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staging/lustre/dlmlock: compress out unused space

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* lustre/include/lustre_dlm.h: Remove all bit fields and the unused
  weighing callback procedure.  respell LDLM_AST_DISCARD_DATA as
  LDLM_FL_AST_DISCARD_DATA to match other flags.
* .gitignore: ignore emacs temporary files
* autogen.sh: rebuild the lock bits, if autogen is available.
* contrib/bit-masks/lustre_dlm_flags.def: define the ldlm_lock flags
* contrib/bit-masks/lustre_dlm_flags.tpl: template for emitting text
* contrib/bit-masks/Makefile: construct the .c and .h files
  The .c file is for constructing a crash extension and is not
  preserved.
* contrib/bit-masks/.gitignore: ignore built products
* lustre/contrib/wireshark/packet-lustre.c: use built files instead
  of local versions of the defines.

In the rest of the modified sources, replace flag field references
with bit mask references.

* lustre/osc/osc_lock.c: removed osc_lock_weigh, too

Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2771
Lustre-change: http://review.whamcloud.com/5312
Signed-off-by: Bruce Korb <bruce_korb@xyratex.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Reviewed-by: Keith Mannthey <Keith.Mannthey@intel.com>
Reviewed-by: Keith Mannthey <keith.mannthey@intel.com>
Reviewed-by: <bruce.korb@gmail.com>
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bruce Korb 2013-07-23 00:06:37 +08:00 committed by Greg Kroah-Hartman
parent df9fcbeb77
commit f2145eae3d
13 changed files with 572 additions and 332 deletions
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198
drivers/staging/lustre/lustre/include/lustre_dlm.h
View file

@ -57,6 +57,8 @@
#include <interval_tree.h> /* for interval_node{}, ldlm_extent */
#include <lu_ref.h>
#include "lustre_dlm_flags.h"
struct obd_ops;
struct obd_device;
@ -95,161 +97,6 @@ typedef enum {
LDLM_NAMESPACE_CLIENT = 1 << 1
} ldlm_side_t;
/**
* Declaration of flags sent through the wire.
**/
#define LDLM_FL_LOCK_CHANGED 0x000001 /* extent, mode, or resource changed */
/**
* If the server returns one of these flags, then the lock was put on that list.
* If the client sends one of these flags (during recovery ONLY!), it wants the
* lock added to the specified list, no questions asked.
*/
#define LDLM_FL_BLOCK_GRANTED 0x000002
#define LDLM_FL_BLOCK_CONV 0x000004
#define LDLM_FL_BLOCK_WAIT 0x000008
/* Used to be LDLM_FL_CBPENDING 0x000010 moved to non-wire flags */
#define LDLM_FL_AST_SENT 0x000020 /* blocking or cancel packet was
* queued for sending. */
/* Used to be LDLM_FL_WAIT_NOREPROC 0x000040 moved to non-wire flags */
/* Used to be LDLM_FL_CANCEL 0x000080 moved to non-wire flags */
/**
* Lock is being replayed. This could probably be implied by the fact that one
* of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous.
*/
#define LDLM_FL_REPLAY 0x000100
#define LDLM_FL_INTENT_ONLY 0x000200 /* Don't grant lock, just do intent. */
/* Used to be LDLM_FL_LOCAL_ONLY 0x000400 moved to non-wire flags */
/* Used to be LDLM_FL_FAILED 0x000800 moved to non-wire flags */
#define LDLM_FL_HAS_INTENT 0x001000 /* lock request has intent */
/* Used to be LDLM_FL_CANCELING 0x002000 moved to non-wire flags */
/* Used to be LDLM_FL_LOCAL 0x004000 moved to non-wire flags */
#define LDLM_FL_DISCARD_DATA 0x010000 /* discard (no writeback) on cancel */
#define LDLM_FL_NO_TIMEOUT 0x020000 /* Blocked by group lock - wait
* indefinitely */
/** file & record locking */
#define LDLM_FL_BLOCK_NOWAIT 0x040000 /* Server told not to wait if blocked.
* For AGL, OST will not send glimpse
* callback. */
#define LDLM_FL_TEST_LOCK 0x080000 // return blocking lock
/* Used to be LDLM_FL_LVB_READY 0x100000 moved to non-wire flags */
/* Used to be LDLM_FL_KMS_IGNORE 0x200000 moved to non-wire flags */
/* Used to be LDLM_FL_NO_LRU 0x400000 moved to non-wire flags */
/* Immediatelly cancel such locks when they block some other locks. Send
* cancel notification to original lock holder, but expect no reply. This is
* for clients (like liblustre) that cannot be expected to reliably response
* to blocking AST. */
#define LDLM_FL_CANCEL_ON_BLOCK 0x800000
/* Flags flags inherited from parent lock when doing intents. */
#define LDLM_INHERIT_FLAGS (LDLM_FL_CANCEL_ON_BLOCK)
/* Used to be LDLM_FL_CP_REQD 0x1000000 moved to non-wire flags */
/* Used to be LDLM_FL_CLEANED 0x2000000 moved to non-wire flags */
/* Used to be LDLM_FL_ATOMIC_CB 0x4000000 moved to non-wire flags */
/* Used to be LDLM_FL_BL_AST 0x10000000 moved to non-wire flags */
/* Used to be LDLM_FL_BL_DONE 0x20000000 moved to non-wire flags */
/* measure lock contention and return -EUSERS if locking contention is high */
#define LDLM_FL_DENY_ON_CONTENTION 0x40000000
/* These are flags that are mapped into the flags and ASTs of blocking locks */
#define LDLM_AST_DISCARD_DATA 0x80000000 /* Add FL_DISCARD to blocking ASTs */
/* Flags sent in AST lock_flags to be mapped into the receiving lock. */
#define LDLM_AST_FLAGS (LDLM_FL_DISCARD_DATA)
/*
* --------------------------------------------------------------------------
* NOTE! Starting from this point, that is, LDLM_FL_* flags with values above
* 0x80000000 will not be sent over the wire.
