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[PATCH] Allow NULL pointers in percpu_free

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The patch (as824b) makes percpu_free() ignore NULL arguments, as one would
expect for a deallocation routine.  (Note that free_percpu is #defined as
percpu_free in include/linux/percpu.h.) A few callers are updated to remove
now-unneeded tests for NULL.  A few other callers already seem to assume
that passing a NULL pointer to percpu_free() is okay!

The patch also removes an unnecessary NULL check in percpu_depopulate().

Signed-off-by: Alan Stern <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alan Stern 2006-12-06 20:32:37 -08:00 • committed by Linus Torvalds
commit a120586873
4 changed files with 10 additions and 14 deletions
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6
net/ipv6/af_inet6.c
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@ -720,10 +720,8 @@ snmp6_mib_free(void *ptr[2])
{
if (ptr == NULL)
return;
if (ptr[0])
free_percpu(ptr[0]);
if (ptr[1])
free_percpu(ptr[1]);
free_percpu(ptr[0]);
free_percpu(ptr[1]);
ptr[0] = ptr[1] = NULL;
}