SYNOPSIS
- void block_invalidatepage(struct page * page, unsigned int offset, unsigned int length);
ARGUMENTS
page
-
- the page which is affected
offset
- start of the range to invalidate
length
- length of the range to invalidate
DESCRIPTION
block_invalidatepage is called when all or part of the page has become invalidated by 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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