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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-30 22:37:50 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-28 15:41:39 -0700 |
| commit | a66cdd985532e69999b79249cd3b4a6bccd0f84b (patch) | |
| tree | f031e26f195e77b8e49e37a86dbf96af5436b6f0 /fs/f2fs/f2fs.h | |
| parent | d6c67a4fee866ad95fe1d727f80a56f956737706 (diff) | |
| download | linux-a66cdd985532e69999b79249cd3b4a6bccd0f84b.tar.bz2 | |
f2fs: introduce discard_map for f2fs_trim_fs
This patch adds a bitmap for discard issues from f2fs_trim_fs.
There-in rule is to issue discard commands only for invalidated blocks
after mount.
Once mount is done, f2fs_trim_fs trims out whole invalid area.
After ehn, it will not issue and discrads redundantly.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 78a430028f1d..98fc719f5250 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -117,6 +117,8 @@ enum { #define DEF_BATCHED_TRIM_SECTIONS 32 #define BATCHED_TRIM_SEGMENTS(sbi) \ (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) +#define BATCHED_TRIM_BLOCKS(sbi) \ + (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) struct cp_control { int reason; @@ -698,6 +700,7 @@ struct f2fs_sb_info { block_t user_block_count; /* # of user blocks */ block_t total_valid_block_count; /* # of valid blocks */ block_t alloc_valid_block_count; /* # of allocated blocks */ + block_t discard_blks; /* discard command candidats */ block_t last_valid_block_count; /* for recovery */ u32 s_next_generation; /* for NFS support */ atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ @@ -1225,6 +1228,24 @@ static inline int f2fs_test_bit(unsigned int nr, char *addr) return mask & *addr; } +static inline void f2fs_set_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = 1 << (7 - (nr & 0x07)); + *addr |= mask; +} + +static inline void f2fs_clear_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = 1 << (7 - (nr & 0x07)); + *addr &= ~mask; +} + static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) { int mask; |