[LogFS] Only write journal if dirty
This prevents unnecessary journal writes. More importantly it prevents
an oops due to a journal write on failed mount.
diff --git a/fs/logfs/logfs.h b/fs/logfs/logfs.h
index 7259211..1297794 100644
--- a/fs/logfs/logfs.h
+++ b/fs/logfs/logfs.h
@@ -82,7 +82,7 @@
/* Read-only filesystem */
#define LOGFS_SB_FLAG_RO 0x0001
-#define LOGFS_SB_FLAG_SEG_ALIAS 0x0002
+#define LOGFS_SB_FLAG_DIRTY 0x0002
#define LOGFS_SB_FLAG_OBJ_ALIAS 0x0004
#define LOGFS_SB_FLAG_SHUTDOWN 0x0008
@@ -526,7 +526,7 @@
void logfs_clear_inode(struct inode *inode);
/* journal.c */
-void logfs_write_anchor(struct inode *inode);
+void logfs_write_anchor(struct super_block *sb);
int logfs_init_journal(struct super_block *sb);
void logfs_cleanup_journal(struct super_block *sb);
int write_alias_journal(struct super_block *sb, u64 ino, u64 bix,
