diff options
| author | Olga Kornievskaia <aglo@umich.edu> | 2015-09-14 19:54:36 -0400 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2015-12-06 00:49:01 +0100 |
| commit | 88e7783328019d25827c66e233316dfd08812e89 (patch) | |
| tree | f19718cdd25414dd07a858aa611822e24141b6f2 | |
| parent | 44930ae43fd7adc1f3a5f6aa71784b863e5a3907 (diff) | |
Failing to send a CLOSE if file is opened WRONLY and server reboots on a 4.x mount
commit a41cbe86df3afbc82311a1640e20858c0cd7e065 upstream.
A test case is as the description says:
open(foobar, O_WRONLY);
sleep() --> reboot the server
close(foobar)
The bug is because in nfs4state.c in nfs4_reclaim_open_state() a few
line before going to restart, there is
clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &state->flags).
NFS4CLNT_RECLAIM_NOGRACE is a flag for the client states not open
owner states. Value of NFS4CLNT_RECLAIM_NOGRACE is 4 which is the
value of NFS_O_WRONLY_STATE in nfs4_state->flags. So clearing it wipes
out state and when we go to close it, âcall_closeâ doesnât get set as
state flag is not set and CLOSE doesnât go on the wire.
Signed-off-by: Olga Kornievskaia <aglo@umich.edu>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -rw-r--r-- | fs/nfs/nfs4state.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 71ee6f609d5c..614446b2a9dc 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -929,7 +929,7 @@ restart: __func__); } nfs4_put_open_state(state); - clear_bit(NFS4CLNT_RECLAIM_NOGRACE, + clear_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); goto restart; } |