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nilfs2: clean up get/put function of a segment usage

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This eliminates obsolete nilfs_get_sufile_get_segment_usage() and
nilfs_set_sufile_segment_usage() from sufile.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2009-11-18 18:37:28 +09:00
parent 071ec54dd7
commit f021759d74
2 changed files with 0 additions and 77 deletions
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72
fs/nilfs2/sufile.c
View file

@ -429,78 +429,6 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum,
nilfs_mdt_mark_dirty(sufile); nilfs_mdt_mark_dirty(sufile);
} }
/**
* nilfs_sufile_get_segment_usage - get a segment usage
* @sufile: inode of segment usage file
* @segnum: segment number
* @sup: pointer to segment usage
* @bhp: pointer to buffer head
*
* Description: nilfs_sufile_get_segment_usage() acquires the segment usage
* specified by @segnum.
*
* Return Value: On success, 0 is returned, and the segment usage and the
* buffer head of the buffer on which the segment usage is located are stored
* in the place pointed by @sup and @bhp, respectively. On error, one of the
* following negative error codes is returned.
*
* %-EIO - I/O error.
*
* %-ENOMEM - Insufficient amount of memory available.
*
* %-EINVAL - Invalid segment usage number.
*/
int nilfs_sufile_get_segment_usage(struct inode *sufile, __u64 segnum,
struct nilfs_segment_usage **sup,
struct buffer_head **bhp)
{
struct buffer_head *bh;
struct nilfs_segment_usage *su;
void *kaddr;
int ret;
/* segnum is 0 origin */
if (segnum >= nilfs_sufile_get_nsegments(sufile))
return -EINVAL;
down_write(&NILFS_MDT(sufile)->mi_sem);
ret = nilfs_sufile_get_segment_usage_block(sufile, segnum, 1, &bh);
if (ret < 0)
goto out_sem;
kaddr = kmap(bh->b_page);
su = nilfs_sufile_block_get_segment_usage(sufile, segnum, bh, kaddr);
if (nilfs_segment_usage_error(su)) {
kunmap(bh->b_page);
brelse(bh);
ret = -EINVAL;
goto out_sem;
}
if (sup != NULL)
*sup = su;
*bhp = bh;
out_sem:
up_write(&NILFS_MDT(sufile)->mi_sem);
return ret;
}
/**
* nilfs_sufile_put_segment_usage - put a segment usage
* @sufile: inode of segment usage file
* @segnum: segment number
* @bh: buffer head
*
* Description: nilfs_sufile_put_segment_usage() releases the segment usage
* specified by @segnum. @bh must be the buffer head which have been returned
* by a previous call to nilfs_sufile_get_segment_usage() with @segnum.
*/
void nilfs_sufile_put_segment_usage(struct inode *sufile, __u64 segnum,
struct buffer_head *bh)
{
kunmap(bh->b_page);
brelse(bh);
}
/** /**
* nilfs_sufile_mark_dirty - mark the buffer having a segment usage dirty * nilfs_sufile_mark_dirty - mark the buffer having a segment usage dirty
* @sufile: inode of segment usage file * @sufile: inode of segment usage file

5
fs/nilfs2/sufile.h
View file

@ -37,11 +37,6 @@ static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile)
unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile);
int nilfs_sufile_alloc(struct inode *, __u64 *); int nilfs_sufile_alloc(struct inode *, __u64 *);
int nilfs_sufile_get_segment_usage(struct inode *, __u64,
struct nilfs_segment_usage **,
struct buffer_head **);
void nilfs_sufile_put_segment_usage(struct inode *, __u64,
struct buffer_head *);
int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum); int nilfs_sufile_mark_dirty(struct inode *sufile, __u64 segnum);
int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum, int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum,
unsigned long nblocks, time_t modtime); unsigned long nblocks, time_t modtime);