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btrfs-progs: move transaction implementation out of header 

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-08-28 17:27:08 +02:00
parent 599f46ade3
commit 37c271b216
3 changed files with 52 additions and 30 deletions
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2
Makefile
View File

@ -103,7 +103,7 @@ objects = ctree.o disk-io.o kernel-lib/radix-tree.o extent-tree.o print-tree.o \
qgroup.o free-space-cache.o kernel-lib/list_sort.o props.o \
kernel-shared/ulist.o qgroup-verify.o backref.o string-table.o task-utils.o \
inode.o file.o find-root.o free-space-tree.o help.o send-dump.o \
fsfeatures.o kernel-lib/tables.o kernel-lib/raid56.o
fsfeatures.o kernel-lib/tables.o kernel-lib/raid56.o transaction.o
cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \
cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \
cmds-quota.o cmds-qgroup.o cmds-replace.o cmds-check.o \

49
transaction.c Normal file
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@ -0,0 +1,49 @@
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include "kerncompat.h"
#include "transaction.h"
#include "messages.h"
struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
int num_blocks)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_trans_handle *h = kzalloc(sizeof(*h), GFP_NOFS);
if (!h)
return ERR_PTR(-ENOMEM);
if (root->commit_root) {
error("commit_root aleady set when starting transaction");
kfree(h);
return ERR_PTR(-EINVAL);
}
if (fs_info->running_transaction) {
error("attempt to start transaction over already running one");
kfree(h);
return ERR_PTR(-EINVAL);
}
fs_info->running_transaction = h;
fs_info->generation++;
h->transid = fs_info->generation;
h->blocks_reserved = num_blocks;
root->last_trans = h->transid;
root->commit_root = root->node;
extent_buffer_get(root->node);
return h;
}

31
transaction.h
View File

@ -22,8 +22,6 @@
#include "kerncompat.h"
#include "ctree.h"
#include "messages.h"
struct btrfs_trans_handle {
u64 transid;
u64 alloc_exclude_start;
@ -33,32 +31,7 @@ struct btrfs_trans_handle {
struct btrfs_block_group_cache *block_group;
};
static inline struct btrfs_trans_handle *
btrfs_start_transaction(struct btrfs_root *root, int num_blocks)
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_trans_handle *h = kzalloc(sizeof(*h), GFP_NOFS);
if (!h)
return ERR_PTR(-ENOMEM);
if (root->commit_root) {
error("commit_root aleady set when starting transaction");
kfree(h);
return ERR_PTR(-EINVAL);
}
if (fs_info->running_transaction) {
error("attempt to start transaction over already running one");
kfree(h);
return ERR_PTR(-EINVAL);
}
fs_info->running_transaction = h;
fs_info->generation++;
h->transid = fs_info->generation;
h->blocks_reserved = num_blocks;
root->last_trans = h->transid;
root->commit_root = root->node;
extent_buffer_get(root->node);
return h;
}
struct btrfs_trans_handle* btrfs_start_transaction(struct btrfs_root *root,
int num_blocks);
#endif