diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index cb94310db072bfe2f8299c0c477acdde86f1e280..3d2495e83e622c48e9afdd12939c8cf11b50216b 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -391,7 +391,7 @@ int btrfs_dev_replace_start(struct btrfs_root *root,
args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR;
btrfs_dev_replace_unlock(dev_replace);
- btrfs_wait_all_ordered_extents(root->fs_info);
+ btrfs_wait_ordered_roots(root->fs_info, -1);
/* force writing the updated state information to disk */
trans = btrfs_start_transaction(root, 0);
@@ -466,7 +466,7 @@ static int btrfs_dev_replace_finishing(struct btrfs_fs_info *fs_info,
mutex_unlock(&dev_replace->lock_finishing_cancel_unmount);
return ret;
}
- btrfs_wait_all_ordered_extents(root->fs_info);
+ btrfs_wait_ordered_roots(root->fs_info, -1);
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 83bffbea7d978d778c3561e3f059e7c542423a2b..a21bbf83fdc2e041c1527953827ceef4d9dd345b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4018,7 +4018,7 @@ static void btrfs_writeback_inodes_sb_nr(struct btrfs_root *root,
*/
btrfs_start_all_delalloc_inodes(root->fs_info, 0);
if (!current->journal_info)
- btrfs_wait_all_ordered_extents(root->fs_info);
+ btrfs_wait_ordered_roots(root->fs_info, -1);
}
}
@@ -4050,11 +4050,12 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
long time_left;
unsigned long nr_pages;
int loops;
+ int items;
enum btrfs_reserve_flush_enum flush;
/* Calc the number of the pages we need flush for space reservation */
- to_reclaim = calc_reclaim_items_nr(root, to_reclaim);
- to_reclaim *= EXTENT_SIZE_PER_ITEM;
+ items = calc_reclaim_items_nr(root, to_reclaim);
+ to_reclaim = items * EXTENT_SIZE_PER_ITEM;
trans = (struct btrfs_trans_handle *)current->journal_info;
block_rsv = &root->fs_info->delalloc_block_rsv;
@@ -4066,7 +4067,7 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
if (trans)
return;
if (wait_ordered)
- btrfs_wait_all_ordered_extents(root->fs_info);
+ btrfs_wait_ordered_roots(root->fs_info, items);
return;
}
@@ -4105,7 +4106,7 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
loops++;
if (wait_ordered && !trans) {
- btrfs_wait_all_ordered_extents(root->fs_info);
+ btrfs_wait_ordered_roots(root->fs_info, items);
} else {
time_left = schedule_timeout_killable(1);
if (time_left)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 6523108d29844bf804a9a23cb875342ef5c4dc6e..d4f2861b0d9ead86a239a000a7cd9a0e95028437 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -572,7 +572,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir,
if (ret)
return ret;
- btrfs_wait_ordered_extents(root);
+ btrfs_wait_ordered_extents(root, -1);
pending_snapshot = kzalloc(sizeof(*pending_snapshot), GFP_NOFS);
if (!pending_snapshot)
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 8a5eff36659625530153923184cd5bca95005bbd..25a8f3812f14e0410a95902d2985455313cb1e6f 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -565,10 +565,11 @@ static void btrfs_run_ordered_extent_work(struct btrfs_work *work)
* wait for all the ordered extents in a root. This is done when balancing
* space between drives.
