block_invalidatepage

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

block_invalidatepage - invalidate part of all of a buffer-backed page

SYNOPSIS

void block_invalidatepage(struct page * page, unsigned long offset);

ARGUMENTS

page

the page which is affected

offset

the index of the truncation point

DESCRIPTION

block_invalidatepage is called when all or part of the page has become invalidatedby a truncate operation.

block_invalidatepage does not have to release all buffers, but it must ensure that no dirty buffer is left outside offset and that no I/O is underway against any of the blocks which are outside the truncation point. Because the caller is about to free (and possibly reuse) those blocks on-disk.