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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-10-18 11:07:45 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-11-23 12:11:07 -0800 |
| commit | 664ba972df9b96942191db3068274cc1db899774 (patch) | |
| tree | ba7009de03069fd659fa1557d775caa7c9e5bd8f /fs/f2fs/segment.h | |
| parent | 3e7b5bbbef7f5eb8a19aa61b611c704bf8230937 (diff) | |
| download | talos-obmc-linux-664ba972df9b96942191db3068274cc1db899774.tar.gz talos-obmc-linux-664ba972df9b96942191db3068274cc1db899774.zip | |
f2fs: use BIO_MAX_PAGES for bio allocation
We don't need to allocate bio partially in order to maximize sequential writes.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 17 |
1 files changed, 3 insertions, 14 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 762743988426..89ab4301ef02 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -102,8 +102,6 @@ (((sector_t)blk_addr) << F2FS_LOG_SECTORS_PER_BLOCK) #define SECTOR_TO_BLOCK(sectors) \ (sectors >> F2FS_LOG_SECTORS_PER_BLOCK) -#define MAX_BIO_BLOCKS(sbi) \ - ((int)min((int)max_hw_blocks(sbi), BIO_MAX_PAGES)) /* * indicate a block allocation direction: RIGHT and LEFT. @@ -696,13 +694,6 @@ static inline bool sec_usage_check(struct f2fs_sb_info *sbi, unsigned int secno) return false; } -static inline unsigned int max_hw_blocks(struct f2fs_sb_info *sbi) -{ - struct block_device *bdev = sbi->sb->s_bdev; - struct request_queue *q = bdev_get_queue(bdev); - return SECTOR_TO_BLOCK(queue_max_sectors(q)); -} - /* * It is very important to gather dirty pages and write at once, so that we can * submit a big bio without interfering other data writes. @@ -720,7 +711,7 @@ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) else if (type == NODE) return 8 * sbi->blocks_per_seg; else if (type == META) - return 8 * MAX_BIO_BLOCKS(sbi); + return 8 * BIO_MAX_PAGES; else return 0; } @@ -737,11 +728,9 @@ static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, return 0; nr_to_write = wbc->nr_to_write; - + desired = BIO_MAX_PAGES; if (type == NODE) - desired = 2 * max_hw_blocks(sbi); - else - desired = MAX_BIO_BLOCKS(sbi); + desired <<= 1; wbc->nr_to_write = desired; return desired - nr_to_write; |
