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author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-18 18:37:28 +0900 |
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committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-20 10:05:51 +0900 |
commit | f021759d74d71bacc73fc3e00d6e3d35e1f2e123 (patch) | |
tree | 245b128351c6bd30f1c34c409198b42a63b77fbb /fs/nilfs2/sufile.c | |
parent | 071ec54dd730307ee0e703a105872b9a1c6fd2aa (diff) | |
download | kernel_samsung_espresso10-f021759d74d71bacc73fc3e00d6e3d35e1f2e123.zip kernel_samsung_espresso10-f021759d74d71bacc73fc3e00d6e3d35e1f2e123.tar.gz kernel_samsung_espresso10-f021759d74d71bacc73fc3e00d6e3d35e1f2e123.tar.bz2 |
nilfs2: clean up get/put function of a segment usage
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>
Diffstat (limited to 'fs/nilfs2/sufile.c')
-rw-r--r-- | fs/nilfs2/sufile.c | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 3eed998..b6c36d0 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -430,78 +430,6 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum, } /** - * 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 * @sufile: inode of segment usage file * @segnum: segment number |