diff options
| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2014-10-20 17:45:50 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-11-03 16:07:36 -0800 |
| commit | c6ac4c0ec416e77cab09cac6cee2d100fbd7fc82 (patch) | |
| tree | 24dd196ef82d5a87dc683640fb5366a1d27e19ba | |
| parent | fa528722d06ecbee9d918b9eec58c5d4c2978839 (diff) | |
| download | op-kernel-dev-c6ac4c0ec416e77cab09cac6cee2d100fbd7fc82.zip op-kernel-dev-c6ac4c0ec416e77cab09cac6cee2d100fbd7fc82.tar.gz | |
f2fs: introduce f2fs_change_bit to simplify the change bit logic
Introduce f2fs_change_bit to simplify the change bit logic in
function set_to_next_nat{sit}.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/f2fs.h | 9 | ||||
| -rw-r--r-- | fs/f2fs/node.h | 5 | ||||
| -rw-r--r-- | fs/f2fs/segment.h | 5 |
3 files changed, 11 insertions, 8 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 3608c13..60045a2 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1073,6 +1073,15 @@ static inline int f2fs_clear_bit(unsigned int nr, char *addr) return ret; } +static inline void f2fs_change_bit(unsigned int nr, char *addr) +{ + int mask; + + addr += (nr >> 3); + mask = 1 << (7 - (nr & 0x07)); + *addr ^= mask; +} + /* used for f2fs_inode_info->flags */ enum { FI_NEW_INODE, /* indicate newly allocated inode */ diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 8d5e6e0d..acb71e5 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -192,10 +192,7 @@ static inline void set_to_next_nat(struct f2fs_nm_info *nm_i, nid_t start_nid) { unsigned int block_off = NAT_BLOCK_OFFSET(start_nid); - if (f2fs_test_bit(block_off, nm_i->nat_bitmap)) - f2fs_clear_bit(block_off, nm_i->nat_bitmap); - else - f2fs_set_bit(block_off, nm_i->nat_bitmap); + f2fs_change_bit(block_off, nm_i->nat_bitmap); } static inline void fill_node_footer(struct page *page, nid_t nid, diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 2495bec..6723ccc 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -657,10 +657,7 @@ static inline void set_to_next_sit(struct sit_info *sit_i, unsigned int start) { unsigned int block_off = SIT_BLOCK_OFFSET(start); - if (f2fs_test_bit(block_off, sit_i->sit_bitmap)) - f2fs_clear_bit(block_off, sit_i->sit_bitmap); - else - f2fs_set_bit(block_off, sit_i->sit_bitmap); + f2fs_change_bit(block_off, sit_i->sit_bitmap); } static inline unsigned long long get_mtime(struct f2fs_sb_info *sbi) |
