Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in / Register
Toggle navigation
L
linux
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
Analytics
Analytics
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Commits
Issue Boards
Open sidebar
Kirill Smelkov
linux
Commits
78134d08
Commit
78134d08
authored
Jun 08, 2003
by
Linus Torvalds
Browse files
Options
Browse Files
Download
Plain Diff
Merge
bk://kernel.bkbits.net/davem/net-2.5
into home.transmeta.com:/home/torvalds/v2.5/linux
parents
8ef8f7b5
f767677f
Changes
9
Hide whitespace changes
Inline
Side-by-side
Showing
9 changed files
with
175 additions
and
99 deletions
+175
-99
drivers/md/dm-ioctl.c
drivers/md/dm-ioctl.c
+17
-13
drivers/md/dm-linear.c
drivers/md/dm-linear.c
+2
-2
drivers/md/dm-stripe.c
drivers/md/dm-stripe.c
+7
-6
drivers/md/dm-table.c
drivers/md/dm-table.c
+93
-46
drivers/md/dm-target.c
drivers/md/dm-target.c
+4
-3
drivers/md/dm.c
drivers/md/dm.c
+26
-22
drivers/md/dm.h
drivers/md/dm.h
+13
-2
include/linux/device-mapper.h
include/linux/device-mapper.h
+9
-2
lib/zlib_deflate/deflate.c
lib/zlib_deflate/deflate.c
+4
-3
No files found.
drivers/md/dm-ioctl.c
View file @
78134d08
...
...
@@ -351,7 +351,8 @@ static int next_target(struct dm_target_spec *last, uint32_t next,
static
int
populate_table
(
struct
dm_table
*
table
,
struct
dm_ioctl
*
args
)
{
int
i
=
0
,
r
,
first
=
1
;
int
r
,
first
=
1
;
unsigned
int
i
=
0
;
struct
dm_target_spec
*
spec
;
char
*
params
;
void
*
begin
,
*
end
;
...
...
@@ -380,7 +381,8 @@ static int populate_table(struct dm_table *table, struct dm_ioctl *args)
}
r
=
dm_table_add_target
(
table
,
spec
->
target_type
,
spec
->
sector_start
,
spec
->
length
,
(
sector_t
)
spec
->
sector_start
,
(
sector_t
)
spec
->
length
,
params
);
if
(
r
)
{
DMWARN
(
"internal error adding target to table"
);
...
...
@@ -558,7 +560,7 @@ static int create(struct dm_ioctl *param, struct dm_ioctl *user)
int
r
;
struct
dm_table
*
t
;
struct
mapped_device
*
md
;
int
minor
;
unsigned
int
minor
=
0
;
r
=
check_name
(
param
->
name
);
if
(
r
)
...
...
@@ -574,8 +576,8 @@ static int create(struct dm_ioctl *param, struct dm_ioctl *user)
return
r
;
}
minor
=
(
param
->
flags
&
DM_PERSISTENT_DEV_FLAG
)
?
minor
(
to_kdev_t
(
param
->
dev
))
:
-
1
;
if
(
param
->
flags
&
DM_PERSISTENT_DEV_FLAG
)
minor
=
minor
(
to_kdev_t
(
param
->
dev
))
;
r
=
dm_create
(
minor
,
t
,
&
md
);
if
(
r
)
{
...
...
@@ -584,7 +586,7 @@ static int create(struct dm_ioctl *param, struct dm_ioctl *user)
}
dm_table_put
(
t
);
/* md will have grabbed its own reference */
set_disk_ro
(
dm_disk
(
md
),
(
param
->
flags
&
DM_READONLY_FLAG
));
set_disk_ro
(
dm_disk
(
md
),
(
param
->
flags
&
DM_READONLY_FLAG
)
?
1
:
0
);
r
=
dm_hash_insert
(
param
->
name
,
*
param
->
uuid
?
param
->
uuid
:
NULL
,
md
);
dm_put
(
md
);
...
...
@@ -595,9 +597,9 @@ static int create(struct dm_ioctl *param, struct dm_ioctl *user)
* Build up the status struct for each target
*/
static
int
__status
(
struct
mapped_device
*
md
,
struct
dm_ioctl
*
param
,
char
*
outbuf
,
in
t
*
len
)
char
*
outbuf
,
size_
t
*
len
)
{
int
i
,
num_targets
;
unsigned
int
i
,
num_targets
;
struct
dm_target_spec
*
spec
;
char
*
outptr
;
status_type_t
type
;
...
