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
109aa2e7
Commit
109aa2e7
authored
21 years ago
by
Alexander Viro
Committed by
Linus Torvalds
21 years ago
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
[PATCH] dev_t handling cleanups (7/12)
removed dead code from sparc64 hugetlbpage.c
parent
854b0fe5
No related merge requests found
Changes
1
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
0 additions
and
201 deletions
+0
-201
arch/sparc64/mm/hugetlbpage.c
arch/sparc64/mm/hugetlbpage.c
+0
-201
No files found.
arch/sparc64/mm/hugetlbpage.c
View file @
109aa2e7
...
@@ -380,207 +380,6 @@ int free_hugepages(struct vm_area_struct *mpnt)
...
@@ -380,207 +380,6 @@ int free_hugepages(struct vm_area_struct *mpnt)
return
1
;
return
1
;
}
}
static
struct
inode
*
set_new_inode
(
unsigned
long
len
,
int
prot
,
int
flag
,
int
key
)
{
struct
inode
*
inode
;
int
i
;
for
(
i
=
0
;
i
<
MAX_ID
;
i
++
)
{
if
(
htlbpagek
[
i
].
key
==
0
)
break
;
}
if
(
i
==
MAX_ID
)
return
NULL
;
inode
=
kmalloc
(
sizeof
(
struct
inode
),
GFP_KERNEL
);
if
(
inode
==
NULL
)
return
NULL
;
inode_init_once
(
inode
);
atomic_inc
(
&
inode
->
i_writecount
);
inode
->
i_mapping
=
&
inode
->
i_data
;
inode
->
i_mapping
->
host
=
inode
;
inode
->
i_ino
=
(
unsigned
long
)
key
;
htlbpagek
[
i
].
key
=
key
;
htlbpagek
[
i
].
in
=
inode
;
inode
->
i_uid
=
current
->
fsuid
;
inode
->
i_gid
=
current
->
fsgid
;
inode
->
i_mode
=
prot
;
inode
->
i_size
=
len
;
return
inode
;
}
static
int
check_size_prot
(
struct
inode
*
inode
,
unsigned
long
len
,
int
prot
,
int
flag
)
{
if
(
inode
->
i_uid
!=
current
->
fsuid
)
return
-
1
;
if
(
inode
->
i_gid
!=
current
->
fsgid
)
return
-
1
;
if
(
inode
->
i_size
!=
len
)
return
-
1
;
return
0
;
}
static
int
alloc_shared_hugetlb_pages
(
int
key
,
unsigned
long
addr
,
unsigned
long
len
,
int
prot
,
int
flag
)
{
struct
mm_struct
*
mm
=
current
->
mm
;
struct
vm_area_struct
*
vma
;
struct
inode
*
inode
;
struct
address_space
*
mapping
;
struct
page
*
page
;
int
idx
;
int
retval
=
-
ENOMEM
;
int
newalloc
=
0
;
try_again:
spin_lock
(
&
htlbpage_lock
);
inode
=
find_key_inode
(
key
);
if
(
inode
==
NULL
)
{
if
(
!
capable
(
CAP_SYS_ADMIN
))
{
if
(
!
in_group_p
(
0
))
{
retval
=
-
EPERM
;
goto
out_err
;
}
}
if
(
!
(
flag
&
IPC_CREAT
))
{
retval
=
-
ENOENT
;
goto
out_err
;
}
inode
=
set_new_inode
(
len
,
prot
,
flag
,
key
);
if
(
inode
==
NULL
)
goto
out_err
;
newalloc
=
1
;
}
else
{
if
(
check_size_prot
(
inode
,
len
,
prot
,
flag
)
<
0
)
{
retval
=
-
EINVAL
;
goto
out_err
;
}
else
if
(
atomic_read
(
&
inode
->
i_writecount
))
{
spin_unlock
(
&
htlbpage_lock
);
goto
try_again
;
}
}
spin_unlock
(
&
htlbpage_lock
);
mapping
=
inode
->
i_mapping
;
addr
=
do_mmap_pgoff
(
NULL
,
addr
,
len
,
(
unsigned
long
)
prot
,
MAP_NORESERVE
|
MAP_FIXED
|
MAP_PRIVATE
|
MAP_ANONYMOUS
,
0
);
if
(
IS_ERR
((
void
*
)
addr
))
goto
freeinode
;
vma
=
find_vma
(
mm
,
addr
);
if
(
!
