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author | Marco Stornelli <marco.stornelli@gmail.com> | 2008-11-12 21:26:56 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-13 01:17:17 (GMT) |
commit | 084c304980f05833bc8a91b856af7dc7a7bb7d60 (patch) | |
tree | 31190625fec53827679dc35b828f67c546c88d57 /Documentation | |
parent | b67ad18b06701b77ca8bfe9bb760c5c9e765e3cf (diff) | |
download | linux-084c304980f05833bc8a91b856af7dc7a7bb7d60.tar.xz |
DOC: update xip method info
xip documentation updated:
- change "get_xip_page" to "get_xip_mem";
- explain changed function parameters
Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/filesystems/xip.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/filesystems/xip.txt b/Documentation/filesystems/xip.txt index 3cc4010..0466ee5 100644 --- a/Documentation/filesystems/xip.txt +++ b/Documentation/filesystems/xip.txt @@ -39,10 +39,11 @@ The block device operation is optional, these block devices support it as of 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. |