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JBD2: jbd2 slab allocation cleanups

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JBD2: Replace slab allocations with page allocations

JBD2 allocate memory for committed_data and frozen_data from slab. However
JBD2 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 c089d490df
commit af1e76d6b3
4 changed files with 27 additions and 99 deletions
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18
include/linux/jbd2.h
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@@ -72,14 +72,22 @@ extern u8 jbd2_journal_enable_debug;
#endif
extern void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry);
extern void * jbd2_slab_alloc(size_t size, gfp_t flags);
extern void jbd2_slab_free(void *ptr, size_t size);
#define jbd_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), journal_oom_retry)
#define jbd_rep_kmalloc(size, flags) \
__jbd2_kmalloc(__FUNCTION__, (size), (flags), 1)
static inline void *jbd2_alloc(size_t size, gfp_t flags)
{
return (void *)__get_free_pages(flags, get_order(size));
}
static inline void jbd2_free(void *ptr, size_t size)
{
free_pages((unsigned long)ptr, get_order(size));
};
#define JBD2_MIN_JOURNAL_BLOCKS 1024
#ifdef __KERNEL__
@@ -959,12 +967,12 @@ void jbd2_journal_put_journal_head(struct journal_head *jh);
*/
extern struct kmem_cache *jbd2_handle_cache;
static inline handle_t *jbd_alloc_handle(gfp_t gfp_flags)
static inline handle_t *jbd2_alloc_handle(gfp_t gfp_flags)
{
return kmem_cache_alloc(jbd2_handle_cache, gfp_flags);
}
static inline void jbd_free_handle(handle_t *handle)
static inline void jbd2_free_handle(handle_t *handle)
{
kmem_cache_free(jbd2_handle_cache, handle);
}