tree 6447e8318d2c2a22bebfd0c7e70f825fbdeeebdb
parent 201913ed746c7724a40d33ee5a0b6a1fd2ef3193
author Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1241527926 +0900
committer Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> 1241942682 +0900

nilfs2: ensure to clear dirty state when deleting metadata file block

This would fix the following failure during GC:

 nilfs_cpfile_delete_checkpoints: cannot delete block
 NILFS: GC failed during preparation: cannot delete checkpoints: err=-2

The problem was caused by a break in state consistency between page
cache and btree; the above block was removed from the btree but the
page buffering the block was remaining in the page cache in dirty
state.

This resolves the inconsistency by ensuring to clear dirty state of
the page buffering the deleted block.

Reported-by: David Arendt <admin@prnet.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>