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Commit dbd646a8 authored by Yehuda Sadeh's avatar Yehuda Sadeh Committed by Sage Weil
Browse files

ceph: writepage grabs and releases inode 



Fixes a deadlock that is triggered due to kswapd,
while the page was locked and the iput couldn't tear
down the address space.

Signed-off-by: default avatarYehuda Sadeh <yehuda@hq.newdream.net>
parent 169e16ce

fs/ceph/addr.c

+6 −1
Original line number Original line Diff line number Diff line
@@ -448,8 +448,13 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc) 




static int ceph_writepage(struct page *page, struct writeback_control *wbc)

static int ceph_writepage(struct page *page, struct writeback_control *wbc)

{

{

	int err = writepage_nounlock(page, wbc);

	int err;

	struct inode *inode = page->mapping->host;

	BUG_ON(!inode);

	igrab(inode);

	err = writepage_nounlock(page, wbc);

	unlock_page(page);

	unlock_page(page);

	iput(inode);

	return err;

	return err;

}

}