...
@@ -657,7 +659,7 @@ static int __status(struct mapped_device *md, struct dm_ioctl *param,
static
int
get_status
(
struct
dm_ioctl
*
param
,
struct
dm_ioctl
*
user
)
{
struct
mapped_device
*
md
;
in
t
len
=
0
;
size_
t
len
=
0
;
int
ret
;
char
*
outbuf
=
NULL
;
...
...
@@ -738,7 +740,8 @@ static int wait_device_event(struct dm_ioctl *param, struct dm_ioctl *user)
*/
static
int
dep
(
struct
dm_ioctl
*
param
,
struct
dm_ioctl
*
user
)
{
int
count
,
r
;
int
r
;
unsigned
int
count
;
struct
mapped_device
*
md
;
struct
list_head
*
tmp
;
size_t
len
=
0
;
...
...
@@ -889,7 +892,7 @@ static int reload(struct dm_ioctl *param, struct dm_ioctl *user)
}
dm_table_put
(
t
);
/* md will have taken its own reference */
set_disk_ro
(
dm_disk
(
md
),
(
param
->
flags
&
DM_READONLY_FLAG
));
set_disk_ro
(
dm_disk
(
md
),
(
param
->
flags
&
DM_READONLY_FLAG
)
?
1
:
0
);
dm_put
(
md
);
r
=
info
(
param
,
user
);
...
...
@@ -945,7 +948,7 @@ static ioctl_fn lookup_ioctl(unsigned int cmd)
* As well as checking the version compatibility this always
* copies the kernel interface version out.
*/
static
int
check_version
(
int
cmd
,
struct
dm_ioctl
*
user
)
static
int
check_version
(
unsigned
int
cmd
,
struct
dm_ioctl
*
user
)
{
uint32_t
version
[
3
];
int
r
=
0
;
...
...
@@ -1028,7 +1031,8 @@ static int validate_params(uint cmd, struct dm_ioctl *param)
static
int
ctl_ioctl
(
struct
inode
*
inode
,
struct
file
*
file
,
uint
command
,
ulong
u
)
{
int
r
=
0
,
cmd
;
int
r
=
0
;
unsigned
int
cmd
;
struct
dm_ioctl
*
param
;
struct
dm_ioctl
*
user
=
(
struct
dm_ioctl
*
)
u
;
ioctl_fn
fn
=
NULL
;
...
...
drivers/md/dm-linear.c
View file @
78134d08
...
...
@@ -23,7 +23,7 @@ struct linear_c {
/*
* Construct a linear mapping: <dev_path> <offset>
*/
static
int
linear_ctr
(
struct
dm_target
*
ti
,
int
argc
,
char
**
argv
)
static
int
linear_ctr
(
struct
dm_target
*
ti
,
unsigned
int
argc
,
char
**
argv
)
{
struct
linear_c
*
lc
;
...
...
@@ -76,7 +76,7 @@ static int linear_map(struct dm_target *ti, struct bio *bio)
}
static
int
linear_status
(
struct
dm_target
*
ti
,
status_type_t
type
,
char
*
result
,
int
maxlen
)
char
*
result
,
unsigned
int
maxlen
)
{
struct
linear_c
*
lc
=
(
struct
linear_c
*
)
ti
->
private
;
char
b
[
BDEVNAME_SIZE
];
...
...
drivers/md/dm-stripe.c
View file @
78134d08
...
...
@@ -30,7 +30,7 @@ struct stripe_c {
struct
stripe
stripe
[
0
];
};
static
inline
struct
stripe_c
*
alloc_context
(
int
stripes
)
static
inline
struct
stripe_c
*
alloc_context
(
unsigned
int
stripes
)
{
size_t
len
;
...
...
@@ -47,7 +47,7 @@ static inline struct stripe_c *alloc_context(int stripes)
* Parse a single <dev> <sector> pair
*/
static
int
get_stripe
(
struct
dm_target
*
ti
,
struct
stripe_c
*
sc
,
int
stripe
,
char
**
argv
)
unsigned
int
stripe
,
char
**
argv
)
{
sector_t
start
;
...
...
