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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2015-04-16 12:46:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:04:03 -0400 |
| commit | ead8ecffa3e180202c1096a39f14bbecffb139a1 (patch) | |
| tree | e62f1c805c06e493bc0810a0951fe9db71352b84 /fs/nilfs2/segment.c | |
| parent | 6fb7a61e98ac311a65bc652a12611d9899994f49 (diff) | |
| download | linux-0-day-ead8ecffa3e180202c1096a39f14bbecffb139a1.tar.gz linux-0-day-ead8ecffa3e180202c1096a39f14bbecffb139a1.tar.xz | |
nilfs2: use set_mask_bits() for operations on buffer state bitmap
nilfs_forget_buffer(), nilfs_clear_dirty_page(), and
nilfs_segctor_complete_write() are using a bunch of atomic bit operations
against buffer state bitmap.
This reduces the number of them by utilizing set_mask_bits() macro.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/segment.c')
| -rw-r--r-- | fs/nilfs2/segment.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index c9a4e60134456..c6abbad9b8e38 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -24,6 +24,7 @@ #include <linux/pagemap.h> #include <linux/buffer_head.h> #include <linux/writeback.h> +#include <linux/bitops.h> #include <linux/bio.h> #include <linux/completion.h> #include <linux/blkdev.h> @@ -1785,12 +1786,13 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci) */ list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { - set_buffer_uptodate(bh); - clear_buffer_dirty(bh); - clear_buffer_async_write(bh); - clear_buffer_delay(bh); - clear_buffer_nilfs_volatile(bh); - clear_buffer_nilfs_redirected(bh); + const unsigned long set_bits = (1 << BH_Uptodate); + const unsigned long clear_bits = + (1 << BH_Dirty | 1 << BH_Async_Write | + 1 << BH_Delay | 1 << BH_NILFS_Volatile | + 1 << BH_NILFS_Redirected); + + set_mask_bits(&bh->b_state, clear_bits, set_bits); if (bh == segbuf->sb_super_root) { if (bh->b_page != bd_page) { end_page_writeback(bd_page); |