* --------------------------------------------------------------------------
*/
/**
* Declaration of flags not sent through the wire.
**/
/**
* Used for marking lock as a target for -EINTR while cp_ast sleep
* emulation + race with upcoming bl_ast.
*/
#define LDLM_FL_FAIL_LOC 0x100000000ULL
/**
* Used while processing the unused list to know that we have already
* handled this lock and decided to skip it.
*/
#define LDLM_FL_SKIPPED 0x200000000ULL
/* this lock is being destroyed */
#define LDLM_FL_CBPENDING 0x400000000ULL
/* not a real flag, not saved in lock */
#define LDLM_FL_WAIT_NOREPROC 0x800000000ULL
/* cancellation callback already run */
#define LDLM_FL_CANCEL 0x1000000000ULL
#define LDLM_FL_LOCAL_ONLY 0x2000000000ULL
/* don't run the cancel callback under ldlm_cli_cancel_unused */
#define LDLM_FL_FAILED 0x4000000000ULL
/* lock cancel has already been sent */
#define LDLM_FL_CANCELING 0x8000000000ULL
/* local lock (ie, no srv/cli split) */
#define LDLM_FL_LOCAL 0x10000000000ULL
/* XXX FIXME: This is being added to b_size as a low-risk fix to the fact that
* the LVB filling happens _after_ the lock has been granted, so another thread
* can match it before the LVB has been updated. As a dirty hack, we set
* LDLM_FL_LVB_READY only after we've done the LVB poop.
* this is only needed on LOV/OSC now, where LVB is actually used and callers
* must set it in input flags.
*
* The proper fix is to do the granting inside of the completion AST, which can
* be replaced with a LVB-aware wrapping function for OSC locks. That change is
* pretty high-risk, though, and would need a lot more testing. */
#define LDLM_FL_LVB_READY 0x20000000000ULL
/* A lock contributes to the known minimum size (KMS) calculation until it has
* finished the part of its cancelation that performs write back on its dirty
* pages. It can remain on the granted list during this whole time. Threads
* racing to update the KMS after performing their writeback need to know to
* exclude each other's locks from the calculation as they walk the granted
* list. */
#define LDLM_FL_KMS_IGNORE 0x40000000000ULL
/* completion AST to be executed */
#define LDLM_FL_CP_REQD 0x80000000000ULL
/* cleanup_resource has already handled the lock */
#define LDLM_FL_CLEANED 0x100000000000ULL
/* optimization hint: LDLM can run blocking callback from current context
* w/o involving separate thread. in order to decrease cs rate */
#define LDLM_FL_ATOMIC_CB 0x200000000000ULL
/* It may happen that a client initiates two operations, e.g. unlink and
* mkdir, such that the server sends a blocking AST for conflicting
* locks to this client for the first operation, whereas the second
* operation 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 0x400000000000ULL
#define LDLM_FL_BL_DONE 0x800000000000ULL
/* Don't put lock into the LRU list, so that it is not canceled due to aging.
* Used by MGC locks, they are cancelled only at unmount or by callback. */
#define LDLM_FL_NO_LRU 0x1000000000000ULL
/**
* The blocking callback is overloaded to perform two functions. These flags
* indicate which operation should be performed.
@ -720,8 +567,6 @@ typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, __u64 flags,
void *data);
/** Type for glimpse callback function of a lock. */
typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data);
/** Type for weight callback function of a lock. */
typedef unsigned long (*ldlm_weigh_callback)(struct ldlm_lock *lock);
/** Work list for sending GL ASTs to multiple locks. */
struct ldlm_glimpse_work {
@ -890,9 +735,6 @@ struct ldlm_lock {
*/
ldlm_glimpse_callback l_glimpse_ast;
/** XXX apparently unused "weight" handler. To be removed? */
ldlm_weigh_callback l_weigh_ast;
/**
* Lock export.
* This is a pointer to actual client export for locks that were granted
@ -919,11 +761,11 @@ struct ldlm_lock {
ldlm_policy_data_t l_policy_data;
/**
* Lock state flags.
* Like whenever we receive any blocking requests for this lock, etc.
* Protected by lr_lock.
* Lock state flags. Protected by lr_lock.
* \see lustre_dlm_flags.h where the bits are defined.
*/
__u64 l_flags;
/**
* Lock r/w usage counters.
