ext2: convert to mbcache2
The conversion is generally straightforward. We convert filesystem from
a global cache to per-fs one. Similarly to ext4 the tricky part is that
xattr block corresponding to found mbcache entry can get freed before we
get buffer lock for that block. So we have to check whether the entry is
still valid after getting the buffer lock.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 4c69c94..f98ce7e 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -61,6 +61,8 @@
#define rsv_start rsv_window._rsv_start
#define rsv_end rsv_window._rsv_end
+struct mb2_cache;
+
/*
* second extended-fs super-block data in memory
*/
@@ -111,6 +113,7 @@
* of the mount options.
*/
spinlock_t s_lock;
+ struct mb2_cache *s_mb_cache;
};
static inline spinlock_t *