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authorAdrian Hunter <ext-adrian.hunter@nokia.com>2009-01-29 12:59:33 +0200
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2009-01-29 16:19:36 +0200
commitb466f17d780c5b72427f36aef22ecdec9f1d0689 (patch)
tree09346513db7a7563f9a79ec0e6ec56b8536fabe9
parent227c75c91dbfa037d109ab7ef45b7f5ba9cab6d0 (diff)
UBIFS: remount ro fixes
- preserve the idx_gc list - it will be needed in the same state, should UBIFS be remounted rw again - prevent remounting ro if we have switched to read only mode (due to a fatal error) Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
-rw-r--r--fs/ubifs/gc.c18
-rw-r--r--fs/ubifs/super.c14
-rw-r--r--fs/ubifs/ubifs.h2
3 files changed, 13 insertions, 21 deletions
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index bad3339a800..a711d33b3d3 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -830,29 +830,21 @@ out:
* ubifs_destroy_idx_gc - destroy idx_gc list.
* @c: UBIFS file-system description object
*
- * This function destroys the @c->idx_gc list. It is called when unmounting or
- * remounting read-only so locks are not needed. Returns zero in case of
- * success and a negative error code in case of failure.
+ * This function destroys the @c->idx_gc list. It is called when unmounting
+ * so locks are not needed. Returns zero in case of success and a negative
+ * error code in case of failure.
*/
-int ubifs_destroy_idx_gc(struct ubifs_info *c)
+void ubifs_destroy_idx_gc(struct ubifs_info *c)
{
- int ret = 0;
-
while (!list_empty(&c->idx_gc)) {
- int err;
struct ubifs_gced_idx_leb *idx_gc;
idx_gc = list_entry(c->idx_gc.next, struct ubifs_gced_idx_leb,
list);
- err = ubifs_change_one_lp(c, idx_gc->lnum, LPROPS_NC,
- LPROPS_NC, 0, LPROPS_TAKEN, -1);
- if (err && !ret)
- ret = err;
+ c->idx_gc_cnt -= 1;
list_del(&idx_gc->list);
kfree(idx_gc);
}
-
- return ret;
}
/**
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 3ddd754262b..daa679d3a03 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1687,10 +1687,6 @@ static void ubifs_remount_ro(struct ubifs_info *c)
if (err)
ubifs_ro_mode(c, err);
- err = ubifs_destroy_idx_gc(c);
- if (err)
- ubifs_ro_mode(c, err);
-
free_wbufs(c);
vfree(c->orph_buf);
c->orph_buf = NULL;
@@ -1793,15 +1789,19 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) {
if (c->ro_media) {
- ubifs_msg("cannot re-mount R/W, UBIFS is working in "
- "R/O mode");
+ ubifs_msg("cannot re-mount due to prior errors");
return -EINVAL;
}
err = ubifs_remount_rw(c);
if (err)
return err;
- } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY))
+ } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
+ if (c->ro_media) {
+ ubifs_msg("cannot re-mount due to prior errors");
+ return -EINVAL;
+ }
ubifs_remount_ro(c);
+ }
if (c->bulk_read == 1)
bu_init(c);
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 29dfa816077..535f8742679 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1594,7 +1594,7 @@ int ubifs_replay_journal(struct ubifs_info *c);
int ubifs_garbage_collect(struct ubifs_info *c, int anyway);
int ubifs_gc_start_commit(struct ubifs_info *c);
int ubifs_gc_end_commit(struct ubifs_info *c);
-int ubifs_destroy_idx_gc(struct ubifs_info *c);
+void ubifs_destroy_idx_gc(struct ubifs_info *c);
int ubifs_get_idx_gc_leb(struct ubifs_info *c);
int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp);