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Commit b97fa87f authored by Bruce Korb's avatar Bruce Korb Committed by Greg Kroah-Hartman
Browse files

staging: lustre: ldlm: update comments about ldlm l_flags 



Add and update documentation about some of the ldlm l_flags.

Signed-off-by: default avatarBruce Korb <bruce.korb@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2906


Reviewed-by: default avatarKeith Mannthey <Keith.Mannthey@intel.com>
Reviewed-on: http://review.whamcloud.com/7963


Reviewed-by: default avatarDoug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: default avatarAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent efceaf7c

drivers/staging/lustre/lustre/include/lustre_dlm_flags.h

+7 −7
Original line number Diff line number Diff line
@@ -198,7 +198,7 @@ 
#define ldlm_set_cancel(_l)             LDLM_SET_FLAG((_l), 1ULL << 36)

#define ldlm_clear_cancel(_l)           LDLM_CLEAR_FLAG((_l), 1ULL << 36)



/** whatever it might mean */

/** whatever it might mean -- never transmitted? */

#define LDLM_FL_LOCAL_ONLY              0x0000002000000000ULL /* bit 37 */

#define ldlm_is_local_only(_l)          LDLM_TEST_FLAG((_l), 1ULL << 37)

#define ldlm_set_local_only(_l)         LDLM_SET_FLAG((_l), 1ULL << 37)
@@ -281,18 +281,18 @@ 
 * has canceled this lock and is waiting for rpc_lock which is taken by

 * the first operation. LDLM_FL_BL_AST is set by ldlm_callback_handler() in

 * the lock to prevent the Early Lock Cancel (ELC) code from cancelling it.

 *

 * LDLM_FL_BL_DONE is to be set by ldlm_cancel_callback() when lock cache is

 * dropped to let ldlm_callback_handler() return EINVAL to the server. It

 * is used when ELC RPC is already prepared and is waiting for rpc_lock,

 * too late to send a separate CANCEL RPC.

 */

#define LDLM_FL_BL_AST                  0x0000400000000000ULL /* bit 46 */

#define ldlm_is_bl_ast(_l)              LDLM_TEST_FLAG((_l), 1ULL << 46)

#define ldlm_set_bl_ast(_l)             LDLM_SET_FLAG((_l), 1ULL << 46)

#define ldlm_clear_bl_ast(_l)           LDLM_CLEAR_FLAG((_l), 1ULL << 46)



/** whatever it might mean */

/**

 * Set by ldlm_cancel_callback() when lock cache is dropped to let

 * ldlm_callback_handler() return EINVAL to the server. It is used when

 * ELC RPC is already prepared and is waiting for rpc_lock, too late to

 * send a separate CANCEL RPC.

 */

#define LDLM_FL_BL_DONE                 0x0000800000000000ULL /* bit 47 */

#define ldlm_is_bl_done(_l)             LDLM_TEST_FLAG((_l), 1ULL << 47)

#define ldlm_set_bl_done(_l)            LDLM_SET_FLAG((_l), 1ULL << 47)