* Protected by lr_lock.
@ -952,34 +794,6 @@ struct ldlm_lock {
/** Originally requested extent for the extent lock. */
struct ldlm_extent l_req_extent;
unsigned int l_failed:1,
/**
* Set for locks that were removed from class hash table and will be
* destroyed when last reference to them is released. Set by
* ldlm_lock_destroy_internal().
*
* Protected by lock and resource locks.
*/
l_destroyed:1,
/*
* it's set in lock_res_and_lock() and unset in unlock_res_and_lock().
*
* NB: compared with check_res_locked(), checking this bit is cheaper.
* Also, spin_is_locked() is deprecated for kernel code; one reason is
* because it works only for SMP so user needs to add extra macros like
* LASSERT_SPIN_LOCKED for uniprocessor kernels.
*/
l_res_locked:1,
/*
* It's set once we call ldlm_add_waiting_lock_res_locked()
* to start the lock-timeout timer and it will never be reset.
*
* Protected by lock_res_and_lock().
*/
l_waited:1,
/** Flag whether this is a server namespace lock. */
l_ns_srv:1;
/*
* Client-side-only members.
*/
@ -1230,7 +1044,6 @@ struct ldlm_enqueue_info {
void *ei_cb_bl; /** blocking lock callback */
void *ei_cb_cp; /** lock completion callback */
void *ei_cb_gl; /** lock glimpse callback */
void *ei_cb_wg; /** lock weigh callback */
void *ei_cbdata; /** Data to be passed into callbacks. */
};
@ -1328,7 +1141,6 @@ struct ldlm_callback_suite {
ldlm_completion_callback lcs_completion;
ldlm_blocking_callback lcs_blocking;
ldlm_glimpse_callback lcs_glimpse;
ldlm_weigh_callback lcs_weigh;
};
/* ldlm_lockd.c */

460
drivers/staging/lustre/lustre/include/lustre_dlm_flags.h Normal file
View file

@ -0,0 +1,460 @@
/* -*- buffer-read-only: t -*- vi: set ro:
*
* DO NOT EDIT THIS FILE (lustre_dlm_flags.h)
*
* It has been AutoGen-ed
* From the definitions lustre_dlm_flags.def
* and the template file lustre_dlm_flags.tpl
*
* lustre is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* lustre is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file lustre_dlm_flags.h
* The flags and collections of flags (masks) for \see struct ldlm_lock.
* This file is derived from flag definitions in lustre_dlm_flags.def.
* The format is defined in the lustre_dlm_flags.tpl template file.
*
* \addtogroup LDLM Lustre Distributed Lock Manager
* @{
*
* \name flags
* The flags and collections of flags (masks) for \see struct ldlm_lock.
* @{
*/
#ifndef LDLM_ALL_FLAGS_MASK
/** l_flags bits marked as "all_flags" bits */
#define LDLM_FL_ALL_FLAGS_MASK 0x007FFFFFC08F132FULL
/** l_flags bits marked as "ast" bits */
#define LDLM_FL_AST_MASK 0x0000000080000000ULL
/** l_flags bits marked as "blocked" bits */
#define LDLM_FL_BLOCKED_MASK 0x000000000000000EULL
/** l_flags bits marked as "gone" bits */
#define LDLM_FL_GONE_MASK 0x0006004000000000ULL
/** l_flags bits marked as "hide_lock" bits */
#define LDLM_FL_HIDE_LOCK_MASK 0x0000206400000000ULL
/** l_flags bits marked as "inherit" bits */
#define LDLM_FL_INHERIT_MASK 0x0000000000800000ULL
/** l_flags bits marked as "local_only" bits */
#define LDLM_FL_LOCAL_ONLY_MASK 0x007FFFFF00000000ULL
/** l_flags bits marked as "on_wire" bits */
#define LDLM_FL_ON_WIRE_MASK 0x00000000C08F132FULL
/** extent, mode, or resource changed */
#define LDLM_FL_LOCK_CHANGED 0x0000000000000001ULL // bit 0
#define ldlm_is_lock_changed(_l) LDLM_TEST_FLAG(( _l), 1ULL << 0)
#define ldlm_set_lock_changed(_l) LDLM_SET_FLAG(( _l), 1ULL << 0)
#define ldlm_clear_lock_changed(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 0)
/**
* Server placed lock on granted list, or a recovering client wants the
* lock added to the granted list, no questions asked. */
#define LDLM_FL_BLOCK_GRANTED 0x0000000000000002ULL // bit 1
#define ldlm_is_block_granted(_l) LDLM_TEST_FLAG(( _l), 1ULL << 1)
#define ldlm_set_block_granted(_l) LDLM_SET_FLAG(( _l), 1ULL << 1)
#define ldlm_clear_block_granted(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 1)
/**
* Server placed lock on conv list, or a recovering client wants the lock
* added to the conv list, no questions asked. */
#define LDLM_FL_BLOCK_CONV 0x0000000000000004ULL // bit 2
#define ldlm_is_block_conv(_l) LDLM_TEST_FLAG(( _l), 1ULL << 2)
#define ldlm_set_block_conv(_l) LDLM_SET_FLAG(( _l), 1ULL << 2)
