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NFSv2: Fix eof handling

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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>
This commit is contained in:
Trond Myklebust 2019-08-26 20:41:16 -04:00
parent 96c4145599
commit 71affe9be4
1 changed files with 2 additions and 1 deletions
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3
fs/nfs/proc.c
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@ -594,7 +594,8 @@ 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;