docs/mm: vmalloc: re-indent kernel-doc comemnts
Some kernel-doc comments in mm/vmalloc.c have leading tab in indentation. This leads to excessive indentation in the generated HTML and to the inconsistency of its layout ([1] vs [2]). Besides, multi-line Note: sections are not handled properly with extra indentation. [1] https://www.kernel.org/doc/html/v4.20/core-api/mm-api.html?#c.vm_map_ram [2] https://www.kernel.org/doc/html/v4.20/core-api/mm-api.html?#c.vfree Link: http://lkml.kernel.org/r/1549549644-4903-2-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Rapoport
Linus Torvalds
Родитель
6d2bef9df7
Коммит
92eac16819
345
mm/vmalloc.c
345
mm/vmalloc.c
|
|
@ -1191,6 +1191,7 @@ void *vm_map_ram(struct page **pages, unsigned int count, int node, pgprot_t pro
|
|||
EXPORT_SYMBOL(vm_map_ram);
|
||||
|
||||
static struct vm_struct *vmlist __initdata;
|
||||
|
||||
/**
|
||||
* vm_area_add_early - add vmap area early during boot
|
||||
* @vm: vm_struct to add
|
||||
|
|
@ -1425,13 +1426,13 @@ struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags,
|
|||
}
|
||||
|
||||
/**
|
||||
* get_vm_area - reserve a contiguous kernel virtual area
|
||||
* @size: size of the area
|
||||
* @flags: %VM_IOREMAP for I/O mappings or VM_ALLOC
|
||||
* get_vm_area - reserve a contiguous kernel virtual area
|
||||
* @size: size of the area
|
||||
* @flags: %VM_IOREMAP for I/O mappings or VM_ALLOC
|
||||
*
|
||||
* Search an area of @size in the kernel virtual mapping area,
|
||||
* and reserved it for out purposes. Returns the area descriptor
|
||||
* on success or %NULL on failure.
|
||||
* Search an area of @size in the kernel virtual mapping area,
|
||||
* and reserved it for out purposes. Returns the area descriptor
|
||||
* on success or %NULL on failure.
|
||||
*/
|
||||
struct vm_struct *get_vm_area(unsigned long size, unsigned long flags)
|
||||
{
|
||||
|
|
@ -1448,12 +1449,12 @@ struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
|
|||
}
|
||||
|
||||
/**
|
||||
* find_vm_area - find a continuous kernel virtual area
|
||||
* @addr: base address
|
||||
* find_vm_area - find a continuous kernel virtual area
|
||||
* @addr: base address
|
||||
*
|
||||
* Search for the kernel VM area starting at @addr, and return it.
|
||||
* It is up to the caller to do all required locking to keep the returned
|
||||
* pointer valid.
|
||||
* Search for the kernel VM area starting at @addr, and return it.
|
||||
* It is up to the caller to do all required locking to keep the returned
|
||||
* pointer valid.
|
||||
*/
|
||||
struct vm_struct *find_vm_area(const void *addr)
|
||||
{
|
||||
|
|
@ -1467,12 +1468,12 @@ struct vm_struct *find_vm_area(const void *addr)
|
|||
}
|
||||
|
||||
/**
|
||||
* remove_vm_area - find and remove a continuous kernel virtual area
|
||||
* @addr: base address
|
||||
* remove_vm_area - find and remove a continuous kernel virtual area
|
||||
* @addr: base address
|
||||
*
|
||||
* Search for the kernel VM area starting at @addr, and remove it.
|
||||
* This function returns the found VM area, but using it is NOT safe
|
||||
* on SMP machines, except for its size or flags.
|
||||
* Search for the kernel VM area starting at @addr, and remove it.
|
||||
* This function returns the found VM area, but using it is NOT safe
|
||||
* on SMP machines, except for its size or flags.
|
||||
*/
|
||||
struct vm_struct *remove_vm_area(const void *addr)
|
||||
{
|
||||
|
|
@ -1552,11 +1553,11 @@ static inline void __vfree_deferred(const void *addr)
|
|||
}
|
||||
|
||||
/**
|
||||
* vfree_atomic - release memory allocated by vmalloc()
|
||||
* @addr: memory base address
|
||||
* vfree_atomic - release memory allocated by vmalloc()
|
||||
* @addr: memory base address
|
||||
*
|
||||
* This one is just like vfree() but can be called in any atomic context
|
||||
* except NMIs.
|
||||
* This one is just like vfree() but can be called in any atomic context
|
||||
* except NMIs.
|
||||
*/
|
||||
void vfree_atomic(const void *addr)
|
||||
{
|
||||
|
|
@ -1578,20 +1579,20 @@ static void __vfree(const void *addr)
|
|||
}
|
||||
|
||||
/**
|
||||
* vfree - release memory allocated by vmalloc()
|
||||
* @addr: memory base address
|
||||
* vfree - release memory allocated by vmalloc()
|
||||
* @addr: memory base address
|
||||
*
|
||||
* Free the virtually continuous memory area starting at @addr, as
|
||||
* obtained from vmalloc(), vmalloc_32() or __vmalloc(). If @addr is
|
||||
* NULL, no operation is performed.
|
||||
* Free the virtually continuous memory area starting at @addr, as
|
||||
* obtained from vmalloc(), vmalloc_32() or __vmalloc(). If @addr is
|
||||
* NULL, no operation is performed.
|
||||
*
|
||||
* Must not be called in NMI context (strictly speaking, only if we don't
|
||||
* have CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG, but making the calling
|
||||
* conventions for vfree() arch-depenedent would be a really bad idea)
|
||||
* Must not be called in NMI context (strictly speaking, only if we don't
|
||||
* have CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG, but making the calling
|
||||
* conventions for vfree() arch-depenedent would be a really bad idea)
|
||||
*
|
||||
* May sleep if called *not* from interrupt context.
|
||||
* May sleep if called *not* from interrupt context.
|
||||
*
|
||||
* NOTE: assumes that the object at @addr has a size >= sizeof(llist_node)
|
||||
* NOTE: assumes that the object at @addr has a size >= sizeof(llist_node)
|
||||
*/
|
||||
void vfree(const void *addr)
|
||||
{
|
||||
|
|
@ -1609,13 +1610,13 @@ void vfree(const void *addr)
|
|||
EXPORT_SYMBOL(vfree);
|
||||
|
||||
/**
|
||||
* vunmap - release virtual mapping obtained by vmap()
|
||||
* @addr: memory base address
|
||||
* vunmap - release virtual mapping obtained by vmap()
|
||||
* @addr: memory base address
|
||||
*
|
||||
* Free the virtually contiguous memory area starting at @addr,
|
||||
* which was created from the page array passed to vmap().
|
||||
* Free the virtually contiguous memory area starting at @addr,
|
||||
* which was created from the page array passed to vmap().
|
||||
*
|
||||
* Must not be called in interrupt context.
|
||||
* Must not be called in interrupt context.
|
||||
*/
|
||||
void vunmap(const void *addr)
|
||||
{
|
||||
|
|
@ -1627,17 +1628,17 @@ void vunmap(const void *addr)
|
|||
EXPORT_SYMBOL(vunmap);
|
||||
|
||||
/**
|
||||
* vmap - map an array of pages into virtually contiguous space
|
||||
* @pages: array of page pointers
|
||||
* @count: number of pages to map
|
||||
* @flags: vm_area->flags
|
||||
* @prot: page protection for the mapping
|
||||
* vmap - map an array of pages into virtually contiguous space
|
||||
* @pages: array of page pointers
|
||||
* @count: number of pages to map
|
||||
* @flags: vm_area->flags
|
||||
* @prot: page protection for the mapping
|
||||
*
|
||||
* Maps @count pages from @pages into contiguous kernel virtual
|
||||
* space.
|
||||
* Maps @count pages from @pages into contiguous kernel virtual
|
||||
* space.
