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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-08-08 16:03:13 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-08-08 16:03:13 -0400
commit47fbf7976e0b7d9dcdd799e2a1baba19064d9631 (patch)
tree1d2a0b4d69f331f5f0d82f15be9a1f06b3d80aa1 /fs/nfs/Makefile
parent7de6e28417c65919cf2c1621841a650c4a3afbbd (diff)
NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done
Ever since commit 0a57cdac3f (NFSv4.1 send layoutreturn to fence disconnected data server) we've been sending layoutreturn calls while there is potentially still outstanding I/O to the data servers. The reason we do this is to avoid races between replayed writes to the MDS and the original writes to the DS. When this happens, the BUG_ON() in nfs4_layoutreturn_done can be triggered because it assumes that we would never call layoutreturn without knowing that all I/O to the DS is finished. The fix is to remove the BUG_ON() now that the assumptions behind the test are obsolete. Reported-by: Boaz Harrosh <bharrosh@panasas.com> Reported-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org [>=3.5]
Diffstat (limited to 'fs/nfs/Makefile')
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