lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Btrfs: shared seed device

Browse Source 
This patch makes seed device possible to be shared by
multiple mounted file systems. The sharing is achieved
by cloning seed device's btrfs_fs_devices structure.
Thanks you,

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
This commit is contained in:
Yan Zheng
2008-12-12 10:03:26 -05:00
committed by Chris Mason
parent d2fb3437e4
commit e4404d6e8d
5 changed files with 156 additions and 134 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
fs/btrfs/volumes.h
View File

@@ -93,7 +93,6 @@ struct btrfs_fs_devices {
struct btrfs_fs_devices *seed;
int seeding;
int sprouted;
int opened;
};
@@ -127,7 +126,7 @@ int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
u64 chunk_start, u64 physical, u64 devid,
u64 **logical, int *naddrs, int *stripe_len);
int btrfs_read_sys_array(struct btrfs_root *root, u64 sb_bytenr);
int btrfs_read_sys_array(struct btrfs_root *root);
int btrfs_read_chunk_tree(struct btrfs_root *root);
int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 type);