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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-08-04 21:38:25 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-08-19 05:15:08 +0300 |
| commit | b873b798af6386f3c7ca1636d4989e9b8f9d1794 (patch) | |
| tree | dc5e1c001d445112341f205154823bc775ada463 /fs/f2fs/super.c | |
| parent | 3408fef7448ce7d3c926978ee1a511e7707bffba (diff) | |
| download | linux-b873b798af6386f3c7ca1636d4989e9b8f9d1794.tar.xz | |
Revert "f2fs: use percpu_rw_semaphore"
LKP reported -36.3% regression of fsmark.files_per_sec due to this patch.
I've confirmed that fxmark [1] has also slight regression for DWAL.
[1] https://github.com/sslab-gatech/fxmark
This reverts commit ec795418c41850056feb956534edf059dc1155d4.
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 1b86d3f638ef..7f863a645ab1 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -706,8 +706,6 @@ static void destroy_percpu_info(struct f2fs_sb_info *sbi) percpu_counter_destroy(&sbi->nr_pages[i]); percpu_counter_destroy(&sbi->alloc_valid_block_count); percpu_counter_destroy(&sbi->total_valid_inode_count); - - percpu_free_rwsem(&sbi->cp_rwsem); } static void f2fs_put_super(struct super_block *sb) @@ -1483,9 +1481,6 @@ static int init_percpu_info(struct f2fs_sb_info *sbi) { int i, err; - if (percpu_init_rwsem(&sbi->cp_rwsem)) - return -ENOMEM; - for (i = 0; i < NR_COUNT_TYPE; i++) { err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); if (err) @@ -1686,6 +1681,7 @@ try_onemore: sbi->write_io[i].bio = NULL; } + init_rwsem(&sbi->cp_rwsem); init_waitqueue_head(&sbi->cp_wait); init_sb_info(sbi); |