Re: [PATCH v3 1/1] Btrfs: Check INCOMPAT flags on remount and add helper function
From: Li Zefan <hidden>
Date: 2012-07-23 01:16:02
quoted hunk ↗ jump to hunk
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
quoted hunk ↗ jump to hunk
index a0ee2f8..3a1a700 100644--- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h@@ -3103,6 +3103,19 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *function, unsigned int line, int errno); +static inline void btrfs_chk_lzo_incompat(struct btrfs_root *root)
Isn't btrfs_set_lzo_incompat() is a better name?
+{
+ struct btrfs_super_block *disk_super;
+ u64 features;
+
+ disk_super = root->fs_info->super_copy;
+ features = btrfs_super_incompat_flags(disk_super);
+ if (!(features & BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO)) {
+ features |= BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO;
+ btrfs_set_super_incompat_flags(disk_super, features);
+ }
+}
+