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f2fs: write dirty meta pages collectively
This patch enhances writing dirty meta pages collectively in background. During the file data writes, it'd better avoid to write small dirty meta pages frequently. So let's give a chance to collect a number of dirty meta pages for a while. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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1 changed files with 4 additions and 3 deletions
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@ -107,18 +107,19 @@ static int f2fs_write_meta_pages(struct address_space *mapping,
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struct writeback_control *wbc)
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{
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struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb);
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struct block_device *bdev = sbi->sb->s_bdev;
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int nrpages = MAX_BIO_BLOCKS(max_hw_blocks(sbi));
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long written;
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if (wbc->for_kupdate)
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return 0;
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if (get_pages(sbi, F2FS_DIRTY_META) == 0)
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/* collect a number of dirty meta pages and write together */
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if (get_pages(sbi, F2FS_DIRTY_META) < nrpages)
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return 0;
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/* if mounting is failed, skip writing node pages */
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mutex_lock(&sbi->cp_mutex);
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written = sync_meta_pages(sbi, META, bio_get_nr_vecs(bdev));
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written = sync_meta_pages(sbi, META, nrpages);
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mutex_unlock(&sbi->cp_mutex);
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wbc->nr_to_write -= written;
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return 0;
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