|
||||
*/
|
||||
void *vmap(struct page **pages, unsigned int count,
|
||||
unsigned long flags, pgprot_t prot)
|
||||
unsigned long flags, pgprot_t prot)
|
||||
{
|
||||
struct vm_struct *area;
|
||||
unsigned long size; /* In bytes */
|
||||
|
|
@ -1724,20 +1725,20 @@ fail:
|
|||
}
|
||||
|
||||
/**
|
||||
* __vmalloc_node_range - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
* @align: desired alignment
|
||||
* @start: vm area range start
|
||||
* @end: vm area range end
|
||||
* @gfp_mask: flags for the page level allocator
|
||||
* @prot: protection mask for the allocated pages
|
||||
* @vm_flags: additional vm area flags (e.g. %VM_NO_GUARD)
|
||||
* @node: node to use for allocation or NUMA_NO_NODE
|
||||
* @caller: caller's return address
|
||||
* __vmalloc_node_range - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
* @align: desired alignment
|
||||
* @start: vm area range start
|
||||
* @end: vm area range end
|
||||
* @gfp_mask: flags for the page level allocator
|
||||
* @prot: protection mask for the allocated pages
|
||||
* @vm_flags: additional vm area flags (e.g. %VM_NO_GUARD)
|
||||
* @node: node to use for allocation or NUMA_NO_NODE
|
||||
* @caller: caller's return address
|
||||
*
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator with @gfp_mask flags. Map them into contiguous
|
||||
* kernel virtual space, using a pagetable protection of @prot.
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator with @gfp_mask flags. Map them into contiguous
|
||||
* kernel virtual space, using a pagetable protection of @prot.
|
||||
*/
|
||||
void *__vmalloc_node_range(unsigned long size, unsigned long align,
|
||||
unsigned long start, unsigned long end, gfp_t gfp_mask,
|
||||
|
|
@ -1788,24 +1789,23 @@ EXPORT_SYMBOL_GPL(__vmalloc_node_range);
|
|||
#endif
|
||||
|
||||
/**
|
||||
* __vmalloc_node - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
* @align: desired alignment
|
||||
* @gfp_mask: flags for the page level allocator
|
||||
* @prot: protection mask for the allocated pages
|
||||
* @node: node to use for allocation or NUMA_NO_NODE
|
||||
* @caller: caller's return address
|
||||
* __vmalloc_node - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
* @align: desired alignment
|
||||
* @gfp_mask: flags for the page level allocator
|
||||
* @prot: protection mask for the allocated pages
|
||||
* @node: node to use for allocation or NUMA_NO_NODE
|
||||
* @caller: caller's return address
|
||||
*
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator with @gfp_mask flags. Map them into contiguous
|
||||
* kernel virtual space, using a pagetable protection of @prot.
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator with @gfp_mask flags. Map them into contiguous
|
||||
* kernel virtual space, using a pagetable protection of @prot.
|
||||
*
|
||||
* Reclaim modifiers in @gfp_mask - __GFP_NORETRY, __GFP_RETRY_MAYFAIL
|
||||
* and __GFP_NOFAIL are not supported
|
||||
*
|
||||
* Any use of gfp flags outside of GFP_KERNEL should be consulted
|
||||
* with mm people.
|
||||
* Reclaim modifiers in @gfp_mask - __GFP_NORETRY, __GFP_RETRY_MAYFAIL
|
||||
* and __GFP_NOFAIL are not supported
|
||||
*
|
||||
* Any use of gfp flags outside of GFP_KERNEL should be consulted
|
||||
* with mm people.
|
||||
*/
|
||||
static void *__vmalloc_node(unsigned long size, unsigned long align,
|
||||
gfp_t gfp_mask, pgprot_t prot,
|
||||
|
|
@ -1837,13 +1837,14 @@ void *__vmalloc_node_flags_caller(unsigned long size, int node, gfp_t flags,
|
|||
}
|
||||
|
||||
/**
|
||||
* vmalloc - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
* vmalloc - allocate virtually contiguous memory
|
||||
* @size: allocation size
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
*/
|
||||
void *vmalloc(unsigned long size)
|
||||
{
|
||||
|
|
@ -1853,14 +1854,15 @@ void *vmalloc(unsigned long size)
|
|||
EXPORT_SYMBOL(vmalloc);
|
||||
|
||||
/**
|
||||
* vzalloc - allocate virtually contiguous memory with zero fill
|
||||
* @size: allocation size
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
* The memory allocated is set to zero.
|
||||
* vzalloc - allocate virtually contiguous memory with zero fill
|
||||
* @size: allocation size
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
* The memory allocated is set to zero.
