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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-05-16 11:42:32 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-05-18 13:57:30 -0700 |
| commit | 513c5f3735a9bd0bd8b58b6cdafbad5ef19f2159 (patch) | |
| tree | cff1349dc68fd1119baad78b2f667f2719d8a166 /fs/f2fs/f2fs.h | |
| parent | 41382ec43255b502321c3c27f1347efeb3279290 (diff) | |
| download | blackbird-obmc-linux-513c5f3735a9bd0bd8b58b6cdafbad5ef19f2159.tar.gz blackbird-obmc-linux-513c5f3735a9bd0bd8b58b6cdafbad5ef19f2159.zip | |
f2fs: use percpu_counter for total_valid_inode_count
This patch uses percpu_counter to avoid stat_lock.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index c8833c802ea9..02f0656cb2ab 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -801,7 +801,6 @@ struct f2fs_sb_info { unsigned int total_sections; /* total section count */ unsigned int total_node_count; /* total node block count */ unsigned int total_valid_node_count; /* valid node block count */ - unsigned int total_valid_inode_count; /* valid inode count */ loff_t max_file_blocks; /* max block index of file */ int active_logs; /* # of active logs */ int dir_level; /* directory level */ @@ -818,6 +817,9 @@ struct f2fs_sb_info { /* # of allocated blocks */ struct percpu_counter alloc_valid_block_count; + /* valid inode count */ + struct percpu_counter total_valid_inode_count; + struct f2fs_mount_info mount_opt; /* mount options */ /* for cleaning operations */ @@ -1325,23 +1327,17 @@ static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) { - spin_lock(&sbi->stat_lock); - f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); - sbi->total_valid_inode_count++; - spin_unlock(&sbi->stat_lock); + percpu_counter_inc(&sbi->total_valid_inode_count); } static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) { - spin_lock(&sbi->stat_lock); - f2fs_bug_on(sbi, !sbi->total_valid_inode_count); - sbi->total_valid_inode_count--; - spin_unlock(&sbi->stat_lock); + percpu_counter_dec(&sbi->total_valid_inode_count); } -static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) +static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) { - return sbi->total_valid_inode_count; + return percpu_counter_sum_positive(&sbi->total_valid_inode_count); } static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, |
