From 6a026589ba333185c466c906376fe022a27a53f9 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 9 Feb 2010 14:04:02 -0800 Subject: [PATCH] ceph: fix sync read eof check deadlock If a sync read gets a short result from the OSD, it may need to do a getattr to see if it is short due to reaching end-of-file. The getattr was being done while holding a reference to FILE_RD, which can lead to a deadlock if the MDS is revoking that capability bit and can't process the getattr until it does. We fix this by setting a flag if EOF size validation is needed, and doing the getattr in ceph_aio_read, after the RD cap ref is dropped. If the read needs to be continued, we loop and continue traversing the file. Signed-off-by: Sage Weil --- Reading git-format-patch failed