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
*/
|
||||
void *vzalloc(unsigned long size)
|
||||
{
|
||||
|
|
@ -1886,15 +1888,15 @@ void *vmalloc_user(unsigned long size)
|
|||
EXPORT_SYMBOL(vmalloc_user);
|
||||
|
||||
/**
|
||||
* vmalloc_node - allocate memory on a specific node
|
||||
* @size: allocation size
|
||||
* @node: numa node
|
||||
* vmalloc_node - allocate memory on a specific node
|
||||
* @size: allocation size
|
||||
* @node: numa node
|
||||
*
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
* Allocate enough pages to cover @size from the page level
|
||||
* allocator and map them into contiguous kernel virtual space.
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
*/
|
||||
void *vmalloc_node(unsigned long size, int node)
|
||||
{
|
||||
|
|
@ -1923,17 +1925,16 @@ void *vzalloc_node(unsigned long size, int node)
|
|||
EXPORT_SYMBOL(vzalloc_node);
|
||||
|
||||
/**
|
||||
* vmalloc_exec - allocate virtually contiguous, executable memory
|
||||
* @size: allocation size
|
||||
* vmalloc_exec - allocate virtually contiguous, executable memory
|
||||
* @size: allocation size
|
||||
*
|
||||
* Kernel-internal function to allocate enough pages to cover @size
|
||||
* the page level allocator and map them into contiguous and
|
||||
* executable kernel virtual space.
|
||||
* Kernel-internal function to allocate enough pages to cover @size
|
||||
* the page level allocator and map them into contiguous and
|
||||
* executable kernel virtual space.
|
||||
*
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
* For tight control over page level allocator and protection flags
|
||||
* use __vmalloc() instead.
|
||||
*/
|
||||
|
||||
void *vmalloc_exec(unsigned long size)
|
||||
{
|
||||
return __vmalloc_node(size, 1, GFP_KERNEL, PAGE_KERNEL_EXEC,
|
||||
|
|
@ -1953,11 +1954,11 @@ void *vmalloc_exec(unsigned long size)
|
|||
#endif
|
||||
|
||||
/**
|
||||
* vmalloc_32 - allocate virtually contiguous memory (32bit addressable)
|
||||
* @size: allocation size
|
||||
* vmalloc_32 - allocate virtually contiguous memory (32bit addressable)
|
||||
* @size: allocation size
|
||||
*
|
||||
* Allocate enough 32bit PA addressable pages to cover @size from the
|
||||
* page level allocator and map them into contiguous kernel virtual space.
|
||||
* Allocate enough 32bit PA addressable pages to cover @size from the
|
||||
* page level allocator and map them into contiguous kernel virtual space.
|
||||
*/
|
||||
void *vmalloc_32(unsigned long size)
|
||||
{
|
||||
|
|
@ -1968,7 +1969,7 @@ EXPORT_SYMBOL(vmalloc_32);
|
|||
|
||||
/**
|
||||
* vmalloc_32_user - allocate zeroed virtually contiguous 32bit memory
|
||||
* @size: allocation size
|
||||
* @size: allocation size
|
||||
*
|
||||
* The resulting memory area is 32bit addressable and zeroed so it can be
|
||||
* mapped to userspace without leaking data.
|
||||
|
|
@ -2064,31 +2065,29 @@ static int aligned_vwrite(char *buf, char *addr, unsigned long count)
|
|||
}
|
||||
|
||||
/**
|
||||
* vread() - read vmalloc area in a safe way.
|
||||
* @buf: buffer for reading data
|
||||
* @addr: vm address.
|
||||
* @count: number of bytes to be read.
|
||||
* vread() - read vmalloc area in a safe way.
|
||||
* @buf: buffer for reading data
|
||||
* @addr: vm address.
|
||||
* @count: number of bytes to be read.
|
||||
*
|
||||
* Returns # of bytes which addr and buf should be increased.
|
||||
* (same number to @count). Returns 0 if [addr...addr+count) doesn't
|
||||
* includes any intersect with alive vmalloc area.
|
||||
* Returns # of bytes which addr and buf should be increased.
|
||||
* (same number to @count). Returns 0 if [addr...addr+count) doesn't
|
||||
* includes any intersect with alive vmalloc area.
|
||||
*
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* copy data from that area to a given buffer. If the given memory range
|
||||
* of [addr...addr+count) includes some valid address, data is copied to
|
||||
* proper area of @buf. If there are memory holes, they'll be zero-filled.
|
||||
* IOREMAP area is treated as memory hole and no copy is done.
