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NFS: Fix an ABBA issue in nfs_lock_and_join_requests()
authorTrond Myklebust <trond.myklebust@primarydata.com>
Mon, 17 Jul 2017 14:29:32 +0000 (10:29 -0400)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Tue, 15 Aug 2017 15:54:46 +0000 (11:54 -0400)
commita0e265bc78010d2d831a968d4cea3c40a0efac8b
tree5dc285fd74410fade30f8fe3236c11010f9567d7tree | snapshot
parent7cb9cd9aa2eafe869935d4168031f1ed376d924ccommit | diff
NFS: Fix an ABBA issue in nfs_lock_and_join_requests()

All other callers of nfs_page_group_lock() appear to already hold the
page lock on the head page, so doing it in the opposite order here
is inefficient, although not deadlock prone since we roll back all
locks on contention.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/write.c diff | blob | history
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