BLOCK_INVALIDATEPAGE(9) The Linux VFS BLOCK_INVALIDATEPAGE(9)
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.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 BLOCK_INVALIDATEPAGE(9)
