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block_invalidatepage
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
block_invalidatepage - invalidate part of all of a buffer-backed pageSYNOPSIS
- 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.
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