@@ -91,14 +91,15 @@ static int multiple(sector_t a, sector_t b, sector_t *n)
* Construct a striped mapping.
* <number of stripes> <chunk size (2^^n)> [<dev_path> <offset>]+
*/
static
int
stripe_ctr
(
struct
dm_target
*
ti
,
int
argc
,
char
**
argv
)
static
int
stripe_ctr
(
struct
dm_target
*
ti
,
unsigned
int
argc
,
char
**
argv
)
{
struct
stripe_c
*
sc
;
sector_t
width
;
uint32_t
stripes
;
uint32_t
chunk_size
;
char
*
end
;
int
r
,
i
;
int
r
;
unsigned
int
i
;
if
(
argc
<
2
)
{
ti
->
error
=
"dm-stripe: Not enough arguments"
;
...
...
@@ -204,11 +205,11 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
}
static
int
stripe_status
(
struct
dm_target
*
ti
,
status_type_t
type
,
char
*
result
,
int
maxlen
)
status_type_t
type
,
char
*
result
,
unsigned
int
maxlen
)
{
struct
stripe_c
*
sc
=
(
struct
stripe_c
*
)
ti
->
private
;
int
offset
;
int
i
;
unsigned
int
i
;
char
b
[
BDEVNAME_SIZE
];
switch
(
type
)
{
...
...
drivers/md/dm-table.c
View file @
78134d08
...
...
@@ -23,12 +23,12 @@ struct dm_table {
atomic_t
holders
;
/* btree table */
int
depth
;
int
counts
[
MAX_DEPTH
];
/* in nodes */
unsigned
int
depth
;
unsigned
int
counts
[
MAX_DEPTH
];
/* in nodes */
sector_t
*
index
[
MAX_DEPTH
];
int
num_targets
;
int
num_allocated
;
unsigned
int
num_targets
;
unsigned
int
num_allocated
;
sector_t
*
highs
;
struct
dm_target
*
targets
;
...
...
@@ -55,14 +55,6 @@ struct dm_table {
wait_queue_head_t
eventq
;
};
/*
* Ceiling(n / size)
*/
static
inline
unsigned
long
div_up
(
unsigned
long
n
,
unsigned
long
size
)
{
return
dm_round_up
(
n
,
size
)
/
size
;
}
/*
* Similar to ceiling(log_size(n))
*/
...
...
@@ -71,35 +63,46 @@ static unsigned int int_log(unsigned long n, unsigned long base)
int
result
=
0
;
while
(
n
>
1
)
{
n
=
div_up
(
n
,
base
);
n
=
d
m_d
iv_up
(
n
,
base
);
result
++
;
}
return
result
;
}
#define __HIGH(l, r) if (*(l) < (r)) *(l) = (r)
#define __LOW(l, r) if (*(l) == 0 || *(l) > (r)) *(l) = (r)
/*
* Returns the minimum that is _not_ zero, unless both are zero.
*/
#define min_not_zero(l, r) (l == 0) ? r : ((r == 0) ? l : min(l, r))
/*
* Combine two io_restrictions, always taking the lower value.
*/
static
void
combine_restrictions_low
(
struct
io_restrictions
*
lhs
,
struct
io_restrictions
*
rhs
)
{
__LOW
(
&
lhs
->
max_sectors
,
rhs
->
max_sectors
);
__LOW
(
&
lhs
->
max_phys_segments
,
rhs
->
max_phys_segments
);
__LOW
(
&
lhs
->
max_hw_segments
,
rhs
->
max_hw_segments
);
__HIGH
(
&
lhs
->
hardsect_size
,
rhs
->
hardsect_size
);
__LOW
(
&
lhs
->
max_segment_size
,
rhs
->
max_segment_size
);
__LOW
(
&
lhs
->
seg_boundary_mask
,
rhs
->
seg_boundary_mask
);
lhs
->
max_sectors
=
min_not_zero
(
lhs
->
max_sectors
,
rhs
->
max_sectors
);
lhs
->
max_phys_segments
=
min_not_zero
(
lhs
->
max_phys_segments
,
rhs
->
max_phys_segments
);
lhs
->
max_hw_segments
=
min_not_zero
(
lhs
->
max_hw_segments
,
rhs
->
max_hw_segments
);
lhs
->
hardsect_size
=
max
(
lhs
->
hardsect_size
,
rhs
->
hardsect_size
);
lhs
->
max_segment_size
=
min_not_zero
(
lhs
->
max_segment_size
,
rhs
->
max_segment_size
);
lhs
->
seg_boundary_mask
=
min_not_zero
(
lhs
->
seg_boundary_mask
,
rhs
->
seg_boundary_mask
);
}
/*
* Calculate the index of the child node of the n'th node k'th key.
