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| author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2009-09-11 18:45:47 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-24 08:47:41 -0700 |
| commit | 820d89b84acdc45a3ab6c37de66f6c444106d9e6 (patch) | |
| tree | a78b1afef0aa72e9d87a1facfb06584915a0ef61 /lib/syscall.c | |
| parent | 25151810b6566162d07be68a9d3d9381a7c83de1 (diff) | |
nfsd: fix hung up of nfs client while sync write data to nfs server
commit a0d24b295aed7a9daf4ca36bd4784e4d40f82303 upstream.
nfsd: fix hung up of nfs client while sync write data to nfs server
Commit 'Short write in nfsd becomes a full write to the client'
(31dec2538e45e9fff2007ea1f4c6bae9f78db724) broken the sync write.
With the following commands to reproduce:
$ mount -t nfs -o sync 192.168.0.21:/nfsroot /mnt
$ cd /mnt
$ echo aaaa > temp.txt
Then nfs client is hung up.
In SYNC mode the server alaways return the write count 0 to the
client. This is because the value of host_err in nfsd_vfs_write()
will be overwrite in SYNC mode by 'host_err=nfsd_sync(file);',
and then we return host_err(which is now 0) as write count.
This patch fixed the problem.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'lib/syscall.c')
0 files changed, 0 insertions, 0 deletions