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| author | Chao Yu <chao2.yu@samsung.com> | 2014-04-23 14:10:24 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-05-07 10:21:57 +0900 |
| commit | 267378d4de696d4397cd611e62957d19b2a61357 (patch) | |
| tree | fdcc2b128e16060b5b451f9b8405a424534f7b17 /fs/f2fs/f2fs.h | |
| parent | 2163d19815b3dfdb243cee2de2478ae7efce1942 (diff) | |
| download | lwn-267378d4de696d4397cd611e62957d19b2a61357.tar.gz lwn-267378d4de696d4397cd611e62957d19b2a61357.zip | |
f2fs: introduce f2fs_seek_block to support SEEK_{DATA, HOLE} in llseek
In This patch we introduce f2fs_seek_block to support SEEK_{DATA,HOLE} of
lseek(2).
change log from v1:
o fix bug when lseek from middle of page and fix wrong calculation of
PGOFS_OF_NEXT_DNODE macro.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 1ca958ab40e3..e77be7cb1e60 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1079,6 +1079,12 @@ static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) +/* get offset of first page in next direct node */ +#define PGOFS_OF_NEXT_DNODE(pgofs, fi) \ + ((pgofs < ADDRS_PER_INODE(fi)) ? ADDRS_PER_INODE(fi) : \ + (pgofs - ADDRS_PER_INODE(fi) + ADDRS_PER_BLOCK) / \ + ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi)) + /* * file.c */ |