From 19a5f5e2ef37f032efd840ada257bce2e91c8066 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Sat, 4 Jun 2016 14:25:24 -0700 Subject: [PATCH] f2fs: drop any block plugging In f2fs, we don't need to keep block plugging for NODE and DATA writes, since we already merged bios as much as possible. Signed-off-by: Jaegeuk Kim --- fs/f2fs/checkpoint.c | 4 ---- fs/f2fs/data.c | 17 ++++++++++------- fs/f2fs/gc.c | 5 ----- fs/f2fs/segment.c | 7 +------ 4 files changed, 11 insertions(+), 22 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 5ddd15cd6c6c..4179c7b971fc 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -897,11 +897,8 @@ static int block_operations(struct f2fs_sb_info *sbi) .nr_to_write = LONG_MAX, .for_reclaim = 0, }; - struct blk_plug plug; int err = 0; - blk_start_plug(&plug); - retry_flush_dents: f2fs_lock_all(sbi); /* write all the dirty dentry pages */ @@ -938,7 +935,6 @@ retry_flush_nodes: goto retry_flush_nodes; } out: - blk_finish_plug(&plug); return err; } diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 30dc448cae60..5f655d0c5b1f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -98,10 +98,13 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, } static inline void __submit_bio(struct f2fs_sb_info *sbi, int rw, - struct bio *bio) + struct bio *bio, enum page_type type) { - if (!is_read_io(rw)) + if (!is_read_io(rw)) { atomic_inc(&sbi->nr_wb_bios); + if (current->plug && (type == DATA || type == NODE)) + blk_finish_plug(current->plug); + } submit_bio(rw, bio); } @@ -117,7 +120,7 @@ static void __submit_merged_bio(struct f2fs_bio_info *io) else trace_f2fs_submit_write_bio(io->sbi->sb, fio, io->bio); - __submit_bio(io->sbi, fio->rw, io->bio); + __submit_bio(io->sbi, fio->rw, io->bio, fio->type); io->bio = NULL; } @@ -235,7 +238,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio) return -EFAULT; } - __submit_bio(fio->sbi, fio->rw, bio); + __submit_bio(fio->sbi, fio->rw, bio, fio->type); return 0; } @@ -1040,7 +1043,7 @@ got_it: */ if (bio && (last_block_in_bio != block_nr - 1)) { submit_and_realloc: - __submit_bio(F2FS_I_SB(inode), READ, bio); + __submit_bio(F2FS_I_SB(inode), READ, bio, DATA); bio = NULL; } if (bio == NULL) { @@ -1083,7 +1086,7 @@ set_error_page: goto next_page; confused: if (bio) { - __submit_bio(F2FS_I_SB(inode), READ, bio); + __submit_bio(F2FS_I_SB(inode), READ, bio, DATA); bio = NULL; } unlock_page(page); @@ -1093,7 +1096,7 @@ next_page: } BUG_ON(pages && !list_empty(pages)); if (bio) - __submit_bio(F2FS_I_SB(inode), READ, bio); + __submit_bio(F2FS_I_SB(inode), READ, bio, DATA); return 0; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 4a03076074af..67fd2855ccc9 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -777,7 +777,6 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, { struct page *sum_page; struct f2fs_summary_block *sum; - struct blk_plug plug; unsigned int segno = start_segno; unsigned int end_segno = start_segno + sbi->segs_per_sec; int seg_freed = 0; @@ -795,8 +794,6 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, unlock_page(sum_page); } - blk_start_plug(&plug); - for (segno = start_segno; segno < end_segno; segno++) { /* find segment summary of victim */ sum_page = find_get_page(META_MAPPING(sbi), @@ -830,8 +827,6 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, f2fs_submit_merged_bio(sbi, (type == SUM_TYPE_NODE) ? NODE : DATA, WRITE); - blk_finish_plug(&plug); - if (gc_type == FG_GC) { while (start_segno < end_segno) if (get_valid_blocks(sbi, start_segno++, 1) == 0) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 7b58bfbd84a3..eff046a792ad 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -379,13 +379,8 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi) excess_prefree_segs(sbi) || excess_dirty_nats(sbi) || (is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) { - if (test_opt(sbi, DATA_FLUSH)) { - struct blk_plug plug; - - blk_start_plug(&plug); + if (test_opt(sbi, DATA_FLUSH)) sync_dirty_inodes(sbi, FILE_INODE); - blk_finish_plug(&plug); - } f2fs_sync_fs(sbi->sb, true); stat_inc_bg_cp_count(sbi->stat_info); } -- 2.30.2