From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>,
Sasha Levin <sashal@kernel.org>,
linux-nfs@vger.kernel.org
Subject: [PATCH AUTOSEL 4.4 11/20] NFSv2: Fix eof handling
Date: Wed, 4 Sep 2019 12:02:54 -0400 [thread overview]
Message-ID: <20190904160303.5062-11-sashal@kernel.org> (raw)
In-Reply-To: <20190904160303.5062-1-sashal@kernel.org>
From: Trond Myklebust <trond.myklebust@hammerspace.com>
[ Upstream commit 71affe9be45a5c60b9772e1b2701710712637274 ]
If we received a reply from the server with a zero length read and
no error, then that implies we are at eof.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/nfs/proc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index b417bbcd97046..80ecdf2ec8b6a 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -588,7 +588,8 @@ static int nfs_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr)
/* Emulate the eof flag, which isn't normally needed in NFSv2
* as it is guaranteed to always return the file attributes
*/
- if (hdr->args.offset + hdr->res.count >= hdr->res.fattr->size)
+ if ((hdr->res.count == 0 && hdr->args.count > 0) ||
+ hdr->args.offset + hdr->res.count >= hdr->res.fattr->size)
hdr->res.eof = 1;
}
return 0;
--
2.20.1
next prev parent reply other threads:[~2019-09-04 16:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190904160303.5062-1-sashal@kernel.org>
2019-09-04 16:02 ` [PATCH AUTOSEL 4.4 04/20] NFSv4: Fix return values for nfs4_file_open() Sasha Levin
2019-09-04 16:02 ` [PATCH AUTOSEL 4.4 05/20] NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup Sasha Levin
2019-09-04 16:02 ` Sasha Levin [this message]
2019-09-04 16:02 ` [PATCH AUTOSEL 4.4 12/20] NFSv2: Fix write regression Sasha Levin
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