#define ldlm_clear_block_conv(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 2)
/**
* Server placed lock on wait list, or a recovering client wants the lock
* added to the wait list, no questions asked. */
#define LDLM_FL_BLOCK_WAIT 0x0000000000000008ULL // bit 3
#define ldlm_is_block_wait(_l) LDLM_TEST_FLAG(( _l), 1ULL << 3)
#define ldlm_set_block_wait(_l) LDLM_SET_FLAG(( _l), 1ULL << 3)
#define ldlm_clear_block_wait(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 3)
/** blocking or cancel packet was queued for sending. */
#define LDLM_FL_AST_SENT 0x0000000000000020ULL // bit 5
#define ldlm_is_ast_sent(_l) LDLM_TEST_FLAG(( _l), 1ULL << 5)
#define ldlm_set_ast_sent(_l) LDLM_SET_FLAG(( _l), 1ULL << 5)
#define ldlm_clear_ast_sent(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 5)
/**
* Lock is being replayed. This could probably be implied by the fact that
* one of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous. */
#define LDLM_FL_REPLAY 0x0000000000000100ULL // bit 8
#define ldlm_is_replay(_l) LDLM_TEST_FLAG(( _l), 1ULL << 8)
#define ldlm_set_replay(_l) LDLM_SET_FLAG(( _l), 1ULL << 8)
#define ldlm_clear_replay(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 8)
/** Don't grant lock, just do intent. */
#define LDLM_FL_INTENT_ONLY 0x0000000000000200ULL // bit 9
#define ldlm_is_intent_only(_l) LDLM_TEST_FLAG(( _l), 1ULL << 9)
#define ldlm_set_intent_only(_l) LDLM_SET_FLAG(( _l), 1ULL << 9)
#define ldlm_clear_intent_only(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 9)
/** lock request has intent */
#define LDLM_FL_HAS_INTENT 0x0000000000001000ULL // bit 12
#define ldlm_is_has_intent(_l) LDLM_TEST_FLAG(( _l), 1ULL << 12)
#define ldlm_set_has_intent(_l) LDLM_SET_FLAG(( _l), 1ULL << 12)
#define ldlm_clear_has_intent(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 12)
/** discard (no writeback) on cancel */
#define LDLM_FL_DISCARD_DATA 0x0000000000010000ULL // bit 16
#define ldlm_is_discard_data(_l) LDLM_TEST_FLAG(( _l), 1ULL << 16)
#define ldlm_set_discard_data(_l) LDLM_SET_FLAG(( _l), 1ULL << 16)
#define ldlm_clear_discard_data(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 16)
/** Blocked by group lock - wait indefinitely */
#define LDLM_FL_NO_TIMEOUT 0x0000000000020000ULL // bit 17
#define ldlm_is_no_timeout(_l) LDLM_TEST_FLAG(( _l), 1ULL << 17)
#define ldlm_set_no_timeout(_l) LDLM_SET_FLAG(( _l), 1ULL << 17)
#define ldlm_clear_no_timeout(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 17)
/**
* Server told not to wait if blocked. For AGL, OST will not send glimpse
* callback. */
#define LDLM_FL_BLOCK_NOWAIT 0x0000000000040000ULL // bit 18
#define ldlm_is_block_nowait(_l) LDLM_TEST_FLAG(( _l), 1ULL << 18)
#define ldlm_set_block_nowait(_l) LDLM_SET_FLAG(( _l), 1ULL << 18)
#define ldlm_clear_block_nowait(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 18)
/** return blocking lock */
#define LDLM_FL_TEST_LOCK 0x0000000000080000ULL // bit 19
#define ldlm_is_test_lock(_l) LDLM_TEST_FLAG(( _l), 1ULL << 19)
#define ldlm_set_test_lock(_l) LDLM_SET_FLAG(( _l), 1ULL << 19)
#define ldlm_clear_test_lock(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 19)
/**
* Immediatelly cancel such locks when they block some other locks. Send
* cancel notification to original lock holder, but expect no reply. This
* is for clients (like liblustre) that cannot be expected to reliably
* response to blocking AST. */
#define LDLM_FL_CANCEL_ON_BLOCK 0x0000000000800000ULL // bit 23
#define ldlm_is_cancel_on_block(_l) LDLM_TEST_FLAG(( _l), 1ULL << 23)
#define ldlm_set_cancel_on_block(_l) LDLM_SET_FLAG(( _l), 1ULL << 23)
#define ldlm_clear_cancel_on_block(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 23)
/**
* measure lock contention and return -EUSERS if locking contention is high */
#define LDLM_FL_DENY_ON_CONTENTION 0x0000000040000000ULL // bit 30
#define ldlm_is_deny_on_contention(_l) LDLM_TEST_FLAG(( _l), 1ULL << 30)
#define ldlm_set_deny_on_contention(_l) LDLM_SET_FLAG(( _l), 1ULL << 30)
#define ldlm_clear_deny_on_contention(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 30)
/**
* These are flags that are mapped into the flags and ASTs of blocking
