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Btrfs: Add support for multiple devices per filesystem

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-03-24 15:01:56 -04:00
parent 7f93bf8d27
commit 0b86a832a1
13 changed files with 1570 additions and 387 deletions
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26
fs/btrfs/inode.c
View file

@ -40,6 +40,7 @@
#include "btrfs_inode.h"
#include "ioctl.h"
#include "print-tree.h"
#include "volumes.h"
struct btrfs_iget_args {
u64 ino;
@ -295,20 +296,20 @@ int btrfs_clear_bit_hook(struct inode *inode, u64 start, u64 end,
return 0;
}
int btrfs_submit_bio_hook(int rw, struct bio *bio)
int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio)
{
struct bio_vec *bvec = bio->bi_io_vec;
struct inode *inode = bvec->bv_page->mapping->host;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
int ret = 0;
if (rw != WRITE)
return 0;
if (rw != WRITE) {
goto mapit;
}
if (btrfs_test_opt(root, NODATASUM) ||
btrfs_test_flag(inode, NODATASUM))
return 0;
btrfs_test_flag(inode, NODATASUM)) {
goto mapit;
}
mutex_lock(&root->fs_info->fs_mutex);
trans = btrfs_start_transaction(root, 1);
@ -317,7 +318,8 @@ int btrfs_submit_bio_hook(int rw, struct bio *bio)
ret = btrfs_end_transaction(trans, root);
BUG_ON(ret);
mutex_unlock(&root->fs_info->fs_mutex);
return ret;
mapit:
return btrfs_map_bio(root, rw, bio);
}
int btrfs_readpage_io_hook(struct page *page, u64 start, u64 end)
@ -406,7 +408,7 @@ void btrfs_read_locked_inode(struct inode *inode)
struct btrfs_path *path;
struct extent_buffer *leaf;
struct btrfs_inode_item *inode_item;
struct btrfs_inode_timespec *tspec;
struct btrfs_timespec *tspec;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key location;
u64 alloc_group_block;
@ -455,7 +457,8 @@ void btrfs_read_locked_inode(struct inode *inode)
BTRFS_I(inode)->flags = btrfs_inode_flags(leaf, inode_item);
if (!BTRFS_I(inode)->block_group) {
BTRFS_I(inode)->block_group = btrfs_find_block_group(root,
NULL, 0, 0, 0);
NULL, 0,
BTRFS_BLOCK_GROUP_METADATA, 0);
}
btrfs_free_path(path);
inode_item = NULL;
@ -1550,7 +1553,8 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
owner = 0;
else
owner = 1;
group = btrfs_find_block_group(root, group, 0, 0, owner);
group = btrfs_find_block_group(root, group, 0,
BTRFS_BLOCK_GROUP_METADATA, owner);
BTRFS_I(inode)->block_group = group;
BTRFS_I(inode)->flags = 0;