*/
-void btrfs_wait_ordered_extents(struct btrfs_root *root)
+int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr)
{
struct list_head splice, works;
struct btrfs_ordered_extent *ordered, *next;
+ int count = 0;
INIT_LIST_HEAD(&splice);
INIT_LIST_HEAD(&works);
@@ -576,7 +577,7 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root)
mutex_lock(&root->fs_info->ordered_operations_mutex);
spin_lock(&root->ordered_extent_lock);
list_splice_init(&root->ordered_extents, &splice);
- while (!list_empty(&splice)) {
+ while (!list_empty(&splice) && nr) {
ordered = list_first_entry(&splice, struct btrfs_ordered_extent,
root_extent_list);
list_move_tail(&ordered->root_extent_list,
@@ -591,7 +592,11 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root)
cond_resched();
spin_lock(&root->ordered_extent_lock);
+ if (nr != -1)
+ nr--;
+ count++;
}
+ list_splice_tail(&splice, &root->ordered_extents);
spin_unlock(&root->ordered_extent_lock);
list_for_each_entry_safe(ordered, next, &works, work_list) {
@@ -601,18 +606,21 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root)
cond_resched();
}
mutex_unlock(&root->fs_info->ordered_operations_mutex);
+
+ return count;
}
-void btrfs_wait_all_ordered_extents(struct btrfs_fs_info *fs_info)
+void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr)
{
struct btrfs_root *root;
struct list_head splice;
+ int done;
INIT_LIST_HEAD(&splice);
spin_lock(&fs_info->ordered_root_lock);
list_splice_init(&fs_info->ordered_roots, &splice);
- while (!list_empty(&splice)) {
+ while (!list_empty(&splice) && nr) {
root = list_first_entry(&splice, struct btrfs_root,
ordered_root);
root = btrfs_grab_fs_root(root);
@@ -621,10 +629,14 @@ void btrfs_wait_all_ordered_extents(struct btrfs_fs_info *fs_info)
&fs_info->ordered_roots);
spin_unlock(&fs_info->ordered_root_lock);
- btrfs_wait_ordered_extents(root);
+ done = btrfs_wait_ordered_extents(root, nr);
btrfs_put_fs_root(root);
spin_lock(&fs_info->ordered_root_lock);
+ if (nr != -1) {
+ nr -= done;
+ WARN_ON(nr < 0);
+ }
}
spin_unlock(&fs_info->ordered_root_lock);
}
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 3982db1c1b363ad86a1d28c88f4d5d280865d2a1..9b0450f7ac20aa1d5488e2408b80768deb7438ae 100644
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -195,8 +195,8 @@ int btrfs_run_ordered_operations(struct btrfs_trans_handle *trans,
void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode);
-void btrfs_wait_ordered_extents(struct btrfs_root *root);
-void btrfs_wait_all_ordered_extents(struct btrfs_fs_info *fs_info);
+int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr);
+void btrfs_wait_ordered_roots(struct btrfs_fs_info *fs_info, int nr);
void btrfs_get_logged_extents(struct btrfs_root *log, struct inode *inode);
void btrfs_wait_logged_extents(struct btrfs_root *log, u64 transid);
void btrfs_free_logged_extents(struct btrfs_root *log, u64 transid);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 70eca79bae529de2b9dae700ce2555fdafd6ff88..e1b3c2c73c44e32503b9af3ad58d01d3acfb3651 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4227,7 +4227,7 @@ int btrfs_relocate_block_group(struct btrfs_root *extent_root, u64 group_start)
err = ret;
goto out;
}
- btrfs_wait_all_ordered_extents(fs_info);
+ btrfs_wait_ordered_roots(fs_info, -1);
while (1) {
mutex_lock(&fs_info->cleaner_mutex);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1de6d4d67431cfe589f3301b55fb30b73d785ac0..2d8ac1bf0cf9b9d613215000758cbfa312b4962e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -920,7 +920,7 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
return 0;
}
- btrfs_wait_all_ordered_extents(fs_info);
+ btrfs_wait_ordered_roots(fs_info, -1);
trans = btrfs_attach_transaction_barrier(root);
if (IS_ERR(trans)) {
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 277fe812d047d30adc67d023d3da6a96e5684e84..32c100b8c56322b0326327d36c444d6e7c2bdca2 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1636,7 +1636,7 @@ static inline int btrfs_start_delalloc_flush(struct btrfs_fs_info *fs_info)
static inline void btrfs_wait_delalloc_flush(struct btrfs_fs_info *fs_info)
{
if (btrfs_test_opt(fs_info->tree_root, FLUSHONCOMMIT))
- btrfs_wait_all_ordered_extents(fs_info);
+ btrfs_wait_ordered_roots(fs_info, -1);
}
int btrfs_commit_transaction(struct btrfs_trans_handle *trans,