diff options
| author | Nathan Scott <nathans@sgi.com> | 2006-09-28 11:03:27 +1000 |
|---|---|---|
| committer | Tim Shimmin <tes@sgi.com> | 2006-09-28 11:03:27 +1000 |
| commit | 77e4635ae191774526ed695482a151ac986f3806 (patch) | |
| tree | 42cfa03f913883cd7f3d53be19b7e8c25258ee2c /fs/xfs/linux-2.6 | |
| parent | 572d95f49f3652fffe8242c4498b85f4083e52ab (diff) | |
[XFS] Add a greedy allocation interface, allocating within a min/max size
range.
SGI-PV: 955302
SGI-Modid: xfs-linux-melb:xfs-kern:26803a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/linux-2.6')
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.c | 16 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.h | 3 |
2 files changed, 18 insertions, 1 deletions
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c index f77fe5c8fcc1..80b9340488e5 100644 --- a/fs/xfs/linux-2.6/kmem.c +++ b/fs/xfs/linux-2.6/kmem.c @@ -68,6 +68,22 @@ kmem_zalloc(size_t size, unsigned int __nocast flags) return ptr; } +void * +kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize, + unsigned int __nocast flags) +{ + void *ptr; + + while (!(ptr = kmem_zalloc(maxsize, flags))) { + if ((maxsize >>= 1) <= minsize) { + maxsize = minsize; + flags = KM_SLEEP; + } + } + *size = maxsize; + return ptr; +} + void kmem_free(void *ptr, size_t size) { diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h index 6d24274fb3cb..9ebabdf7829c 100644 --- a/fs/xfs/linux-2.6/kmem.h +++ b/fs/xfs/linux-2.6/kmem.h @@ -55,8 +55,9 @@ kmem_flags_convert(unsigned int __nocast flags) } extern void *kmem_alloc(size_t, unsigned int __nocast); -extern void *kmem_realloc(void *, size_t, size_t, unsigned int __nocast); extern void *kmem_zalloc(size_t, unsigned int __nocast); +extern void *kmem_zalloc_greedy(size_t *, size_t, size_t, unsigned int __nocast); +extern void *kmem_realloc(void *, size_t, size_t, unsigned int __nocast); extern void kmem_free(void *, size_t); /* |