summaryrefslogtreecommitdiff
path: root/fs/ext4/mballoc.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ext4/mballoc.h')
-rw-r--r--fs/ext4/mballoc.h71
1 files changed, 8 insertions, 63 deletions
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index b5dff1fff1e5..10a2921baf14 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -20,6 +20,7 @@
#include <linux/version.h>
#include <linux/blkdev.h>
#include <linux/marker.h>
+#include <linux/mutex.h>
#include "ext4_jbd2.h"
#include "ext4.h"
#include "group.h"
@@ -98,9 +99,6 @@
*/
#define MB_DEFAULT_GROUP_PREALLOC 512
-static struct kmem_cache *ext4_pspace_cachep;
-static struct kmem_cache *ext4_ac_cachep;
-static struct kmem_cache *ext4_free_ext_cachep;
struct ext4_free_data {
/* this links the free block information from group_info */
@@ -120,26 +118,6 @@ struct ext4_free_data {
tid_t t_tid;
};
-struct ext4_group_info {
- unsigned long bb_state;
- struct rb_root bb_free_root;
- unsigned short bb_first_free;
- unsigned short bb_free;
- unsigned short bb_fragments;
- struct list_head bb_prealloc_list;
-#ifdef DOUBLE_CHECK
- void *bb_bitmap;
-#endif
- unsigned short bb_counters[];
-};
-
-#define EXT4_GROUP_INFO_NEED_INIT_BIT 0
-#define EXT4_GROUP_INFO_LOCKED_BIT 1
-
-#define EXT4_MB_GRP_NEED_INIT(grp) \
- (test_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &((grp)->bb_state)))
-
-
struct ext4_prealloc_space {
struct list_head pa_inode_list;
struct list_head pa_group_list;
@@ -217,6 +195,11 @@ struct ext4_allocation_context {
__u8 ac_op; /* operation, for history only */
struct page *ac_bitmap_page;
struct page *ac_buddy_page;
+ /*
+ * pointer to the held semaphore upon successful
+ * block allocation
+ */
+ struct rw_semaphore *alloc_semp;
struct ext4_prealloc_space *ac_pa;
struct ext4_locality_group *ac_lg;
};
@@ -250,6 +233,7 @@ struct ext4_buddy {
struct super_block *bd_sb;
__u16 bd_blkbits;
ext4_group_t bd_group;
+ struct rw_semaphore *alloc_semp;
};
#define EXT4_MB_BITMAP(e4b) ((e4b)->bd_bitmap)
#define EXT4_MB_BUDDY(e4b) ((e4b)->bd_buddy)
@@ -259,51 +243,12 @@ static inline void ext4_mb_store_history(struct ext4_allocation_context *ac)
{
return;
}
-#else
-static void ext4_mb_store_history(struct ext4_allocation_context *ac);
#endif
#define in_range(b, first, len) ((b) >= (first) && (b) <= (first) + (len) - 1)
struct buffer_head *read_block_bitmap(struct super_block *, ext4_group_t);
-
-static void ext4_mb_generate_from_pa(struct super_block *sb, void *bitmap,
- ext4_group_t group);
-static void ext4_mb_return_to_preallocation(struct inode *inode,
- struct ext4_buddy *e4b, sector_t block,
- int count);
-static void ext4_mb_put_pa(struct ext4_allocation_context *,
- struct super_block *, struct ext4_prealloc_space *pa);
-static int ext4_mb_init_per_dev_proc(struct super_block *sb);
-static int ext4_mb_destroy_per_dev_proc(struct super_block *sb);
-static void release_blocks_on_commit(journal_t *journal, transaction_t *txn);
-
-
-static inline void ext4_lock_group(struct super_block *sb, ext4_group_t group)
-{
- struct ext4_group_info *grinfo = ext4_get_group_info(sb, group);
-
- bit_spin_lock(EXT4_GROUP_INFO_LOCKED_BIT, &(grinfo->bb_state));
-}
-
-static inline void ext4_unlock_group(struct super_block *sb,
- ext4_group_t group)
-{
- struct ext4_group_info *grinfo = ext4_get_group_info(sb, group);
-
- bit_spin_unlock(EXT4_GROUP_INFO_LOCKED_BIT, &(grinfo->bb_state));
-}
-
-static inline int ext4_is_group_locked(struct super_block *sb,
- ext4_group_t group)
-{
- struct ext4_group_info *grinfo = ext4_get_group_info(sb, group);
-
- return bit_spin_is_locked(EXT4_GROUP_INFO_LOCKED_BIT,
- &(grinfo->bb_state));
-}
-
-static ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb,
+static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb,
struct ext4_free_extent *fex)
{
ext4_fsblk_t block;