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nilfs2: add helper to get if volume is in a valid state

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This adds a helper function, nilfs_valid_fs() which returns if nilfs
is in a valid state or not.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2009-11-19 19:58:46 +09:00
parent f50a4c8149
commit a057d2c011
2 changed files with 11 additions and 5 deletions
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6
fs/nilfs2/the_nilfs.c
View file

@ -261,16 +261,12 @@ int load_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi)
struct nilfs_recovery_info ri; struct nilfs_recovery_info ri;
unsigned int s_flags = sbi->s_super->s_flags; unsigned int s_flags = sbi->s_super->s_flags;
int really_read_only = bdev_read_only(nilfs->ns_bdev); int really_read_only = bdev_read_only(nilfs->ns_bdev);
unsigned valid_fs; int valid_fs = nilfs_valid_fs(nilfs);
int err; int err;
if (nilfs_loaded(nilfs)) if (nilfs_loaded(nilfs))
return 0; return 0;
down_write(&nilfs->ns_sem);
valid_fs = (nilfs->ns_mount_state & NILFS_VALID_FS);
up_write(&nilfs->ns_sem);
if (!valid_fs) { if (!valid_fs) {
printk(KERN_WARNING "NILFS warning: mounting unchecked fs\n"); printk(KERN_WARNING "NILFS warning: mounting unchecked fs\n");
if (s_flags & MS_RDONLY) { if (s_flags & MS_RDONLY) {

10
fs/nilfs2/the_nilfs.h
View file

@ -258,6 +258,16 @@ static inline void nilfs_put_sbinfo(struct nilfs_sb_info *sbi)
kfree(sbi); kfree(sbi);
} }
static inline int nilfs_valid_fs(struct the_nilfs *nilfs)
{
unsigned valid_fs;
down_read(&nilfs->ns_sem);
valid_fs = (nilfs->ns_mount_state & NILFS_VALID_FS);
up_read(&nilfs->ns_sem);
return valid_fs;
}
static inline void static inline void
nilfs_get_segment_range(struct the_nilfs *nilfs, __u64 segnum, nilfs_get_segment_range(struct the_nilfs *nilfs, __u64 segnum,
sector_t *seg_start, sector_t *seg_end) sector_t *seg_start, sector_t *seg_end)