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Kirill Smelkov
linux
Commits
80b6794d
Commit
80b6794d
authored
Feb 01, 2008
by
Chris Mason
Browse files
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Plain Diff
Btrfs: Lower stack usage in transaction.c
Signed-off-by:
Chris Mason
<
chris.mason@oracle.com
>
parent
ae9d1285
Changes
1
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Showing
1 changed file
with
24 additions
and
18 deletions
+24
-18
fs/btrfs/transaction.c
fs/btrfs/transaction.c
+24
-18
No files found.
fs/btrfs/transaction.c
View file @
80b6794d
...
@@ -33,7 +33,7 @@ static struct workqueue_struct *trans_wq;
...
@@ -33,7 +33,7 @@ static struct workqueue_struct *trans_wq;
#define BTRFS_ROOT_TRANS_TAG 0
#define BTRFS_ROOT_TRANS_TAG 0
#define BTRFS_ROOT_DEFRAG_TAG 1
#define BTRFS_ROOT_DEFRAG_TAG 1
static
void
put_transaction
(
struct
btrfs_transaction
*
transaction
)
static
noinline
void
put_transaction
(
struct
btrfs_transaction
*
transaction
)
{
{
WARN_ON
(
transaction
->
use_count
==
0
);
WARN_ON
(
transaction
->
use_count
==
0
);
transaction
->
use_count
--
;
transaction
->
use_count
--
;
...
@@ -46,7 +46,7 @@ static void put_transaction(struct btrfs_transaction *transaction)
...
@@ -46,7 +46,7 @@ static void put_transaction(struct btrfs_transaction *transaction)
}
}
}
}
static
int
join_transaction
(
struct
btrfs_root
*
root
)
static
noinline
int
join_transaction
(
struct
btrfs_root
*
root
)
{
{
struct
btrfs_transaction
*
cur_trans
;
struct
btrfs_transaction
*
cur_trans
;
cur_trans
=
root
->
fs_info
->
running_transaction
;
cur_trans
=
root
->
fs_info
->
running_transaction
;
...
@@ -82,7 +82,7 @@ static int join_transaction(struct btrfs_root *root)
...
@@ -82,7 +82,7 @@ static int join_transaction(struct btrfs_root *root)
return
0
;
return
0
;
}
}
static
int
record_root_in_trans
(
struct
btrfs_root
*
root
)
static
noinline
int
record_root_in_trans
(
struct
btrfs_root
*
root
)
{
{
u64
running_trans_id
=
root
->
fs_info
->
running_transaction
->
transid
;
u64
running_trans_id
=
root
->
fs_info
->
running_transaction
->
transid
;
if
(
root
->
ref_cows
&&
root
->
last_trans
<
running_trans_id
)
{
if
(
root
->
ref_cows
&&
root
->
last_trans
<
running_trans_id
)
{
...
@@ -225,8 +225,8 @@ int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
...
@@ -225,8 +225,8 @@ int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
return
0
;
return
0
;
}
}
static
int
wait_for_commit
(
struct
btrfs_root
*
root
,
static
noinline
int
wait_for_commit
(
struct
btrfs_root
*
root
,
struct
btrfs_transaction
*
commit
)
struct
btrfs_transaction
*
commit
)
{
{
DEFINE_WAIT
(
wait
);
DEFINE_WAIT
(
wait
);
mutex_lock
(
&
root
->
fs_info
->
trans_mutex
);
mutex_lock
(
&
root
->
fs_info
->
trans_mutex
);
...
@@ -265,9 +265,9 @@ int btrfs_add_dead_root(struct btrfs_root *root,
...
@@ -265,9 +265,9 @@ int btrfs_add_dead_root(struct btrfs_root *root,
return
0
;
return
0
;
}
}
static
int
add_dirty_roots
(
struct
btrfs_trans_handle
*
trans
,
static
noinline
int
add_dirty_roots
(
struct
btrfs_trans_handle
*
trans
,
struct
radix_tree_root
*
radix
,
struct
radix_tree_root
*
radix
,
struct
list_head
*
list
)
struct
list_head
*
list
)
{
{
struct
dirty_root
*
dirty
;
struct
dirty_root
*
dirty
;
struct
btrfs_root
*
gang
[
8
];
struct
btrfs_root
*
gang
[
8
];
...
@@ -406,8 +406,8 @@ int btrfs_defrag_dirty_roots(struct btrfs_fs_info *info)
...
@@ -406,8 +406,8 @@ int btrfs_defrag_dirty_roots(struct btrfs_fs_info *info)
return
err
;
return
err
;
}
}
static
int
drop_dirty_roots
(
struct
btrfs_root
*
tree_root
,
static
noinline
int
drop_dirty_roots
(
struct
btrfs_root
*
tree_root
,
struct
list_head
*
list
)
struct
list_head
*
list
)
{
{
struct
dirty_root
*
dirty
;
struct
dirty_root
*
dirty
;
struct
btrfs_trans_handle
*
trans
;
struct
btrfs_trans_handle
*
trans
;
...
@@ -529,23 +529,28 @@ int btrfs_write_ordered_inodes(struct btrfs_trans_handle *trans,
...
@@ -529,23 +529,28 @@ int btrfs_write_ordered_inodes(struct btrfs_trans_handle *trans,
return
0
;
return
0
;
}
}
static
int
create_pending_snapshot
(
struct
btrfs_trans_handle
*
trans
,
static
noinline
int
create_pending_snapshot
(
struct
btrfs_trans_handle
*
trans
,
struct
btrfs_fs_info
*
fs_info
,
struct
btrfs_fs_info
*
fs_info
,
struct
btrfs_pending_snapshot
*
pending
)
struct
btrfs_pending_snapshot
*
pending
)
{
{
struct
btrfs_key
key
;
struct
btrfs_key
key
;
struct
btrfs_root_item
new_root_item
;
struct
btrfs_root_item
*
new_root_item
;
struct
btrfs_root
*
tree_root
=
fs_info
->
tree_root
;
struct
btrfs_root
*
tree_root
=
fs_info
->
tree_root
;
struct
btrfs_root
*
root
=
pending
->
root
;
struct
btrfs_root
*
root
=
pending
->
root
;
struct
extent_buffer
*
tmp
;
struct
extent_buffer
*
tmp
;
int
ret
;
int
ret
;
u64
objectid
;
u64
objectid
;
new_root_item
=
kmalloc
(
sizeof
(
*
new_root_item
),
GFP_NOFS
);
if
(
!
new_root_item
)
{
ret
=
-
ENOMEM
;
goto
fail
;
}
ret
=
btrfs_find_free_objectid
(
trans
,
tree_root
,
0
,
&
objectid
);
ret
=
btrfs_find_free_objectid
(
trans
,
tree_root
,
0
,
&
objectid
);
if
(
ret
)
if
(
ret
)
goto
fail
;
goto
fail
;
memcpy
(
&
new_root_item
,
&
root
->
root_item
,
sizeof
(
new_root_item
));
memcpy
(
new_root_item
,
&
root
->
root_item
,
sizeof
(
*
new_root_item
));
key
.
objectid
=
objectid
;
key
.
objectid
=
objectid
;
key
.
offset
=
1
;
key
.
offset
=
1
;
...
@@ -557,10 +562,10 @@ static int create_pending_snapshot(struct btrfs_trans_handle *trans,
...
@@ -557,10 +562,10 @@ static int create_pending_snapshot(struct btrfs_trans_handle *trans,
btrfs_copy_root
(
trans
,
root
,
root
->
node
,
&
tmp
,
objectid
);
btrfs_copy_root
(
trans
,
root
,
root
->
node
,
&
tmp
,
objectid
);
btrfs_set_root_bytenr
(
&
new_root_item
,
tmp
->
start
);
btrfs_set_root_bytenr
(
new_root_item
,
tmp
->
start
);
btrfs_set_root_level
(
&
new_root_item
,
btrfs_header_level
(
tmp
));
btrfs_set_root_level
(
new_root_item
,
btrfs_header_level
(
tmp
));
ret
=
btrfs_insert_root
(
trans
,
root
->
fs_info
->
tree_root
,
&
key
,
ret
=
btrfs_insert_root
(
trans
,
root
->
fs_info
->
tree_root
,
&
key
,
&
new_root_item
);
new_root_item
);
free_extent_buffer
(
tmp
);
free_extent_buffer
(
tmp
);
if
(
ret
)
if
(
ret
)
goto
fail
;
goto
fail
;
...
@@ -581,11 +586,12 @@ static int create_pending_snapshot(struct btrfs_trans_handle *trans,
...
@@ -581,11 +586,12 @@ static int create_pending_snapshot(struct btrfs_trans_handle *trans,
pending
->
name
,
strlen
(
pending
->
name
),
objectid
,
pending
->
name
,
strlen
(
pending
->
name
),
objectid
,
root
->
fs_info
->
sb
->
s_root
->
d_inode
->
i_ino
);
root
->
fs_info
->
sb
->
s_root
->
d_inode
->
i_ino
);
fail:
fail:
kfree
(
new_root_item
);
return
ret
;
return
ret
;
}
}
static
int
create_pending_snapshots
(
struct
btrfs_trans_handle
*
trans
,
static
noinline
int
create_pending_snapshots
(
struct
btrfs_trans_handle
*
trans
,
struct
btrfs_fs_info
*
fs_info
)
struct
btrfs_fs_info
*
fs_info
)
{
{
struct
btrfs_pending_snapshot
*
pending
;
struct
btrfs_pending_snapshot
*
pending
;
struct
list_head
*
head
=
&
trans
->
transaction
->
pending_snapshots
;
struct
list_head
*
head
=
&
trans
->
transaction
->
pending_snapshots
;
...
...
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