error: (Each undeclared identifier is reported only once
mm/failslab.c:16: error: for each function it appears in.)
mm/failslab.c:19: error: ‘__GFP_WAIT’ undeclared (first use in this function)
make[1]: *** [mm/failslab.o] Error 1
make: *** [mm] Error 2
It gets included implicitly currently - but this will not be the
case with upcoming kmemtrace changes.
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <1237888761.25315.69.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
#include <linux/fault-inject.h>
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#include <linux/gfp.h>
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static struct {
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struct fault_attr attr;
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u32 ignore_gfp_wait;
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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struct dentry *ignore_gfp_wait_file;
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#endif
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} failslab = {
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.attr = FAULT_ATTR_INITIALIZER,
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.ignore_gfp_wait = 1,
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};
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bool should_failslab(size_t size, gfp_t gfpflags)
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{
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if (gfpflags & __GFP_NOFAIL)
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return false;
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if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT))
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return false;
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return should_fail(&failslab.attr, size);
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}
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static int __init setup_failslab(char *str)
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{
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return setup_fault_attr(&failslab.attr, str);
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}
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__setup("failslab=", setup_failslab);
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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static int __init failslab_debugfs_init(void)
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{
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mode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
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struct dentry *dir;
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int err;
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err = init_fault_attr_dentries(&failslab.attr, "failslab");
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if (err)
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return err;
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dir = failslab.attr.dentries.dir;
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failslab.ignore_gfp_wait_file =
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debugfs_create_bool("ignore-gfp-wait", mode, dir,
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&failslab.ignore_gfp_wait);
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if (!failslab.ignore_gfp_wait_file) {
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err = -ENOMEM;
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debugfs_remove(failslab.ignore_gfp_wait_file);
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cleanup_fault_attr_dentries(&failslab.attr);
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}
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return err;
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}
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late_initcall(failslab_debugfs_init);
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#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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