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apparmor: no need to delay vfree() 

vfree() can be called from interrupt contexts now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
This commit is contained in:
Al Viro 2013-05-06 03:10:35 +01:00 committed by James Morris
parent bd71164abc
commit b5b3ee6c9c
1 changed files with 3 additions and 21 deletions
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24
security/apparmor/lib.c
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@ -110,19 +110,6 @@ void *__aa_kvmalloc(size_t size, gfp_t flags)
return buffer; return buffer;
} }
/**
* do_vfree - workqueue routine for freeing vmalloced memory
* @work: data to be freed
*
* The work_struct is overlaid to the data being freed, as at the point
* the work is scheduled the data is no longer valid, be its freeing
* needs to be delayed until safe.
*/
static void do_vfree(struct work_struct *work)
{
vfree(work);
}
/** /**
* kvfree - free an allocation do by kvmalloc * kvfree - free an allocation do by kvmalloc
* @buffer: buffer to free (MAYBE_NULL) * @buffer: buffer to free (MAYBE_NULL)
@ -131,13 +118,8 @@ static void do_vfree(struct work_struct *work)
*/ */
void kvfree(void *buffer) void kvfree(void *buffer)
{ {
if (is_vmalloc_addr(buffer)) { if (is_vmalloc_addr(buffer))
/* Data is no longer valid so just use the allocated space vfree(buffer);
* as the work_struct else
*/
struct work_struct *work = (struct work_struct *) buffer;
INIT_WORK(work, do_vfree);
schedule_work(work);
} else
kfree(buffer); kfree(buffer);
} }