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staging: lustre: ldlm: update comments about ldlm l_flags

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Add and update documentation about some of the ldlm l_flags.

Signed-off-by: Bruce Korb <bruce.korb@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2906
Reviewed-by: Keith Mannthey <Keith.Mannthey@intel.com>
Reviewed-on: http://review.whamcloud.com/7963
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bruce Korb 2016-04-27 18:21:00 -04:00 • committed by Greg Kroah-Hartman
parent efceaf7cdb
commit b97fa87f80
1 changed files with 7 additions and 7 deletions
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14
drivers/staging/lustre/lustre/include/lustre_dlm_flags.h
View file

@ -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)