diff options
| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-11-15 13:55:58 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-23 10:18:00 +0900 |
| commit | 7fd9e544fbb10c6ae4b4953f6063560c8eeae6e8 (patch) | |
| tree | 886a26e62f058fe48656335374657c402dfb3da0 /fs/f2fs/segment.c | |
| parent | e81c93cf8c7bd413898798cf8c67f18b1fef3360 (diff) | |
f2fs: add a slab cache entry for small discards
This patch adds a slab cache entry for small discards.
Each entry consists of:
struct discard_entry {
struct list_head list; /* list head */
block_t blkaddr; /* block address to be discarded */
int len; /* # of consecutive blocks of the discard */
};
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/segment.c')
| -rw-r--r-- | fs/f2fs/segment.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 67f1e5bbdac9..823526ec5243 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -22,6 +22,8 @@ #define __reverse_ffz(x) __reverse_ffs(~(x)) +static struct kmem_cache *discard_entry_slab; + /* * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since * MSB and LSB are reversed in a byte by f2fs_set_bit. @@ -1798,6 +1800,10 @@ int build_segment_manager(struct f2fs_sb_info *sbi) sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); sm_info->rec_prefree_segments = DEF_RECLAIM_PREFREE_SEGMENTS; + INIT_LIST_HEAD(&sm_info->discard_list); + sm_info->nr_discards = 0; + sm_info->max_discards = 0; + err = build_sit_info(sbi); if (err) return err; @@ -1913,3 +1919,17 @@ void destroy_segment_manager(struct f2fs_sb_info *sbi) sbi->sm_info = NULL; kfree(sm_info); } + +int __init create_segment_manager_caches(void) +{ + discard_entry_slab = f2fs_kmem_cache_create("discard_entry", + sizeof(struct discard_entry), NULL); + if (!discard_entry_slab) + return -ENOMEM; + return 0; +} + +void destroy_segment_manager_caches(void) +{ + kmem_cache_destroy(discard_entry_slab); +} |