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staging: lustre: obdclass: add LCT_SERVER_SESSION for server session

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Add LCT_SERVER_SESSION for server session, and separate the
server session flag from LCT_SESSION, so to avoid allocating
session info for client stack for each server request, if
client and server are on the same node.

Signed-off-by: Wang Di <di.wang@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3806
Reviewed-on: http://review.whamcloud.com/7412
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wang Di 2016-04-27 18:20:55 -04:00 committed by Greg Kroah-Hartman
parent ac7af34e67
commit 7f937beb0a
3 changed files with 7 additions and 2 deletions
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4
drivers/staging/lustre/lustre/include/lu_object.h
View File

@ -1005,6 +1005,10 @@ enum lu_context_tag {
* Context for local operations
*/
LCT_LOCAL = 1 << 7,
/**
* session for server thread
**/
LCT_SERVER_SESSION = BIT(8),
/**
* Set when at least one of keys, having values in this context has
* non-NULL lu_context_key::lct_exit() method. This is used to

2
drivers/staging/lustre/lustre/include/obd_class.h
View File

@ -477,7 +477,7 @@ static inline int obd_setup(struct obd_device *obd, struct lustre_cfg *cfg)
struct lu_context session_ctx;
struct lu_env env;
lu_context_init(&session_ctx, LCT_SESSION);
lu_context_init(&session_ctx, LCT_SESSION | LCT_SERVER_SESSION);
session_ctx.lc_thread = NULL;
lu_context_enter(&session_ctx);

3
drivers/staging/lustre/lustre/ptlrpc/service.c
View File

@ -1649,7 +1649,8 @@ ptlrpc_server_handle_request(struct ptlrpc_service_part *svcpt,
at_get(&svcpt->scp_at_estimate));
}
rc = lu_context_init(&request->rq_session, LCT_SESSION | LCT_NOREF);
rc = lu_context_init(&request->rq_session, LCT_SERVER_SESSION |
LCT_NOREF);
if (rc) {
CERROR("Failure to initialize session: %d\n", rc);
goto out_req;