Messages in this thread Patch in this message | | | Date | Fri, 7 Nov 2008 14:08:23 -0800 | From | Randy Dunlap <> | Subject | [PATCH] DOC: update xip method info |
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From: Marco Stornelli <marco.stornelli@gmail.com>
xip documentation updated: - change "get_xip_page" to "get_xip_mem"; - explain changed function parameters
Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com> cc: Carsten Otte <cotte@de.ibm.com> --- Documentation/filesystems/xip.txt | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
--- linux-next-20081107.orig/Documentation/filesystems/xip.txt +++ linux-next-20081107/Documentation/filesystems/xip.txt @@ -39,10 +39,11 @@ The block device operation is optional, today: - dcssblk: s390 dcss block device driver -An address space operation named get_xip_page is used to retrieve reference -to a struct page. To address the target page, a reference to an address_space, -and a sector number is provided. A 3rd argument indicates whether the -function should allocate blocks if needed. +An address space operation named get_xip_mem is used to retrieve references +to a page frame number and a kernel address. To obtain these values a reference +to an address_space is provided. This function assigns values to the kmem and +pfn parameters. The third argument indicates whether the function should allocate +blocks if needed. This address space operation is mutually exclusive with readpage&writepage that do page cache read/write operations.
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