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.
Date: Fri Dec 22 11:44:24 AEDT 2006
Inspected by: torvalds@xxxxxxxx
The following file(s) were checked into:
fs/xfs/linux-2.6/xfs_aops.c - 1.138 - changed
- clear_page_dirty() has been removed from the tree, so use
clear_page_dirty_for_io() instead and call set_page_writeback()
after modifying the page dirty state to update the mapping tree
tags correctly for writeback.