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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-10-21 02:09:57 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-12 10:39:35 (GMT) |
| commit | 725ba1a3ebc49478f76dea369563a79c86546fbd (patch) | |
| tree | df27c56644a08dd9f88dcc2f9b45ba6119152b05 /fs/f2fs/super.c | |
| parent | 5cc85ef4ffe6c3f1d35b75975c5731248c5af4a7 (diff) | |
| download | linux-725ba1a3ebc49478f76dea369563a79c86546fbd.tar.xz | |
f2fs: remove percpu_count due to performance regression
commit 35782b233f37e48ecc469d9c7232f3f6a7fad41a upstream.
This patch removes percpu_count usage due to performance regression in iozone.
Fixes: 523be8a6b3 ("f2fs: use percpu_counter for page counters")
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 8021d35..013c6a5 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -688,10 +688,6 @@ static void f2fs_destroy_inode(struct inode *inode) static void destroy_percpu_info(struct f2fs_sb_info *sbi) { - int i; - - for (i = 0; i < NR_COUNT_TYPE; i++) - percpu_counter_destroy(&sbi->nr_pages[i]); percpu_counter_destroy(&sbi->alloc_valid_block_count); percpu_counter_destroy(&sbi->total_valid_inode_count); } @@ -1442,6 +1438,7 @@ int sanity_check_ckpt(struct f2fs_sb_info *sbi) static void init_sb_info(struct f2fs_sb_info *sbi) { struct f2fs_super_block *raw_super = sbi->raw_super; + int i; sbi->log_sectors_per_block = le32_to_cpu(raw_super->log_sectors_per_block); @@ -1466,6 +1463,9 @@ static void init_sb_info(struct f2fs_sb_info *sbi) sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; clear_sbi_flag(sbi, SBI_NEED_FSCK); + for (i = 0; i < NR_COUNT_TYPE; i++) + atomic_set(&sbi->nr_pages[i], 0); + INIT_LIST_HEAD(&sbi->s_list); mutex_init(&sbi->umount_mutex); mutex_init(&sbi->wio_mutex[NODE]); @@ -1481,13 +1481,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi) static int init_percpu_info(struct f2fs_sb_info *sbi) { - int i, err; - - for (i = 0; i < NR_COUNT_TYPE; i++) { - err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); - if (err) - return err; - } + int err; err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); if (err) |