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From: Trond Myklebust <trondmy@gmail.com>
To: "J. Bruce Fields" <bfields@redhat.com>
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH 3/9] nfsd: Update the boot verifier on stable writes too.
Date: Mon,  6 Jan 2020 13:40:31 -0500
Message-ID: <20200106184037.563557-4-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20200106184037.563557-3-trond.myklebust@hammerspace.com>

We don't know if the error returned by the fsync() call is
exclusive to the data written by the stable write, so play it
safe.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfsd/vfs.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 218b8293c633..38db4a083375 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -994,8 +994,11 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
 		host_err = vfs_iter_write(file, &iter, &pos, flags);
 		up_read(&nf->nf_rwsem);
 	}
-	if (host_err < 0)
+	if (host_err < 0) {
+		nfsd_reset_boot_verifier(net_generic(SVC_NET(rqstp),
+					 nfsd_net_id));
 		goto out_nfserr;
+	}
 	*cnt = host_err;
 	nfsdstats.io_write += *cnt;
 	fsnotify_modify(file);
-- 
2.24.1


  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-06 18:40 [PATCH 0/9] Fix error reporting for NFS writes Trond Myklebust
2020-01-06 18:40 ` [PATCH 1/9] nfsd: Allow nfsd_vfs_write() to take the nfsd_file as an argument Trond Myklebust
2020-01-06 18:40   ` [PATCH 2/9] nfsd: Fix stable writes Trond Myklebust
2020-01-06 18:40     ` Trond Myklebust [this message]
2020-01-06 18:40       ` [PATCH 4/9] nfsd: Pass the nfsd_file as arguments to nfsd4_clone_file_range() Trond Myklebust
2020-01-06 18:40         ` [PATCH 5/9] nfsd: Ensure exclusion between CLONE and WRITE errors Trond Myklebust
2020-01-06 18:40           ` [PATCH 6/9] sunrpc: Fix potential leaks in sunrpc_cache_unhash() Trond Myklebust
2020-01-06 18:40             ` [PATCH 7/9] sunrpc: clean up cache entry add/remove from hashtable Trond Myklebust
2020-01-06 18:40               ` [PATCH 8/9] nfsd: Ensure sampling of the commit verifier is atomic with the commit Trond Myklebust
2020-01-06 18:40                 ` [PATCH 9/9] nfsd: Ensure sampling of the write verifier is atomic with the write Trond Myklebust
2020-01-22 15:27 ` [PATCH 0/9] Fix error reporting for NFS writes J. Bruce Fields
2020-01-22 17:04   ` J. Bruce Fields

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