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authorMarco Stornelli <marco.stornelli@gmail.com>2008-11-12 16:26:56 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-12 20:17:17 -0500
commit084c304980f05833bc8a91b856af7dc7a7bb7d60 (patch)
tree31190625fec53827679dc35b828f67c546c88d57 /Documentation/filesystems/xip.txt
parentb67ad18b06701b77ca8bfe9bb760c5c9e765e3cf (diff)
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/filesystems/xip.txt')
-rw-r--r--Documentation/filesystems/xip.txt9
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/filesystems/xip.txt b/Documentation/filesystems/xip.txt
index 3cc4010521a0..0466ee569278 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
39today: 39today:
40- dcssblk: s390 dcss block device driver 40- dcssblk: s390 dcss block device driver
41 41
42An address space operation named get_xip_page is used to retrieve reference 42An address space operation named get_xip_mem is used to retrieve references
43to a struct page. To address the target page, a reference to an address_space, 43to a page frame number and a kernel address. To obtain these values a reference
44and a sector number is provided. A 3rd argument indicates whether the 44to an address_space is provided. This function assigns values to the kmem and
45function should allocate blocks if needed. 45pfn parameters. The third argument indicates whether the function should allocate
46blocks if needed.
46 47
47This address space operation is mutually exclusive with readpage&writepage that 48This address space operation is mutually exclusive with readpage&writepage that
48do page cache read/write operations. 49do page cache read/write operations.