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| author | Eric Paris <eparis@redhat.com> | 2010-08-09 17:20:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:09 -0700 |
| commit | ea98eed9bcb62d1319db8b1210712c6a110a886c (patch) | |
| tree | fa394336975862de7a1ca99f890eac4d3098356f /include/linux/flex_array.h | |
| parent | 559b140a36613bb5b63f258b2ad833dad8cd11d9 (diff) | |
| download | lwn-ea98eed9bcb62d1319db8b1210712c6a110a886c.tar.gz lwn-ea98eed9bcb62d1319db8b1210712c6a110a886c.zip | |
flex_array: add helpers to get and put to make pointers easy to use
Getting and putting arrays of pointers with flex arrays is a PITA. You
have to remember to pass &ptr to the _put and you have to do weird and
wacky casting to get the ptr back from the _get. Add two functions
flex_array_get_ptr() and flex_array_put_ptr() to handle all of the magic.
[akpm@linux-foundation.org: simplification suggested by Joe]
Signed-off-by: Eric Paris <eparis@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Cc: Joe Perches <joe@perches.com>
Cc: James Morris <jmorris@namei.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/flex_array.h')
| -rw-r--r-- | include/linux/flex_array.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/flex_array.h b/include/linux/flex_array.h index 1d747f72298b..631b77f2ac70 100644 --- a/include/linux/flex_array.h +++ b/include/linux/flex_array.h @@ -70,4 +70,9 @@ int flex_array_clear(struct flex_array *fa, unsigned int element_nr); void *flex_array_get(struct flex_array *fa, unsigned int element_nr); int flex_array_shrink(struct flex_array *fa); +#define flex_array_put_ptr(fa, nr, src, gfp) \ + flex_array_put(fa, nr, &(void *)(src), gfp) + +void *flex_array_get_ptr(struct flex_array *fa, unsigned int element_nr); + #endif /* _FLEX_ARRAY_H */ |