*/
static
inline
int
get_child
(
int
n
,
int
k
)
static
inline
unsigned
int
get_child
(
unsigned
int
n
,
unsigned
int
k
)
{
return
(
n
*
CHILDREN_PER_NODE
)
+
k
;
}
...
...
@@ -107,7 +110,8 @@ static inline int get_child(int n, int k)
/*
* Return the n'th node of level l from table t.
*/
static
inline
sector_t
*
get_node
(
struct
dm_table
*
t
,
int
l
,
int
n
)
static
inline
sector_t
*
get_node
(
struct
dm_table
*
t
,
unsigned
int
l
,
unsigned
int
n
)
{
return
t
->
index
[
l
]
+
(
n
*
KEYS_PER_NODE
);
}
...
...
@@ -116,7 +120,7 @@ static inline sector_t *get_node(struct dm_table *t, int l, int n)
* Return the highest key that you could lookup from the n'th
* node on level l of the btree.
*/
static
sector_t
high
(
struct
dm_table
*
t
,
int
l
,
int
n
)
static
sector_t
high
(
struct
dm_table
*
t
,
unsigned
int
l
,
unsigned
int
n
)
{
for
(;
l
<
t
->
depth
-
1
;
l
++
)
n
=
get_child
(
n
,
CHILDREN_PER_NODE
-
1
);
...
...
@@ -131,15 +135,15 @@ static sector_t high(struct dm_table *t, int l, int n)
* Fills in a level of the btree based on the highs of the level
* below it.
*/
static
int
setup_btree_index
(
int
l
,
struct
dm_table
*
t
)
static
int
setup_btree_index
(
unsigned
int
l
,
struct
dm_table
*
t
)
{
int
n
,
k
;
unsigned
int
n
,
k
;
sector_t
*
node
;
for
(
n
=
0
;
n
<
t
->
counts
[
l
];
n
++
)
{
for
(
n
=
0
U
;
n
<
t
->
counts
[
l
];
n
++
)
{
node
=
get_node
(
t
,
l
,
n
);
for
(
k
=
0
;
k
<
KEYS_PER_NODE
;
k
++
)
for
(
k
=
0
U
;
k
<
KEYS_PER_NODE
;
k
++
)
node
[
k
]
=
high
(
t
,
l
+
1
,
get_child
(
n
,
k
));
}
...
...
@@ -169,7 +173,7 @@ static void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size)
* highs, and targets are managed as dynamic arrays during a
* table load.
*/
static
int
alloc_targets
(
struct
dm_table
*
t
,
int
num
)
static
int
alloc_targets
(
struct
dm_table
*
t
,
unsigned
int
num
)
{
sector_t
*
n_highs
;
struct
dm_target
*
n_targets
;
...
...
@@ -237,9 +241,7 @@ static void free_devices(struct list_head *devices)
void
table_destroy
(
struct
dm_table
*
t
)
{
int
i
;
DMWARN
(
"destroying table"
);
unsigned
int
i
;
/* destroying the table counts as an event */
dm_table_event
(
t
);
...
...
@@ -481,13 +483,31 @@ int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
request_queue_t
*
q
=
bdev_get_queue
((
*
result
)
->
bdev
);
struct
io_restrictions
*
rs
=
&
ti
->
limits
;
/* combine the device limits low */
__LOW
(
&
rs
->
max_sectors
,
q
->
max_sectors
);
__LOW
(
&
rs
->
max_phys_segments
,
q
->
max_phys_segments
);
__LOW
(
&
rs
->
max_hw_segments
,
q
->
max_hw_segments
);
__HIGH
(
&
rs
->
hardsect_size
,
q
->
hardsect_size
);
__LOW
(
&
rs
->
max_segment_size
,
q
->
max_segment_size
);
__LOW
(
&
rs
->
seg_boundary_mask
,
q
->
seg_boundary_mask
);
/*
* Combine the device limits low.
*
* FIXME: if we move an io_restriction struct
* into q this would just be a call to
* combine_restrictions_low()
*/
rs
->
max_sectors
=
min_not_zero
(
rs
->
max_sectors
,
q
->
max_sectors
);
rs
->
max_phys_segments
=
min_not_zero
(
rs
->
max_phys_segments
,
q
->
max_phys_segments
);
rs
->
max_hw_segments
=
min_not_zero
(
rs
->
max_hw_segments
,
q
->
max_hw_segments
);
rs
->
hardsect_size
=
max
(
rs
->
hardsect_size
,
q
->
hardsect_size
);
rs
->
max_segment_size
=
min_not_zero
(
rs
->
max_segment_size
,
q
->
max_segment_size
);
rs
->
seg_boundary_mask
=
min_not_zero
(
rs
->
seg_boundary_mask
,
q
->
seg_boundary_mask
);
}
return
r
;
...
...
@@ -628,12 +648,13 @@ int dm_table_add_target(struct dm_table *t, const char *type,
static
int
setup_indexes
(
struct
dm_table
*
t
)
{
int
i
,
total
=
0
;
int
i
;
unsigned
int
total
=
0
;
sector_t
*
indexes
;
/* allocate the space for *all* the indexes */
for
(
i
=
t
->
depth
-
2
;
i
>=
0
;
i
--
)
{
t
->
counts
[
i
]
=
div_up
(
t
->
counts
[
i
+
1
],
CHILDREN_PER_NODE
);
t
->
counts
[
i
]
=
d
m_d
iv_up
(
t
->
counts
[
i
+
1
],
CHILDREN_PER_NODE
);
total
+=
t
->
counts
[
i
];
}
...
...
@@ -656,10 +677,11 @@ static int setup_indexes(struct dm_table *t)
*/
int
dm_table_complete
(
struct
dm_table
*
t
)
{
int
leaf_nodes
,
r
=
0
;
int
r
=
0
;
unsigned
int
leaf_nodes
;
/* how many indexes will the btree have ? */
leaf_nodes
=
div_up
(
t
->
num_targets
,
KEYS_PER_NODE
);
leaf_nodes
=
d
m_d
iv_up
(
t
->
num_targets
,
KEYS_PER_NODE
);
t
->
depth
=
1
+
int_log
(
leaf_nodes
,
CHILDREN_PER_NODE
);
/* leaf layer has already been set up */
...
...
@@ -682,7 +704,7 @@ sector_t dm_table_get_size(struct dm_table *t)
return
t
->
num_targets
?
(
t
->
highs
[
t
->
num_targets
-
1
]
+
1
)
:
0
;
}
struct
dm_target
*
dm_table_get_target
(
struct
dm_table
*
t
,
int
index
)
struct
dm_target
*
dm_table_get_target
(
struct
dm_table
*
t
,
unsigned
int
index
)
{
if
(
index
>
t
->
num_targets
)
return
NULL
;
...
...
@@ -695,7 +717,7 @@ struct dm_target *dm_table_get_target(struct dm_table *t, int index)
*/
struct
dm_target
*
dm_table_find_target
(
struct
dm_table
*
t
,
sector_t
sector
)
{
int
l
,
n
=
0
,
k
=
0
;
unsigned
int
l
,
n
=
0
,
k
=
0
;
sector_t
*
node
;
for
(
l
=
0
;
l
<
t
->
depth
;
l
++
)
{
...
...
@@ -744,6 +766,31 @@ void dm_table_add_wait_queue(struct dm_table *t, wait_queue_t *wq)
add_wait_queue
(
&
t
->
eventq
,
wq
);
}
void
dm_table_suspend_targets
(
struct
dm_table
*
t
)
{
int
i
;
for
(
i
=
0
;
i
<
t
->
num_targets
;
i
++
)
{
struct
dm_target
*
ti
=
t
->
targets
+
i
;
if
(
ti
->
type
->
suspend
)
ti
->
type
->
suspend
(
ti
);
}
}
void
dm_table_resume_targets
(
struct
dm_table
*
t
)
{
int
i
;
for
(
i
=
0
;
i
<
t
->
num_targets
;
i
++
)
{
struct
dm_target
*
ti
=
t
->
targets
+
i
;
if
(
ti
->
type
->
resume
)
ti
->
type
->
resume
(
ti
);
}
}
EXPORT_SYMBOL
(
dm_get_device
);
EXPORT_SYMBOL
(
dm_put_device
);
EXPORT_SYMBOL
(
dm_table_event
);
...
...
drivers/md/dm-target.c
View file @
78134d08
...
...
@@ -109,9 +109,10 @@ int dm_register_target(struct target_type *t)
return
-
ENOMEM
;
down_write
(
&
_lock
);
if
(
__find_target_type
(
t
->
name
))
if
(
__find_target_type
(
t
->
name
))
{
kfree
(
ti
);
rv
=
-
EEXIST
;
else
}
else
list_add
(
&
ti
->
list
,
&
_targets
);
up_write
(
&
_lock
);
...
...
@@ -146,7 +147,7 @@ int dm_unregister_target(struct target_type *t)
* io-err: always fails an io, useful for bringing
* up LVs that have holes in them.
*/
static
int
io_err_ctr
(
struct
dm_target
*
ti
,
int
argc
,
char
**
args
)
static
int
io_err_ctr
(
struct
dm_target
*
ti
,
unsigned
int
argc
,
char
**
args
)
{
return
0
;
}
...
...
drivers/md/dm.c
View file @
78134d08
...
...
@@ -17,8 +17,8 @@
static
const
char
*
_name
=
DM_NAME
;
#define MAX_DEVICES 1024
static
int
major
=
0
;
static
int
_major
=
0
;
static
unsigned
int
major
=
0
;
static
unsigned
int
_major
=
0
;
struct
dm_io
{
struct
mapped_device
*
md
;
...
...
@@ -281,9 +281,6 @@ static sector_t max_io_len(struct mapped_device *md,
sector_t
offset
=
sector
-
ti
->
begin
;
sector_t
len
=
ti
->
len
-
offset
;
/* FIXME: obey io_restrictions ! */
/*
* Does the target need to split even further ?
*/
...
...
@@ -524,7 +521,7 @@ static int dm_request(request_queue_t *q, struct bio *bio)
static
spinlock_t
_minor_lock
=
SPIN_LOCK_UNLOCKED
;
static
unsigned
long
_minor_bits
[
MAX_DEVICES
/
BITS_PER_LONG
];
static
void
free_minor
(
int
minor
)
static
void
free_minor
(
unsigned
int
minor
)
{
spin_lock
(
&
_minor_lock
);
clear_bit
(
minor
,
_minor_bits
);
...
...
@@ -534,7 +531,7 @@ static void free_minor(int minor)
/*
* See if the device with a specific minor # is free.
*/
static
int
specific_minor
(
int
minor
)
static
int
specific_minor
(
unsigned
int
minor
)
{
int
r
=
-
EBUSY
;
...
...
@@ -546,21 +543,23 @@ static int specific_minor(int minor)
spin_lock
(
&
_minor_lock
);
if
(
!
test_and_set_bit
(
minor
,
_minor_bits
))
r
=
minor
;
r
=
0
;
spin_unlock
(
&
_minor_lock
);
return
r
;
}
static
int
next_free_minor
(
void
)
static
int
next_free_minor
(
unsigned
int
*
minor
)
{
int
minor
,
r
=
-
EBUSY
;
int
r
=
-
EBUSY
;
unsigned
int
m
;
spin_lock
(
&
_minor_lock
);
minor
=
find_first_zero_bit
(
_minor_bits
,
MAX_DEVICES
);
if
(
minor
!=
MAX_DEVICES
)
{
set_bit
(
minor
,
_minor_bits
);
r
=
minor
;
m
=
find_first_zero_bit
(
_minor_bits
,
MAX_DEVICES
);
if
(
m
!=
MAX_DEVICES
)
{
set_bit
(
m
,
_minor_bits
);
*
minor
=
m
;
r
=
0
;
}
spin_unlock
(
&
_minor_lock
);
...
...
@@ -570,8 +569,9 @@ static int next_free_minor(void)
/*
* Allocate and initialise a blank device with a given minor.
*/
static
struct
mapped_device
*
alloc_dev
(
int
minor
)
static
struct
mapped_device
*
alloc_dev
(
unsigned
int
minor
)
{
int
r
;
struct
mapped_device
*
md
=
kmalloc
(
sizeof
(
*
md
),
GFP_KERNEL
);
if
(
!
md
)
{
...
