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authorSteve French <sfrench@us.ibm.com>2011-01-20 18:06:34 +0000
committerSteve French <sfrench@us.ibm.com>2011-01-20 18:06:34 +0000
commitfda3594362184383e73f0a2a5fa5b38ac0e04fd8 (patch)
treec196d4a5211044760debd89eec810053f0025e45 /fs/cifs/cifsfs.c
parentc74093b694998d30105d9904686da5e3576497c4 (diff)
[CIFS] cifs: reconnect unresponsive servers
If the server isn't responding to echoes, we don't want to leave tasks hung waiting for it to reply. At that point, we'll want to reconnect so that soft mounts can return an error to userspace quickly. If the client hasn't received a reply after a specified number of echo intervals, assume that the transport is down and attempt to reconnect the socket. The number of echo_intervals to wait before attempting to reconnect is tunable via a module parameter. Setting it to 0, means that the client will never attempt to reconnect. The default is 5. Signed-off-by: Jeff Layton <jlayton@redhat.com>
Diffstat (limited to 'fs/cifs/cifsfs.c')
-rw-r--r--fs/cifs/cifsfs.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index d9f652a522a6..99d777a03dd0 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -77,7 +77,11 @@ unsigned int cifs_max_pending = CIFS_MAX_REQ;
module_param(cifs_max_pending, int, 0);
MODULE_PARM_DESC(cifs_max_pending, "Simultaneous requests to server. "
"Default: 50 Range: 2 to 256");
-
+unsigned short echo_retries = 5;
+module_param(echo_retries, ushort, 0644);
+MODULE_PARM_DESC(echo_retries, "Number of echo attempts before giving up and "
+ "reconnecting server. Default: 5. 0 means "
+ "never reconnect.");
extern mempool_t *cifs_sm_req_poolp;
extern mempool_t *cifs_req_poolp;
extern mempool_t *cifs_mid_poolp;