* locks Add FL_DISCARD to blocking ASTs */
#define LDLM_FL_AST_DISCARD_DATA 0x0000000080000000ULL // bit 31
#define ldlm_is_ast_discard_data(_l) LDLM_TEST_FLAG(( _l), 1ULL << 31)
#define ldlm_set_ast_discard_data(_l) LDLM_SET_FLAG(( _l), 1ULL << 31)
#define ldlm_clear_ast_discard_data(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 31)
/**
* Used for marking lock as a target for -EINTR while cp_ast sleep emulation
* + race with upcoming bl_ast. */
#define LDLM_FL_FAIL_LOC 0x0000000100000000ULL // bit 32
#define ldlm_is_fail_loc(_l) LDLM_TEST_FLAG(( _l), 1ULL << 32)
#define ldlm_set_fail_loc(_l) LDLM_SET_FLAG(( _l), 1ULL << 32)
#define ldlm_clear_fail_loc(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 32)
/**
* Used while processing the unused list to know that we have already
* handled this lock and decided to skip it. */
#define LDLM_FL_SKIPPED 0x0000000200000000ULL // bit 33
#define ldlm_is_skipped(_l) LDLM_TEST_FLAG(( _l), 1ULL << 33)
#define ldlm_set_skipped(_l) LDLM_SET_FLAG(( _l), 1ULL << 33)
#define ldlm_clear_skipped(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 33)
/** this lock is being destroyed */
#define LDLM_FL_CBPENDING 0x0000000400000000ULL // bit 34
#define ldlm_is_cbpending(_l) LDLM_TEST_FLAG(( _l), 1ULL << 34)
#define ldlm_set_cbpending(_l) LDLM_SET_FLAG(( _l), 1ULL << 34)
#define ldlm_clear_cbpending(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 34)
/** not a real flag, not saved in lock */
#define LDLM_FL_WAIT_NOREPROC 0x0000000800000000ULL // bit 35
#define ldlm_is_wait_noreproc(_l) LDLM_TEST_FLAG(( _l), 1ULL << 35)
#define ldlm_set_wait_noreproc(_l) LDLM_SET_FLAG(( _l), 1ULL << 35)
#define ldlm_clear_wait_noreproc(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 35)
/** cancellation callback already run */
#define LDLM_FL_CANCEL 0x0000001000000000ULL // bit 36
#define ldlm_is_cancel(_l) LDLM_TEST_FLAG(( _l), 1ULL << 36)
#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 */
#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)
#define ldlm_clear_local_only(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 37)
/** don't run the cancel callback under ldlm_cli_cancel_unused */
#define LDLM_FL_FAILED 0x0000004000000000ULL // bit 38
#define ldlm_is_failed(_l) LDLM_TEST_FLAG(( _l), 1ULL << 38)
#define ldlm_set_failed(_l) LDLM_SET_FLAG(( _l), 1ULL << 38)
#define ldlm_clear_failed(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 38)
/** lock cancel has already been sent */
#define LDLM_FL_CANCELING 0x0000008000000000ULL // bit 39
#define ldlm_is_canceling(_l) LDLM_TEST_FLAG(( _l), 1ULL << 39)
#define ldlm_set_canceling(_l) LDLM_SET_FLAG(( _l), 1ULL << 39)
#define ldlm_clear_canceling(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 39)
/** local lock (ie, no srv/cli split) */
#define LDLM_FL_LOCAL 0x0000010000000000ULL // bit 40
#define ldlm_is_local(_l) LDLM_TEST_FLAG(( _l), 1ULL << 40)
#define ldlm_set_local(_l) LDLM_SET_FLAG(( _l), 1ULL << 40)
#define ldlm_clear_local(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 40)
/**
* XXX FIXME: This is being added to b_size as a low-risk fix to the
* fact that the LVB filling happens _after_ the lock has been granted,
* so another thread can match it before the LVB has been updated. As a
* dirty hack, we set LDLM_FL_LVB_READY only after we've done the LVB poop.
* this is only needed on LOV/OSC now, where LVB is actually used and
* callers must set it in input flags.
*
* The proper fix is to do the granting inside of the completion AST,
* which can be replaced with a LVB-aware wrapping function for OSC locks.
* That change is pretty high-risk, though, and would need a lot more
* testing. */
#define LDLM_FL_LVB_READY 0x0000020000000000ULL // bit 41
#define ldlm_is_lvb_ready(_l) LDLM_TEST_FLAG(( _l), 1ULL << 41)
#define ldlm_set_lvb_ready(_l) LDLM_SET_FLAG(( _l), 1ULL << 41)
#define ldlm_clear_lvb_ready(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 41)
/**
* A lock contributes to the known minimum size (KMS) calculation until it
* has finished the part of its cancelation that performs write back on its
* dirty pages. It can remain on the granted list during this whole time.
