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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-04-28 23:38:46 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-05-09 13:36:56 +0900 |
| commit | 85c2a74fabadfc561b75fbd7decc6bcbfe873d57 (patch) | |
| tree | ad0adcd8377412184a9a5bac9fea3191cbea29ca /fs/nilfs2/recovery.c | |
| parent | 091bf7624d1c90cec9e578a18529f615213ff847 (diff) | |
| download | linux-85c2a74fabadfc561b75fbd7decc6bcbfe873d57.tar.bz2 | |
nilfs2: fix possible recovery failure due to block creation without writer
Some function calls in nilfs_prepare_segment_for_recovery() may fail
because they can create blocks on meta data files without configuring
a writable FS-instance. Concretely, nilfs_mdt_create_block() routine
of meta data files will fail in that case.
This fixes the problem by temporarily attaching a writable FS-instace
during the function is called.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/recovery.c')
| -rw-r--r-- | fs/nilfs2/recovery.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c index 4fc081e47d70..57afa9d24061 100644 --- a/fs/nilfs2/recovery.c +++ b/fs/nilfs2/recovery.c @@ -407,6 +407,7 @@ void nilfs_dispose_segment_list(struct list_head *head) } static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, + struct nilfs_sb_info *sbi, struct nilfs_recovery_info *ri) { struct list_head *head = &ri->ri_used_segments; @@ -421,6 +422,7 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, segnum[2] = ri->ri_segnum; segnum[3] = ri->ri_nextnum; + nilfs_attach_writer(nilfs, sbi); /* * Releasing the next segment of the latest super root. * The next segment is invalidated by this recovery. @@ -459,10 +461,10 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs, nilfs->ns_pseg_offset = 0; nilfs->ns_seg_seq = ri->ri_seq + 2; nilfs->ns_nextnum = nilfs->ns_segnum = segnum[0]; - return 0; failed: /* No need to recover sufile because it will be destroyed on error */ + nilfs_detach_writer(nilfs, sbi); return err; } @@ -728,7 +730,7 @@ int nilfs_recover_logical_segments(struct the_nilfs *nilfs, goto failed; if (ri->ri_need_recovery == NILFS_RECOVERY_ROLLFORWARD_DONE) { - err = nilfs_prepare_segment_for_recovery(nilfs, ri); + err = nilfs_prepare_segment_for_recovery(nilfs, sbi, ri); if (unlikely(err)) { printk(KERN_ERR "NILFS: Error preparing segments for " "recovery.\n"); |