diff options
| -rw-r--r-- | fs/nilfs2/sufile.c | 31 | ||||
| -rw-r--r-- | fs/nilfs2/sufile.h | 3 | ||||
| -rw-r--r-- | fs/nilfs2/the_nilfs.c | 23 |
3 files changed, 19 insertions, 38 deletions
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index e9b4cec..5f18aca 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -112,6 +112,15 @@ static void nilfs_sufile_mod_counter(struct buffer_head *header_bh, } /** + * nilfs_sufile_get_ncleansegs - return the number of clean segments + * @sufile: inode of segment usage file + */ +unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile) +{ + return NILFS_SUI(sufile)->ncleansegs; +} + +/** * nilfs_sufile_updatev - modify multiple segment usages at a time * @sufile: inode of segment usage file * @segnumv: array of segment numbers @@ -540,28 +549,6 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat) return ret; } -/** - * nilfs_sufile_get_ncleansegs - get the number of clean segments - * @sufile: inode of segment usage file - * @nsegsp: pointer to the number of clean segments - * - * Description: nilfs_sufile_get_ncleansegs() acquires the number of clean - * segments. - * - * Return Value: On success, 0 is returned and the number of clean segments is - * stored in the place pointed by @nsegsp. On error, one of the following - * negative error codes is returned. - * - * %-EIO - I/O error. - * - * %-ENOMEM - Insufficient amount of memory available. - */ -int nilfs_sufile_get_ncleansegs(struct inode *sufile, unsigned long *nsegsp) -{ - *nsegsp = NILFS_SUI(sufile)->ncleansegs; - return 0; -} - void nilfs_sufile_do_set_error(struct inode *sufile, __u64 segnum, struct buffer_head *header_bh, struct buffer_head *su_bh) diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h index b303a80..c339ad5 100644 --- a/fs/nilfs2/sufile.h +++ b/fs/nilfs2/sufile.h @@ -34,6 +34,8 @@ static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile) return NILFS_MDT(sufile)->mi_nilfs->ns_nsegments; } +unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile); + int nilfs_sufile_alloc(struct inode *, __u64 *); int nilfs_sufile_get_segment_usage(struct inode *, __u64, struct nilfs_segment_usage **, @@ -41,7 +43,6 @@ int nilfs_sufile_get_segment_usage(struct inode *, __u64, void nilfs_sufile_put_segment_usage(struct inode *, __u64, struct buffer_head *); int nilfs_sufile_get_stat(struct inode *, struct nilfs_sustat *); -int nilfs_sufile_get_ncleansegs(struct inode *, unsigned long *); ssize_t nilfs_sufile_get_suinfo(struct inode *, __u64, void *, unsigned, size_t); diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c index 75095ed..4d4d35c 100644 --- a/fs/nilfs2/the_nilfs.c +++ b/fs/nilfs2/the_nilfs.c @@ -612,30 +612,23 @@ int nilfs_count_free_blocks(struct the_nilfs *nilfs, sector_t *nblocks) { struct inode *dat = nilfs_dat_inode(nilfs); unsigned long ncleansegs; - int err; down_read(&NILFS_MDT(dat)->mi_sem); /* XXX */ - err = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile, &ncleansegs); + ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile); up_read(&NILFS_MDT(dat)->mi_sem); /* XXX */ - if (likely(!err)) - *nblocks = (sector_t)ncleansegs * nilfs->ns_blocks_per_segment; - return err; + *nblocks = (sector_t)ncleansegs * nilfs->ns_blocks_per_segment; + return 0; } int nilfs_near_disk_full(struct the_nilfs *nilfs) { - struct inode *sufile = nilfs->ns_sufile; unsigned long ncleansegs, nincsegs; - int ret; - ret = nilfs_sufile_get_ncleansegs(sufile, &ncleansegs); - if (likely(!ret)) { - nincsegs = atomic_read(&nilfs->ns_ndirtyblks) / - nilfs->ns_blocks_per_segment + 1; - if (ncleansegs <= nilfs->ns_nrsvsegs + nincsegs) - ret++; - } - return ret; + ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile); + nincsegs = atomic_read(&nilfs->ns_ndirtyblks) / + nilfs->ns_blocks_per_segment + 1; + + return ncleansegs <= nilfs->ns_nrsvsegs + nincsegs; } /** |