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| author | Chao Yu <chao2.yu@samsung.com> | 2014-03-22 14:57:23 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-04-01 18:53:41 +0900 |
| commit | df0f8dc0e154de13e3a54846f384b674dd557c85 (patch) | |
| tree | 9465da562d6136bd8a49d55b834f3713af880c5f /fs/f2fs/data.c | |
| parent | 3bb5e2c8fe2296ddd9d864dcfb5ee1b77135f3ec (diff) | |
| download | linux-df0f8dc0e154de13e3a54846f384b674dd557c85.tar.gz linux-df0f8dc0e154de13e3a54846f384b674dd557c85.tar.bz2 linux-df0f8dc0e154de13e3a54846f384b674dd557c85.zip | |
f2fs: avoid unnecessary bio submit when wait page writeback
This patch introduce is_merged_page() to check whether current page is merged
in f2fs bio cache. When page is not in cache, we can avoid submitting bio cache,
resulting in having more chance to merge pages.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index b0c923aef229..598bfa617a7e 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -134,7 +134,7 @@ void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, io = is_read_io(rw) ? &sbi->read_io : &sbi->write_io[btype]; - mutex_lock(&io->io_mutex); + down_write(&io->io_rwsem); /* change META to META_FLUSH in the checkpoint procedure */ if (type >= META_FLUSH) { @@ -142,7 +142,7 @@ void f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, io->fio.rw = WRITE_FLUSH_FUA | REQ_META | REQ_PRIO; } __submit_merged_bio(io); - mutex_unlock(&io->io_mutex); + up_write(&io->io_rwsem); } /* @@ -180,7 +180,7 @@ void f2fs_submit_page_mbio(struct f2fs_sb_info *sbi, struct page *page, verify_block_addr(sbi, blk_addr); - mutex_lock(&io->io_mutex); + down_write(&io->io_rwsem); if (!is_read) inc_page_count(sbi, F2FS_WRITEBACK); @@ -204,7 +204,7 @@ alloc_new: io->last_block_in_bio = blk_addr; - mutex_unlock(&io->io_mutex); + up_write(&io->io_rwsem); trace_f2fs_submit_page_mbio(page, fio->rw, fio->type, blk_addr); } |