From fdd3cceef46f2c18c618669cfae5c0f47d6982f9 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Mon, 2 Sep 2013 20:53:00 +1000 Subject: xfs: factor all the kmalloc-or-vmalloc fallback allocations We have quite a few places now where we do: x = kmem_zalloc(large size) if (!x) x = kmem_zalloc_large(large size) and do a similar dance when freeing the memory. kmem_free() already does the correct freeing dance, and kmem_zalloc_large() is only ever called in these constructs, so just factor it all into kmem_zalloc_large() and kmem_free(). Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers --- fs/xfs/kmem.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'fs/xfs/kmem.c') diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c index 4a7286c1dc80..a02cfb9e3bce 100644 --- a/fs/xfs/kmem.c +++ b/fs/xfs/kmem.c @@ -27,8 +27,6 @@ /* * Greedy allocation. May fail and may return vmalloced memory. - * - * Must be freed using kmem_free_large. */ void * kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize) @@ -36,7 +34,7 @@ kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize) void *ptr; size_t kmsize = maxsize; - while (!(ptr = kmem_zalloc_large(kmsize))) { + while (!(ptr = vzalloc(kmsize))) { if ((kmsize >>= 1) <= minsize) kmsize = minsize; } @@ -75,6 +73,17 @@ kmem_zalloc(size_t size, xfs_km_flags_t flags) return ptr; } +void * +kmem_zalloc_large(size_t size, xfs_km_flags_t flags) +{ + void *ptr; + + ptr = kmem_zalloc(size, flags | KM_MAYFAIL); + if (ptr) + return ptr; + return vzalloc(size); +} + void kmem_free(const void *ptr) { -- cgit v1.2.3