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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-05 01:23:57 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 22:21:45 +0900 |
| commit | 619205da5b567504310daf829dede1187fa29bbc (patch) | |
| tree | cd672bb647ff22c711d93437fc53821852f27eba /fs/nilfs2/sufile.h | |
| parent | 56eb55388580ebd51f3bbd9af40ebb56849356af (diff) | |
| download | blackbird-op-linux-619205da5b567504310daf829dede1187fa29bbc.tar.gz blackbird-op-linux-619205da5b567504310daf829dede1187fa29bbc.zip | |
nilfs2: add ioctl which limits range of segment to be allocated
This adds a new ioctl command which limits range of segment to be
allocated. This is intended to gather data whithin a range of the
partition before shrinking the filesystem, or to control new log
location for some purpose.
If a range is specified by the ioctl, segment allocator of nilfs tries
to allocate new segments from the range unless no free segments are
available there.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/sufile.h')
| -rw-r--r-- | fs/nilfs2/sufile.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h index a943fbacb45b..57bfee9cd02d 100644 --- a/fs/nilfs2/sufile.h +++ b/fs/nilfs2/sufile.h @@ -36,6 +36,7 @@ static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); +int nilfs_sufile_set_alloc_range(struct inode *sufile, __u64 start, __u64 end); int nilfs_sufile_alloc(struct inode *, __u64 *); int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum); int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, |
