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JBD: JBD slab allocation cleanups

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JBD: Replace slab allocations with page allocations

JBD allocate memory for committed_data and frozen_data from slab. However
JBD should not pass slab pages down to the block layer. Use page allocator pages instead. This will also prepare JBD for the large blocksize patchset.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
This commit is contained in:
Mingming Cao
2007-10-16 18:38:25 -04:00
committed by Theodore Ts'o
parent d85714d81c
commit c089d490df
4 changed files with 21 additions and 94 deletions
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13
include/linux/jbd.h
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@@ -73,14 +73,21 @@ extern int journal_enable_debug;
#endif
extern void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
extern void * jbd_slab_alloc(size_t size, gfp_t flags);
extern void jbd_slab_free(void *ptr, size_t size);
#define jbd_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
#define jbd_rep_kmalloc(size, flags) \
__jbd_kmalloc(__FUNCTION__, (size), (flags), 1)
static inline void *jbd_alloc(size_t size, gfp_t flags)
{
return (void *)__get_free_pages(flags, get_order(size));
}
static inline void jbd_free(void *ptr, size_t size)
{
free_pages((unsigned long)ptr, get_order(size));
};
#define JFS_MIN_JOURNAL_BLOCKS 1024
#ifdef __KERNEL__