destroy_workqueue(commit_wq);
commit_wq = NULL;
}
- reiserfs_write_lock(sb);
free_journal_ram(sb);
+ reiserfs_write_lock(sb);
+
return 0;
}
struct reiserfs_journal *journal;
struct reiserfs_journal_list *jl;
char b[BDEVNAME_SIZE];
+ int ret;
+ /*
+ * Unlock here to avoid various RECLAIM-FS-ON <-> IN-RECLAIM-FS
+ * dependency inversion warnings.
+ */
+ reiserfs_write_unlock(sb);
journal = SB_JOURNAL(sb) = vmalloc(sizeof(struct reiserfs_journal));
if (!journal) {
reiserfs_warning(sb, "journal-1256",
"unable to get memory for journal structure");
+ reiserfs_write_lock(sb);
return 1;
}
memset(journal, 0, sizeof(struct reiserfs_journal));
INIT_LIST_HEAD(&journal->j_working_list);
INIT_LIST_HEAD(&journal->j_journal_list);
journal->j_persistent_trans = 0;
- if (reiserfs_allocate_list_bitmaps(sb,
- journal->j_list_bitmap,
- reiserfs_bmap_count(sb)))
+ ret = reiserfs_allocate_list_bitmaps(sb, journal->j_list_bitmap,
+ reiserfs_bmap_count(sb));
+ reiserfs_write_lock(sb);
+ if (ret)
goto free_and_return;
+
allocate_bitmap_nodes(sb);
/* reserved for journal area support */
goto free_and_return;
}
+ /*
+ * We need to unlock here to avoid creating the following
+ * dependency:
+ * reiserfs_lock -> sysfs_mutex
+ * Because the reiserfs mmap path creates the following dependency:
+ * mm->mmap -> reiserfs_lock, hence we have
+ * mm->mmap -> reiserfs_lock ->sysfs_mutex
+ * This would ends up in a circular dependency with sysfs readdir path
+ * which does sysfs_mutex -> mm->mmap_sem
+ * This is fine because the reiserfs lock is useless in mount path,
+ * at least until we call journal_begin. We keep it for paranoid
+ * reasons.
+ */
+ reiserfs_write_unlock(sb);
if (journal_init_dev(sb, journal, j_dev_name) != 0) {
+ reiserfs_write_lock(sb);
reiserfs_warning(sb, "sh-462",
"unable to initialize jornal device");
goto free_and_return;
}
+ reiserfs_write_lock(sb);
rs = SB_DISK_SUPER_BLOCK(sb);
}
reiserfs_mounted_fs_count++;
- if (reiserfs_mounted_fs_count <= 1)
+ if (reiserfs_mounted_fs_count <= 1) {
+ reiserfs_write_unlock(sb);
commit_wq = create_workqueue("reiserfs");
+ reiserfs_write_lock(sb);
+ }
INIT_DELAYED_WORK(&journal->j_work, flush_async_commits);
journal->j_work_sb = sb;