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[PATCH] Fix XFS after clear_page_dirty() removal 

XFS appears to call clear_page_dirty to get the mapping tree dirty tag
set correctly at the same time the page dirty flag is cleared.  I note
that this can be done by set_page_writeback() if we clear the dirty flag
on the page first when we are writing back the entire page.

Hence it seems to me that the XFS call to clear_page_dirty() could
easily be substituted by clear_page_dirty_for_io() followed by a call to
set_page_writeback() to get the mapping tree tags set correctly after
the page has been marked clean.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Chinner 2006-12-21 10:24:01 +11:00 committed by Linus Torvalds
parent 9280f6822c
commit 921320210b
1 changed files with 2 additions and 2 deletions
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4
fs/xfs/linux-2.6/xfs_aops.c
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@ -341,9 +341,9 @@ xfs_start_page_writeback(
{
ASSERT(PageLocked(page));
ASSERT(!PageWriteback(page));
set_page_writeback(page);
if (clear_dirty)
clear_page_dirty(page);
clear_page_dirty_for_io(page);
set_page_writeback(page);
unlock_page(page);
if (!buffers) {
end_page_writeback(page);