tree 4a5dd6acac3e73049918c646bd977894335e5560
parent 2f30b1f9e1b612cdd1a17daeecf514229e8d6a5f
author David Rientjes <rientjes@google.com> 1253577870 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1253629067 -0700

flex_array: add flex_array_clear function

Add a new function to the flex_array API:

	int flex_array_clear(struct flex_array *fa,
				unsigned int element_nr)

This function will zero the element at element_nr in the flex_array.

Although this is equivalent to using flex_array_put() and passing a
pointer to zero'd memory, flex_array_clear() does not require such a
pointer to memory that would most likely need to be allocated on the
caller's stack which could be significantly large depending on
element_size.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>