Displaying 2 results from an estimated 2 matches for "btrfs_set_fs_incompat".
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__btrfs_set_fs_incompat
2012 Jul 24
1
[PATCH v4] Btrfs: Check INCOMPAT flags on remount and add helper function
...ree.h b/fs/btrfs/ctree.h
index a0ee2f8..5422e54 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3103,6 +3103,23 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *function,
unsigned int line, int errno);
+#define btrfs_set_fs_incompat(__fs_info, opt) \
+ __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
+
+static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
+ u64 flag)
+{
+ struct btrfs_super_block *disk_super;
+ u64 features;
+
+ disk_super = fs_info->super_copy;
+ features = btr...
2013 Apr 11
2
[PATCH 2/2] Btrfs: use a lock to protect incompat/compat flag of the super block
...9;'t use the lock when we mount the fs, because
+ * there is no other task which will update the flag.
+ */
+ spinlock_t super_lock;
struct btrfs_super_block *super_copy;
struct btrfs_super_block *super_for_commit;
struct block_device *__bdev;
@@ -3663,8 +3674,15 @@ static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info,
disk_super = fs_info->super_copy;
features = btrfs_super_incompat_flags(disk_super);
if (!(features & flag)) {
- features |= flag;
- btrfs_set_super_incompat_flags(disk_super, features);
+ spin_lock(&fs_info->super_lock);
+ features = btrfs_sup...