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* copy data from that area to a given buffer. If the given memory range
|
||||
* of [addr...addr+count) includes some valid address, data is copied to
|
||||
* proper area of @buf. If there are memory holes, they'll be zero-filled.
|
||||
* IOREMAP area is treated as memory hole and no copy is done.
|
||||
*
|
||||
* If [addr...addr+count) doesn't includes any intersects with alive
|
||||
* vm_struct area, returns 0. @buf should be kernel's buffer.
|
||||
*
|
||||
* Note: In usual ops, vread() is never necessary because the caller
|
||||
* should know vmalloc() area is valid and can use memcpy().
|
||||
* This is for routines which have to access vmalloc area without
|
||||
* any informaion, as /dev/kmem.
|
||||
* If [addr...addr+count) doesn't includes any intersects with alive
|
||||
* vm_struct area, returns 0. @buf should be kernel's buffer.
|
||||
*
|
||||
* Note: In usual ops, vread() is never necessary because the caller
|
||||
* should know vmalloc() area is valid and can use memcpy().
|
||||
* This is for routines which have to access vmalloc area without
|
||||
* any informaion, as /dev/kmem.
|
||||
*/
|
||||
|
||||
long vread(char *buf, char *addr, unsigned long count)
|
||||
{
|
||||
struct vmap_area *va;
|
||||
|
|
@ -2145,31 +2144,30 @@ finished:
|
|||
}
|
||||
|
||||
/**
|
||||
* vwrite() - write vmalloc area in a safe way.
|
||||
* @buf: buffer for source data
|
||||
* @addr: vm address.
|
||||
* @count: number of bytes to be read.
|
||||
* vwrite() - write vmalloc area in a safe way.
|
||||
* @buf: buffer for source data
|
||||
* @addr: vm address.
|
||||
* @count: number of bytes to be read.
|
||||
*
|
||||
* Returns # of bytes which addr and buf should be incresed.
|
||||
* (same number to @count).
|
||||
* If [addr...addr+count) doesn't includes any intersect with valid
|
||||
* vmalloc area, returns 0.
|
||||
* Returns # of bytes which addr and buf should be incresed.
|
||||
* (same number to @count).
|
||||
* If [addr...addr+count) doesn't includes any intersect with valid
|
||||
* vmalloc area, returns 0.
|
||||
*
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* copy data from a buffer to the given addr. If specified range of
|
||||
* [addr...addr+count) includes some valid address, data is copied from
|
||||
* proper area of @buf. If there are memory holes, no copy to hole.
|
||||
* IOREMAP area is treated as memory hole and no copy is done.
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* copy data from a buffer to the given addr. If specified range of
|
||||
* [addr...addr+count) includes some valid address, data is copied from
|
||||
* proper area of @buf. If there are memory holes, no copy to hole.
|
||||
* IOREMAP area is treated as memory hole and no copy is done.
|
||||
*
|
||||
* If [addr...addr+count) doesn't includes any intersects with alive
|
||||
* vm_struct area, returns 0. @buf should be kernel's buffer.
|
||||
* If [addr...addr+count) doesn't includes any intersects with alive
|
||||
* vm_struct area, returns 0. @buf should be kernel's buffer.
|
||||
*
|
||||
* Note: In usual ops, vwrite() is never necessary because the caller
|
||||
* should know vmalloc() area is valid and can use memcpy().
|
||||
* This is for routines which have to access vmalloc area without
|
||||
* any informaion, as /dev/kmem.
|
||||
* Note: In usual ops, vwrite() is never necessary because the caller
|
||||
* should know vmalloc() area is valid and can use memcpy().
|
||||
* This is for routines which have to access vmalloc area without
|
||||
* any informaion, as /dev/kmem.