...
@@ -580,13 +580,12 @@ static struct mapped_device *alloc_dev(int minor)
}
/* get a minor number for the dev */
minor
=
(
minor
<
0
)
?
next_free_minor
(
)
:
specific_minor
(
minor
);
if
(
mino
r
<
0
)
{
r
=
(
minor
<
0
)
?
next_free_minor
(
&
minor
)
:
specific_minor
(
minor
);
if
(
r
<
0
)
{
kfree
(
md
);
return
NULL
;
}
DMWARN
(
"allocating minor %d."
,
minor
);
memset
(
md
,
0
,
sizeof
(
*
md
));
init_rwsem
(
&
md
->
lock
);
atomic_set
(
&
md
->
holders
,
1
);
...
...
@@ -597,7 +596,7 @@ static struct mapped_device *alloc_dev(int minor)
md
->
io_pool
=
mempool_create
(
MIN_IOS
,
mempool_alloc_slab
,
mempool_free_slab
,
_io_cache
);
if
(
!
md
->
io_pool
)
{
free_minor
(
m
d
->
disk
->
first_m
inor
);
free_minor
(
minor
);
kfree
(
md
);
return
NULL
;
}
...
...
@@ -605,7 +604,7 @@ static struct mapped_device *alloc_dev(int minor)
md
->
disk
=
alloc_disk
(
1
);
if
(
!
md
->
disk
)
{
mempool_destroy
(
md
->
io_pool
);
free_minor
(
m
d
->
disk
->
first_m
inor
);
free_minor
(
minor
);
kfree
(
md
);
return
NULL
;
}
...
...
@@ -661,7 +660,8 @@ static void __unbind(struct mapped_device *md)
/*
* Constructor for a new device.
*/
int
dm_create
(
int
minor
,
struct
dm_table
*
table
,
struct
mapped_device
**
result
)
int
dm_create
(
unsigned
int
minor
,
struct
dm_table
*
table
,
struct
mapped_device
**
result
)
{
int
r
;
struct
mapped_device
*
md
;
...
...
@@ -675,6 +675,7 @@ int dm_create(int minor, struct dm_table *table, struct mapped_device **result)
free_dev
(
md
);
return
r
;
}
dm_table_resume_targets
(
md
->
map
);
*
result
=
md
;
return
0
;
...
...
@@ -688,7 +689,8 @@ void dm_get(struct mapped_device *md)
void
dm_put
(
struct
mapped_device
*
md
)
{
if
(
atomic_dec_and_test
(
&
md
->
holders
))
{
DMWARN
(
"destroying md"
);
if
(
!
test_bit
(
DMF_SUSPENDED
,
&
md
->
flags
))
dm_table_suspend_targets
(
md
->
map
);
__unbind
(
md
);
free_dev
(
md
);
}
...
...
@@ -778,6 +780,7 @@ int dm_suspend(struct mapped_device *md)
down_write
(
&
md
->
lock
);
remove_wait_queue
(
&
md
->
wait
,
&
wait
);
set_bit
(
DMF_SUSPENDED
,
&
md
->
flags
);
dm_table_suspend_targets
(
md
->
map
);
up_write
(
&
md
->
lock
);
return
0
;
...
...
@@ -794,6 +797,7 @@ int dm_resume(struct mapped_device *md)
return
-
EINVAL
;
}
dm_table_resume_targets
(
md
->
map
);
clear_bit
(
DMF_SUSPENDED
,
&
md
->
flags
);
clear_bit
(
DMF_BLOCK_IO
,
&
md
->
flags
);
def
=
md
->
deferred
;
...
...
drivers/md/dm.h
View file @
78134d08
...
...
@@ -51,7 +51,8 @@ struct mapped_device;
* Functions for manipulating a struct mapped_device.
* Drop the reference with dm_put when you finish with the object.
*---------------------------------------------------------------*/
int
dm_create
(
int
minor
,
struct
dm_table
*
table
,
struct
mapped_device
**
md
);
int
dm_create
(
unsigned
int
minor
,
struct
dm_table
*
table
,
struct
mapped_device
**
md
);
/*
* Reference counting for md.
...
...
