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(parent: 366d505) | patch
NFSv4.1 do not send LAYOUTRETURN on emtpy plh_segs list
authorAndy Adamson <andros@netapp.com>
Wed, 20 Jun 2012 19:03:34 +0000 (15:03 -0400)
committerTrond Myklebust <Trond.Myklebust@netapp.com>
Mon, 16 Jul 2012 18:39:00 +0000 (14:39 -0400)
commit293b3b065c5ec5d15c3087ca42a52c991d7d8235
tree32b9422aa2d097af2618d225b925535b75492ee0tree | snapshot (tar.gz zip)
parent366d50521c57939e61e25dc27f009367447563e6commit | diff
NFSv4.1 do not send LAYOUTRETURN on emtpy plh_segs list

mark_matching_lsegs_invalid() resets the mds_threshold counters and can
dereference the layout hdr on an initial empty plh_segs list. It returns 0 both
in the case of an initial empty list and in a non-emtpy list that was cleared
by calls to mark_lseg_invalid.

Don't send a LAYOUTRETURN if the list was initially empty.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
fs/nfs/pnfs.c diff | blob | blame | history