|
||||
*/
|
||||
|
||||
long vwrite(char *buf, char *addr, unsigned long count)
|
||||
{
|
||||
struct vmap_area *va;
|
||||
|
|
@ -2221,20 +2219,20 @@ finished:
|
|||
}
|
||||
|
||||
/**
|
||||
* remap_vmalloc_range_partial - map vmalloc pages to userspace
|
||||
* @vma: vma to cover
|
||||
* @uaddr: target user address to start at
|
||||
* @kaddr: virtual address of vmalloc kernel memory
|
||||
* @size: size of map area
|
||||
* remap_vmalloc_range_partial - map vmalloc pages to userspace
|
||||
* @vma: vma to cover
|
||||
* @uaddr: target user address to start at
|
||||
* @kaddr: virtual address of vmalloc kernel memory
|
||||
* @size: size of map area
|
||||
*
|
||||
* Returns: 0 for success, -Exxx on failure
|
||||
* Returns: 0 for success, -Exxx on failure
|
||||
*
|
||||
* This function checks that @kaddr is a valid vmalloc'ed area,
|
||||
* and that it is big enough to cover the range starting at
|
||||
* @uaddr in @vma. Will return failure if that criteria isn't
|
||||
* met.
|
||||
* This function checks that @kaddr is a valid vmalloc'ed area,
|
||||
* and that it is big enough to cover the range starting at
|
||||
* @uaddr in @vma. Will return failure if that criteria isn't
|
||||
* met.
|
||||
*
|
||||
* Similar to remap_pfn_range() (see mm/memory.c)
|
||||
* Similar to remap_pfn_range() (see mm/memory.c)
|
||||
*/
|
||||
int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr,
|
||||
void *kaddr, unsigned long size)
|
||||
|
|
@ -2276,18 +2274,18 @@ int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr,
|
|||
EXPORT_SYMBOL(remap_vmalloc_range_partial);
|
||||
|
||||
/**
|
||||
* remap_vmalloc_range - map vmalloc pages to userspace
|
||||
* @vma: vma to cover (map full range of vma)
|
||||
* @addr: vmalloc memory
|
||||
* @pgoff: number of pages into addr before first page to map
|
||||
* remap_vmalloc_range - map vmalloc pages to userspace
|
||||
* @vma: vma to cover (map full range of vma)
|
||||
* @addr: vmalloc memory
|
||||
* @pgoff: number of pages into addr before first page to map
|
||||
*
|
||||
* Returns: 0 for success, -Exxx on failure
|
||||
* Returns: 0 for success, -Exxx on failure
|
||||
*
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* that it is big enough to cover the vma. Will return failure if
|
||||
* that criteria isn't met.
|
||||
* This function checks that addr is a valid vmalloc'ed area, and
|
||||
* that it is big enough to cover the vma. Will return failure if
|
||||
* that criteria isn't met.
|
||||
*
|
||||
* Similar to remap_pfn_range() (see mm/memory.c)
|
||||
* Similar to remap_pfn_range() (see mm/memory.c)
|
||||
*/
|
||||
int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
|
||||
unsigned long pgoff)
|
||||
|
|
@ -2319,18 +2317,18 @@ static int f(pte_t *pte, pgtable_t table, unsigned long addr, void *data)
|
|||
}
|
||||
|
||||
/**
|
||||
* alloc_vm_area - allocate a range of kernel address space
|
||||
* @size: size of the area
|
||||
* @ptes: returns the PTEs for the address space
|
||||
* alloc_vm_area - allocate a range of kernel address space
|
||||
* @size: size of the area
|
||||
* @ptes: returns the PTEs for the address space
|
||||
*
|
||||
* Returns: NULL on failure, vm_struct on success
|
||||
* Returns: NULL on failure, vm_struct on success
|
||||
*
|
||||
* This function reserves a range of kernel address space, and
|
||||
* allocates pagetables to map that range. No actual mappings
|
||||
* are created.
|
||||
* This function reserves a range of kernel address space, and
|
||||
* allocates pagetables to map that range. No actual mappings
|
||||
* are created.
|
||||
*
|
||||
* If @ptes is non-NULL, pointers to the PTEs (in init_mm)
|
||||
* allocated for the VM area are returned.
|
||||
* If @ptes is non-NULL, pointers to the PTEs (in init_mm)
|
||||
* allocated for the VM area are returned.
|
||||
*/
|
||||
struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes)
|
||||
{
|
||||
|
|
@ -2756,4 +2754,3 @@ static int __init proc_vmalloc_init(void)
|
|||
module_init(proc_vmalloc_init);
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче