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Btrfs: use helpers for last_trans_log_full_commit instead of opencode 

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Miao Xie 2014-04-02 19:51:06 +08:00 committed by Chris Mason
parent 1f21ef0a34
commit 995946dd29
4 changed files with 36 additions and 27 deletions
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5
fs/btrfs/extent-tree.c
View File

@ -26,10 +26,9 @@
#include <linux/ratelimit.h>
#include <linux/percpu_counter.h>
#include "hash.h"
#include "ctree.h"
#include "tree-log.h"
#include "disk-io.h"
#include "print-tree.h"
#include "transaction.h"
#include "volumes.h"
#include "raid56.h"
#include "locking.h"
@ -8714,7 +8713,7 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans,
extent_root = root->fs_info->extent_root;
root->fs_info->last_trans_log_full_commit = trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
cache = btrfs_create_block_group_cache(root, chunk_offset, size);
if (!cache)

2
fs/btrfs/inode.c
View File

@ -8329,7 +8329,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
BTRFS_I(old_inode)->dir_index = 0ULL;
if (unlikely(old_ino == BTRFS_FIRST_FREE_OBJECTID)) {
/* force full log commit if subvolume involved. */
root->fs_info->last_trans_log_full_commit = trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
} else {
ret = btrfs_insert_inode_ref(trans, dest,
new_dentry->d_name.name,

40
fs/btrfs/tree-log.c
View File

@ -20,13 +20,11 @@
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/list_sort.h>
#include "ctree.h"
#include "transaction.h"
#include "tree-log.h"
#include "disk-io.h"
#include "locking.h"
#include "print-tree.h"
#include "backref.h"
#include "tree-log.h"
#include "hash.h"
/* magic values for the inode_only field in btrfs_log_inode:
@ -144,12 +142,10 @@ static int start_log_trans(struct btrfs_trans_handle *trans,
mutex_lock(&root->log_mutex);
if (root->log_root) {
if (ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) ==
trans->transid) {
if (btrfs_need_log_full_commit(root->fs_info, trans)) {
ret = -EAGAIN;
goto out;
}
if (!root->log_start_pid) {
root->log_start_pid = current->pid;
clear_bit(BTRFS_ROOT_MULTI_LOG_TASKS, &root->state);
@ -2512,8 +2508,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
}
/* bail out if we need to do a full commit */
if (ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) ==
trans->transid) {
if (btrfs_need_log_full_commit(root->fs_info, trans)) {
ret = -EAGAIN;
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&root->log_mutex);
@ -2534,8 +2529,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
blk_finish_plug(&plug);
btrfs_abort_transaction(trans, root, ret);
btrfs_free_logged_extents(log, log_transid);
ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
mutex_unlock(&root->log_mutex);
goto out;
}
@ -2578,8 +2572,8 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
list_del_init(&root_log_ctx.list);
blk_finish_plug(&plug);
ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
if (ret != -ENOSPC) {
btrfs_abort_transaction(trans, root, ret);
mutex_unlock(&log_root_tree->log_mutex);
@ -2623,8 +2617,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
* now that we've moved on to the tree of log tree roots,
* check the full commit flag again
*/
if (ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) ==
trans->transid) {
if (btrfs_need_log_full_commit(root->fs_info, trans)) {
blk_finish_plug(&plug);
btrfs_wait_marked_extents(log, &log->dirty_log_pages, mark);
btrfs_free_logged_extents(log, log_transid);
@ -2638,8 +2631,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
EXTENT_DIRTY | EXTENT_NEW);
blk_finish_plug(&plug);
if (ret) {
ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
btrfs_abort_transaction(trans, root, ret);
btrfs_free_logged_extents(log, log_transid);
mutex_unlock(&log_root_tree->log_mutex);
@ -2668,8 +2660,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
*/
ret = write_ctree_super(trans, root->fs_info->tree_root, 1);
if (ret) {
ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
btrfs_abort_transaction(trans, root, ret);
goto out_wake_log_root;
}
@ -2887,7 +2878,7 @@ fail:
out_unlock:
mutex_unlock(&BTRFS_I(dir)->log_mutex);
if (ret == -ENOSPC) {
root->fs_info->last_trans_log_full_commit = trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
ret = 0;
} else if (ret < 0)
btrfs_abort_transaction(trans, root, ret);
@ -2920,7 +2911,7 @@ int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
dirid, &index);
mutex_unlock(&BTRFS_I(inode)->log_mutex);
if (ret == -ENOSPC) {
root->fs_info->last_trans_log_full_commit = trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
ret = 0;
} else if (ret < 0 && ret != -ENOENT)
btrfs_abort_transaction(trans, root, ret);
@ -4131,8 +4122,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
* make sure any commits to the log are forced
* to be full commits
*/
root->fs_info->last_trans_log_full_commit =
trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
ret = 1;
break;
}
@ -4178,6 +4168,10 @@ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
goto end_no_trans;
}
/*
* The prev transaction commit doesn't complete, we need do
* full commit by ourselves.
*/
if (root->fs_info->last_trans_log_full_commit >
root->fs_info->last_trans_committed) {
ret = 1;
@ -4247,7 +4241,7 @@ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
end_trans:
dput(old_parent);
if (ret < 0) {
root->fs_info->last_trans_log_full_commit = trans->transid;
btrfs_set_log_full_commit(root->fs_info, trans);
ret = 1;
}

16
fs/btrfs/tree-log.h
View File

@ -19,6 +19,9 @@
#ifndef __TREE_LOG_
#define __TREE_LOG_
#include "ctree.h"
#include "transaction.h"
/* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
#define BTRFS_NO_LOG_SYNC 256
@ -35,6 +38,19 @@ static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx)
INIT_LIST_HEAD(&ctx->list);
}
static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans)
{
ACCESS_ONCE(fs_info->last_trans_log_full_commit) = trans->transid;
}
static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
struct btrfs_trans_handle *trans)
{
return ACCESS_ONCE(fs_info->last_trans_log_full_commit) ==
trans->transid;
}
int btrfs_sync_log(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_log_ctx *ctx);
int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);