Commit feb4cc9b authored Nov 07, 2010 by Sage Weil

ceph: re-request max_size if cap auth changes



If the auth cap migrates to another MDS, clear requested_max_size so that
we resend any pending max_size increase requests.  This fixes potential
hangs on writes that extend a file and race with an cap migration between
MDSs.

Signed-off-by: Sage Weil <sage@newdream.net>

parent 912a9b03

fs/ceph/caps.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -2689,6 +2689,11 @@ static void handle_cap_import(struct ceph_mds_client *mdsc,
		NULL /* no caps context */);
		try_flush_caps(inode, session, NULL);
		up_read(&mdsc->snap_rwsem);

		/* make sure we re-request max_size, if necessary */
		spin_lock(&inode->i_lock);
		ci->i_requested_max_size = 0;
		spin_unlock(&inode->i_lock);
		}

		/*

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