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xfs: factor all the kmalloc-or-vmalloc fallback allocations

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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 <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner
2013-09-02 20:53:00 +10:00
committed by Ben Myers
parent 2dc164f296
commit fdd3cceef4
7 changed files with 43 additions and 78 deletions
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9
fs/xfs/kmem.h
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@@ -57,17 +57,10 @@ kmem_flags_convert(xfs_km_flags_t flags)
extern void *kmem_alloc(size_t, xfs_km_flags_t);
extern void *kmem_zalloc(size_t, xfs_km_flags_t);
extern void *kmem_zalloc_large(size_t size, xfs_km_flags_t);
extern void *kmem_realloc(const void *, size_t, size_t, xfs_km_flags_t);
extern void kmem_free(const void *);
static inline void *kmem_zalloc_large(size_t size)
{
return vzalloc(size);
}
static inline void kmem_free_large(void *ptr)
{
vfree(ptr);
}
extern void *kmem_zalloc_greedy(size_t *, size_t, size_t);