Trond Myklebust 4b96edea5c NFSv4/pNFS: Fix a layoutget livelock loop
[ Upstream commit e20772cbdf ]

If NFS_LAYOUT_RETURN_REQUESTED is set, but there is no value set for
the layout plh_return_seq, we can end up in a livelock loop in which
every layout segment retrieved by a new call to layoutget is immediately
invalidated by pnfs_layout_need_return().
To get around this, we should just set plh_return_seq to the current
value of the layout stateid's seqid.

Fixes: d474f96104 ("NFS: Don't return layout segments that are in use")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-18 13:40:13 +02:00
2021-09-15 09:50:29 +02:00
2021-09-16 12:51:23 +02:00

Linux kernel
============

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There are various text files in the Documentation/ subdirectory,
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