pNFS: Ensure we check layout segment validity in the pg_init() callback
authorTrond Myklebust <trond.myklebust@primarydata.com>
Tue, 25 Apr 2017 14:56:19 +0000 (10:56 -0400)
committerTrond Myklebust <trond.myklebust@primarydata.com>
Tue, 25 Apr 2017 14:56:19 +0000 (10:56 -0400)
commitb3230e80a6d115d2eb50fe3f4794ad04d84766de
treec0b55ff70d1643c37656e44b87d9f18e3256b58f
parentf30cb757f680f965ba8a2e53cb3588052a01aeb5
pNFS: Ensure we check layout segment validity in the pg_init() callback

If we have a layout segment cached in pgio->pg_lseg, we should check it
for validity before reusing it in a new RPC request. Otherwise, if we
recoalesce, we can end up looping forever.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
fs/nfs/filelayout/filelayout.c
fs/nfs/flexfilelayout/flexfilelayout.c
fs/nfs/pnfs.c
fs/nfs/pnfs.h