Trond Myklebust 34681aeddc NFS: nfsiod should not block forever in mempool_alloc() ...

[ Upstream commit 515dcdcd48736576c6f5c197814da6f81c60a21e ]

The concern is that since nfsiod is sometimes required to kick off a
commit, it can get locked up waiting forever in mempool_alloc() instead
of failing gracefully and leaving the commit until later.

Try to allocate from the slab first, with GFP_KERNEL | __GFP_NORETRY,
then fall back to a non-blocking attempt to allocate from the memory
pool.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-04-13 21:01:03 +02:00

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