vma
)
{
retval
=
-
EINVAL
;
goto
freeinode
;
}
spin_lock
(
&
mm
->
page_table_lock
);
do
{
pte_t
*
pte
=
huge_pte_alloc_map
(
mm
,
addr
);
if
(
!
pte
||
!
pte_none
(
pte
))
{
if
(
pte
)
pte_unmap
(
pte
);
goto
out
;
}
idx
=
(
addr
-
vma
->
vm_start
)
>>
HPAGE_SHIFT
;
page
=
find_get_page
(
mapping
,
idx
);
if
(
page
==
NULL
)
{
page
=
alloc_hugetlb_page
();
if
(
page
==
NULL
)
{
pte_unmap
(
pte
);
retval
=
-
ENOMEM
;
goto
out
;
}
retval
=
add_to_page_cache
(
page
,
mapping
,
idx
,
GFP_ATOMIC
);
if
(
retval
)
{
pte_unmap
(
pte
);
free_hugetlb_page
(
page
);
goto
out
;
}
}
set_huge_pte
(
mm
,
vma
,
page
,
pte
,
(
vma
->
vm_flags
&
VM_WRITE
));
pte_unmap
(
pte
);
addr
+=
HPAGE_SIZE
;
}
while
(
addr
<
vma
->
vm_end
);
retval
=
0
;
vma
->
vm_flags
|=
(
VM_HUGETLB
|
VM_RESERVED
);
vma
->
vm_ops
=
&
hugetlb_vm_ops
;
spin_unlock
(
&
mm
->
page_table_lock
);
spin_lock
(
&
htlbpage_lock
);
atomic_set
(
&
inode
->
i_writecount
,
0
);
spin_unlock
(
&
htlbpage_lock
);
return
retval
;
out:
if
(
addr
>
vma
->
vm_start
)
{
unsigned
long
raddr
;
raddr
=
vma
->
vm_end
;
vma
->
vm_end
=
addr
;
flush_cache_range
(
vma
,
vma
->
vm_start
,
vma
->
vm_end
);
zap_hugetlb_resources
(
vma
);
flush_tlb_range
(
vma
,
vma
->
vm_start
,
vma
->
vm_end
);
vma
->
vm_end
=
raddr
;
}
spin_unlock
(
&
mm
->
page_table_lock
);
do_munmap
(
mm
,
vma
->
vm_start
,
len
);
if
(
newalloc
)
goto
freeinode
;
return
retval
;
out_err:
spin_unlock
(
&
htlbpage_lock
);
freeinode:
if
(
newalloc
)
{
for
(
idx
=
0
;
idx
<
MAX_ID
;
idx
++
)
{
if
(
htlbpagek
[
idx
].
key
==
inode
->
i_ino
)
{
htlbpagek
[
idx
].
key
=
0
;
htlbpagek
[
idx
].
in
=
NULL
;
break
;
}
}
kfree
(
inode
);
}
return
retval
;
}
static
int
alloc_private_hugetlb_pages
(
int
key
,
unsigned
long
addr
,
unsigned
long
len
,
int
prot
,
int
flag
)
{
if
(
!
capable
(
CAP_SYS_ADMIN
))
{
if
(
!
in_group_p
(
0
))
return
-
EPERM
;
}
addr
=
do_mmap_pgoff
(
NULL
,
addr
,
len
,
prot
,
MAP_NORESERVE
|
MAP_PRIVATE
|
MAP_FIXED
|
MAP_ANONYMOUS
,
0
);
if
(
IS_ERR
((
void
*
)
addr
))
return
-
ENOMEM
;
if
(
make_hugetlb_pages_present
(
addr
,
(
addr
+
len
),
flag
)
<
0
)
{
do_munmap
(
current
->
mm
,
addr
,
len
);
return
-
ENOMEM
;
}
return
0
;
}
int
alloc_hugetlb_pages
(
int
key
,
unsigned
long
addr
,
unsigned
long
len
,
int
prot
,
int
flag
)
{
if
(
key
>
0
)
return
alloc_shared_hugetlb_pages
(
key
,
addr
,
len
,
prot
,
flag
);
return
alloc_private_hugetlb_pages
(
key
,
addr
,
len
,
prot
,
flag
);
}
extern
long
htlbzone_pages
;
extern
long
htlbzone_pages
;
extern
struct
list_head
htlbpage_freelist
;
extern
struct
list_head
htlbpage_freelist
;
...
...
This diff is collapsed.
Click to expand it.
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