@@ -96,13 +97,15 @@ int dm_table_add_target(struct dm_table *t, const char *type,
int
dm_table_complete
(
struct
dm_table
*
t
);
void
dm_table_event
(
struct
dm_table
*
t
);
sector_t
dm_table_get_size
(
struct
dm_table
*
t
);
struct
dm_target
*
dm_table_get_target
(
struct
dm_table
*
t
,
int
index
);
struct
dm_target
*
dm_table_get_target
(
struct
dm_table
*
t
,
unsigned
int
index
);
struct
dm_target
*
dm_table_find_target
(
struct
dm_table
*
t
,
sector_t
sector
);
void
dm_table_set_restrictions
(
struct
dm_table
*
t
,
struct
request_queue
*
q
);
unsigned
int
dm_table_get_num_targets
(
struct
dm_table
*
t
);
struct
list_head
*
dm_table_get_devices
(
struct
dm_table
*
t
);
int
dm_table_get_mode
(
struct
dm_table
*
t
);
void
dm_table_add_wait_queue
(
struct
dm_table
*
t
,
wait_queue_t
*
wq
);
void
dm_table_suspend_targets
(
struct
dm_table
*
t
);
void
dm_table_resume_targets
(
struct
dm_table
*
t
);
/*-----------------------------------------------------------------
* A registry of target types.
...
...
@@ -131,6 +134,14 @@ static inline unsigned long dm_round_up(unsigned long n, unsigned long size)
return
n
+
(
r
?
(
size
-
r
)
:
0
);
}
/*
* Ceiling(n / size)
*/
static
inline
unsigned
long
dm_div_up
(
unsigned
long
n
,
unsigned
long
size
)
{
return
dm_round_up
(
n
,
size
)
/
size
;
}
/*
* The device-mapper can be driven through one of two interfaces;
* ioctl or filesystem, depending which patch you have applied.
...
...
include/linux/device-mapper.h
View file @
78134d08
...
...
@@ -17,7 +17,8 @@ typedef enum { STATUSTYPE_INFO, STATUSTYPE_TABLE } status_type_t;
* In the constructor the target parameter will already have the
* table, type, begin and len fields filled in.
*/
typedef
int
(
*
dm_ctr_fn
)
(
struct
dm_target
*
target
,
int
argc
,
char
**
argv
);
typedef
int
(
*
dm_ctr_fn
)
(
struct
dm_target
*
target
,
unsigned
int
argc
,
char
**
argv
);
/*
* The destructor doesn't need to free the dm_target, just
...
...
@@ -32,8 +33,12 @@ typedef void (*dm_dtr_fn) (struct dm_target *ti);
* > 0: simple remap complete
*/
typedef
int
(
*
dm_map_fn
)
(
struct
dm_target
*
ti
,
struct
bio
*
bio
);
typedef
void
(
*
dm_suspend_fn
)
(
struct
dm_target
*
ti
);
typedef
void
(
*
dm_resume_fn
)
(
struct
dm_target
*
ti
);
typedef
int
(
*
dm_status_fn
)
(
struct
dm_target
*
ti
,
status_type_t
status_type
,
char
*
result
,
int
maxlen
);
char
*
result
,
unsigned
int
maxlen
);
void
dm_error
(
const
char
*
message
);
...
...
@@ -55,6 +60,8 @@ struct target_type {
dm_ctr_fn
ctr
;
dm_dtr_fn
dtr
;
dm_map_fn
map
;
dm_suspend_fn
suspend
;
dm_resume_fn
resume
;
dm_status_fn
status
;
};
...
...
lib/zlib_deflate/deflate.c
View file @
78134d08
...
...
@@ -872,8 +872,9 @@ static void check_match(
* performed for at least two bytes (required for the zip translate_eol
* option -- not supported here).
*/
static
void
fill_window
(
s
)
deflate_state
*
s
;
static
void
fill_window
(
deflate_state
*
s
)
{
register
unsigned
n
,
m
;
register
Pos
*
p
;
...
...
@@ -1261,7 +1262,7 @@ static block_state deflate_slow(
return
flush
==
Z_FINISH
?
finish_done
:
block_done
;
}
extern
int
zlib_deflate_workspacesize
(
)
extern
int
zlib_deflate_workspacesize
(
void
)
{
return
sizeof
(
deflate_workspace
);
}
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment