[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/segment.c b/fs/logfs/segment.c
index 664cd0d..1a14f99 100644
--- a/fs/logfs/segment.c
+++ b/fs/logfs/segment.c
@@ -352,7 +352,8 @@
int ret;
void *buf;
- BUG_ON(logfs_super(sb)->s_flags & LOGFS_SB_FLAG_SHUTDOWN);
+ super->s_flags |= LOGFS_SB_FLAG_DIRTY;
+ BUG_ON(super->s_flags & LOGFS_SB_FLAG_SHUTDOWN);
do_compress = logfs_inode(inode)->li_flags & LOGFS_IF_COMPRESSED;
if (shadow->gc_level != 0) {
/* temporarily disable compression for indirect blocks */
@@ -653,11 +654,13 @@
int logfs_segment_delete(struct inode *inode, struct logfs_shadow *shadow)
{
struct super_block *sb = inode->i_sb;
+ struct logfs_super *super = logfs_super(sb);
struct logfs_object_header h;
u16 len;
int err;
- BUG_ON(logfs_super(sb)->s_flags & LOGFS_SB_FLAG_SHUTDOWN);
+ super->s_flags |= LOGFS_SB_FLAG_DIRTY;
+ BUG_ON(super->s_flags & LOGFS_SB_FLAG_SHUTDOWN);
BUG_ON(shadow->old_ofs & LOGFS_FULLY_POPULATED);
if (!shadow->old_ofs)
return 0;