* Threads racing to update the KMS after performing their writeback need
* to know to exclude each other's locks from the calculation as they walk
* the granted list. */
#define LDLM_FL_KMS_IGNORE 0x0000040000000000ULL // bit 42
#define ldlm_is_kms_ignore(_l) LDLM_TEST_FLAG(( _l), 1ULL << 42)
#define ldlm_set_kms_ignore(_l) LDLM_SET_FLAG(( _l), 1ULL << 42)
#define ldlm_clear_kms_ignore(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 42)
/** completion AST to be executed */
#define LDLM_FL_CP_REQD 0x0000080000000000ULL // bit 43
#define ldlm_is_cp_reqd(_l) LDLM_TEST_FLAG(( _l), 1ULL << 43)
#define ldlm_set_cp_reqd(_l) LDLM_SET_FLAG(( _l), 1ULL << 43)
#define ldlm_clear_cp_reqd(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 43)
/** cleanup_resource has already handled the lock */
#define LDLM_FL_CLEANED 0x0000100000000000ULL // bit 44
#define ldlm_is_cleaned(_l) LDLM_TEST_FLAG(( _l), 1ULL << 44)
#define ldlm_set_cleaned(_l) LDLM_SET_FLAG(( _l), 1ULL << 44)
#define ldlm_clear_cleaned(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 44)
/**
* optimization hint: LDLM can run blocking callback from current context
* w/o involving separate thread. in order to decrease cs rate */
#define LDLM_FL_ATOMIC_CB 0x0000200000000000ULL // bit 45
#define ldlm_is_atomic_cb(_l) LDLM_TEST_FLAG(( _l), 1ULL << 45)
#define ldlm_set_atomic_cb(_l) LDLM_SET_FLAG(( _l), 1ULL << 45)
#define ldlm_clear_atomic_cb(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 45)
/**
* It may happen that a client initiates two operations, e.g. unlink and
* mkdir, such that the server sends a blocking AST for conflicting locks
* to this client for the first operation, whereas the second operation
* 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 */
#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)
#define ldlm_clear_bl_done(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 47)
/**
* Don't put lock into the LRU list, so that it is not canceled due
* to aging. Used by MGC locks, they are cancelled only at unmount or
* by callback. */
#define LDLM_FL_NO_LRU 0x0001000000000000ULL // bit 48
#define ldlm_is_no_lru(_l) LDLM_TEST_FLAG(( _l), 1ULL << 48)
#define ldlm_set_no_lru(_l) LDLM_SET_FLAG(( _l), 1ULL << 48)
#define ldlm_clear_no_lru(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 48)
/**
* Set for locks that failed and where the server has been notified.
*
* Protected by lock and resource locks. */
#define LDLM_FL_FAIL_NOTIFIED 0x0002000000000000ULL // bit 49
#define ldlm_is_fail_notified(_l) LDLM_TEST_FLAG(( _l), 1ULL << 49)
#define ldlm_set_fail_notified(_l) LDLM_SET_FLAG(( _l), 1ULL << 49)
#define ldlm_clear_fail_notified(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 49)
/**
* Set for locks that were removed from class hash table and will
* be destroyed when last reference to them is released. Set by
* ldlm_lock_destroy_internal().
*
* Protected by lock and resource locks. */
#define LDLM_FL_DESTROYED 0x0004000000000000ULL // bit 50
#define ldlm_is_destroyed(_l) LDLM_TEST_FLAG(( _l), 1ULL << 50)
#define ldlm_set_destroyed(_l) LDLM_SET_FLAG(( _l), 1ULL << 50)
#define ldlm_clear_destroyed(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 50)
/** flag whether this is a server namespace lock */
#define LDLM_FL_SERVER_LOCK 0x0008000000000000ULL // bit 51
#define ldlm_is_server_lock(_l) LDLM_TEST_FLAG(( _l), 1ULL << 51)
#define ldlm_set_server_lock(_l) LDLM_SET_FLAG(( _l), 1ULL << 51)
#define ldlm_clear_server_lock(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 51)
/**
* It's set in lock_res_and_lock() and unset in unlock_res_and_lock().
*
* NB: compared with check_res_locked(), checking this bit is cheaper.
* Also, spin_is_locked() is deprecated for kernel code; one reason is
* because it works only for SMP so user needs to add extra macros like
* LASSERT_SPIN_LOCKED for uniprocessor kernels. */
#define LDLM_FL_RES_LOCKED 0x0010000000000000ULL // bit 52
#define ldlm_is_res_locked(_l) LDLM_TEST_FLAG(( _l), 1ULL << 52)
#define ldlm_set_res_locked(_l) LDLM_SET_FLAG(( _l), 1ULL << 52)
#define ldlm_clear_res_locked(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 52)
/**
* It's set once we call ldlm_add_waiting_lock_res_locked() to start the
* lock-timeout timer and it will never be reset.
*
* Protected by lock and resource locks. */
#define LDLM_FL_WAITED 0x0020000000000000ULL // bit 53
#define ldlm_is_waited(_l) LDLM_TEST_FLAG(( _l), 1ULL << 53)
#define ldlm_set_waited(_l) LDLM_SET_FLAG(( _l), 1ULL << 53)
#define ldlm_clear_waited(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 53)
/** Flag whether this is a server namespace lock. */
#define LDLM_FL_NS_SRV 0x0040000000000000ULL // bit 54
#define ldlm_is_ns_srv(_l) LDLM_TEST_FLAG(( _l), 1ULL << 54)
#define ldlm_set_ns_srv(_l) LDLM_SET_FLAG(( _l), 1ULL << 54)
#define ldlm_clear_ns_srv(_l) LDLM_CLEAR_FLAG((_l), 1ULL << 54)
/** test for ldlm_lock flag bit set */
#define LDLM_TEST_FLAG(_l, _b) (((_l)->l_flags & (_b)) != 0)
/** set a ldlm_lock flag bit */
#define LDLM_SET_FLAG(_l, _b) (((_l)->l_flags |= (_b))
/** clear a ldlm_lock flag bit */
#define LDLM_CLEAR_FLAG(_l, _b) (((_l)->l_flags &= ~(_b))
/** Mask of flags inherited from parent lock when doing intents. */
#define LDLM_INHERIT_FLAGS LDLM_FL_INHERIT_MASK
/** Mask of Flags sent in AST lock_flags to map into the receiving lock. */
#define LDLM_AST_FLAGS LDLM_FL_AST_MASK
/** @} subgroup */
/** @} group */
#ifdef WIRESHARK_COMPILE
static int hf_lustre_ldlm_fl_lock_changed = -1;
static int hf_lustre_ldlm_fl_block_granted = -1;
static int hf_lustre_ldlm_fl_block_conv = -1;
static int hf_lustre_ldlm_fl_block_wait = -1;
static int hf_lustre_ldlm_fl_ast_sent = -1;
static int hf_lustre_ldlm_fl_replay = -1;
static int hf_lustre_ldlm_fl_intent_only = -1;
static int hf_lustre_ldlm_fl_has_intent = -1;
static int hf_lustre_ldlm_fl_discard_data = -1;
static int hf_lustre_ldlm_fl_no_timeout = -1;
static int hf_lustre_ldlm_fl_block_nowait = -1;
static int hf_lustre_ldlm_fl_test_lock = -1;
static int hf_lustre_ldlm_fl_cancel_on_block = -1;
static int hf_lustre_ldlm_fl_deny_on_contention = -1;
static int hf_lustre_ldlm_fl_ast_discard_data = -1;
static int hf_lustre_ldlm_fl_fail_loc = -1;
static int hf_lustre_ldlm_fl_skipped = -1;
static int hf_lustre_ldlm_fl_cbpending = -1;
static int hf_lustre_ldlm_fl_wait_noreproc = -1;
static int hf_lustre_ldlm_fl_cancel = -1;
static int hf_lustre_ldlm_fl_local_only = -1;
static int hf_lustre_ldlm_fl_failed = -1;
static int hf_lustre_ldlm_fl_canceling = -1;
static int hf_lustre_ldlm_fl_local = -1;
static int hf_lustre_ldlm_fl_lvb_ready = -1;
static int hf_lustre_ldlm_fl_kms_ignore = -1;
static int hf_lustre_ldlm_fl_cp_reqd = -1;
static int hf_lustre_ldlm_fl_cleaned = -1;
static int hf_lustre_ldlm_fl_atomic_cb = -1;
static int hf_lustre_ldlm_fl_bl_ast = -1;
static int hf_lustre_ldlm_fl_bl_done = -1;
static int hf_lustre_ldlm_fl_no_lru = -1;
static int hf_lustre_ldlm_fl_fail_notified = -1;
static int hf_lustre_ldlm_fl_destroyed = -1;
static int hf_lustre_ldlm_fl_server_lock = -1;
static int hf_lustre_ldlm_fl_res_locked = -1;
static int hf_lustre_ldlm_fl_waited = -1;
static int hf_lustre_ldlm_fl_ns_srv = -1;
const value_string lustre_ldlm_flags_vals[] = {
{LDLM_FL_LOCK_CHANGED, "LDLM_FL_LOCK_CHANGED"},
{LDLM_FL_BLOCK_GRANTED, "LDLM_FL_BLOCK_GRANTED"},
{LDLM_FL_BLOCK_CONV, "LDLM_FL_BLOCK_CONV"},
{LDLM_FL_BLOCK_WAIT, "LDLM_FL_BLOCK_WAIT"},
{LDLM_FL_AST_SENT, "LDLM_FL_AST_SENT"},
{LDLM_FL_REPLAY, "LDLM_FL_REPLAY"},
{LDLM_FL_INTENT_ONLY, "LDLM_FL_INTENT_ONLY"},
{LDLM_FL_HAS_INTENT, "LDLM_FL_HAS_INTENT"},
{LDLM_FL_DISCARD_DATA, "LDLM_FL_DISCARD_DATA"},
{LDLM_FL_NO_TIMEOUT, "LDLM_FL_NO_TIMEOUT"},
{LDLM_FL_BLOCK_NOWAIT, "LDLM_FL_BLOCK_NOWAIT"},
{LDLM_FL_TEST_LOCK, "LDLM_FL_TEST_LOCK"},
{LDLM_FL_CANCEL_ON_BLOCK, "LDLM_FL_CANCEL_ON_BLOCK"},
{LDLM_FL_DENY_ON_CONTENTION, "LDLM_FL_DENY_ON_CONTENTION"},
{LDLM_FL_AST_DISCARD_DATA, "LDLM_FL_AST_DISCARD_DATA"},
{LDLM_FL_FAIL_LOC, "LDLM_FL_FAIL_LOC"},
{LDLM_FL_SKIPPED, "LDLM_FL_SKIPPED"},
{LDLM_FL_CBPENDING, "LDLM_FL_CBPENDING"},
{LDLM_FL_WAIT_NOREPROC, "LDLM_FL_WAIT_NOREPROC"},
{LDLM_FL_CANCEL, "LDLM_FL_CANCEL"},
{LDLM_FL_LOCAL_ONLY, "LDLM_FL_LOCAL_ONLY"},
{LDLM_FL_FAILED, "LDLM_FL_FAILED"},
{LDLM_FL_CANCELING, "LDLM_FL_CANCELING"},
{LDLM_FL_LOCAL, "LDLM_FL_LOCAL"},
{LDLM_FL_LVB_READY, "LDLM_FL_LVB_READY"},
{LDLM_FL_KMS_IGNORE, "LDLM_FL_KMS_IGNORE"},
{LDLM_FL_CP_REQD, "LDLM_FL_CP_REQD"},
{LDLM_FL_CLEANED, "LDLM_FL_CLEANED"},
{LDLM_FL_ATOMIC_CB, "LDLM_FL_ATOMIC_CB"},
{LDLM_FL_BL_AST, "LDLM_FL_BL_AST"},
{LDLM_FL_BL_DONE, "LDLM_FL_BL_DONE"},
{LDLM_FL_NO_LRU, "LDLM_FL_NO_LRU"},
{LDLM_FL_FAIL_NOTIFIED, "LDLM_FL_FAIL_NOTIFIED"},
{LDLM_FL_DESTROYED, "LDLM_FL_DESTROYED"},
{LDLM_FL_SERVER_LOCK, "LDLM_FL_SERVER_LOCK"},
{LDLM_FL_RES_LOCKED, "LDLM_FL_RES_LOCKED"},
{LDLM_FL_WAITED, "LDLM_FL_WAITED"},
{LDLM_FL_NS_SRV, "LDLM_FL_NS_SRV"},
{ 0, NULL }
};
#endif /* WIRESHARK_COMPILE */
#endif /* LDLM_ALL_FLAGS_MASK */

8
drivers/staging/lustre/lustre/ldlm/l_lock.c
View file

@ -51,12 +51,12 @@
struct ldlm_resource *lock_res_and_lock(struct ldlm_lock *lock)
{
/* on server-side resource of lock doesn't change */
if (!lock->l_ns_srv)
if ((lock->l_flags & LDLM_FL_NS_SRV) == 0)
spin_lock(&lock->l_lock);
lock_res(lock->l_resource);
lock->l_res_locked = 1;
lock->l_flags |= LDLM_FL_RES_LOCKED;
return lock->l_resource;
}
EXPORT_SYMBOL(lock_res_and_lock);
@ -67,10 +67,10 @@ EXPORT_SYMBOL(lock_res_and_lock);
void unlock_res_and_lock(struct ldlm_lock *lock)
{
/* on server-side resource of lock doesn't change */
lock->l_res_locked = 0;
lock->l_flags &= ~LDLM_FL_RES_LOCKED;
unlock_res(lock->l_resource);
if (!lock->l_ns_srv)
if ((lock->l_flags & LDLM_FL_NS_SRV) == 0)
spin_unlock(&lock->l_lock);
}
EXPORT_SYMBOL(unlock_res_and_lock);

2
drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
View file

@ -639,7 +639,7 @@ ldlm_flock_completion_ast(struct ldlm_lock *lock, __u64 flags, void *data)
granted:
OBD_FAIL_TIMEOUT(OBD_FAIL_LDLM_CP_CB_WAIT, 10);
if (lock->l_destroyed) {
if (lock->l_flags & LDLM_FL_DESTROYED) {
LDLM_DEBUG(lock, "client-side enqueue waking up: destroyed");
RETURN(0);
}

48
drivers/staging/lustre/lustre/ldlm/ldlm_lock.c
View file

@ -199,7 +199,7 @@ void ldlm_lock_put(struct ldlm_lock *lock)
"final lock_put on destroyed lock, freeing it.");
res = lock->l_resource;
LASSERT(lock->l_destroyed);
LASSERT(lock->l_flags & LDLM_FL_DESTROYED);
LASSERT(list_empty(&lock->l_res_link));
LASSERT(list_empty(&lock->l_pending_chain));
@ -254,7 +254,7 @@ int ldlm_lock_remove_from_lru(struct ldlm_lock *lock)
int rc;
ENTRY;
if (lock->l_ns_srv) {
if (lock->l_flags & LDLM_FL_NS_SRV) {
LASSERT(list_empty(&lock->l_lru));
RETURN(0);
}
@ -305,7 +305,7 @@ void ldlm_lock_touch_in_lru(struct ldlm_lock *lock)
struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
ENTRY;
if (lock->l_ns_srv) {
if (lock->l_flags & LDLM_FL_NS_SRV) {
LASSERT(list_empty(&lock->l_lru));
EXIT;
return;
@ -353,12 +353,12 @@ int ldlm_lock_destroy_internal(struct ldlm_lock *lock)
LBUG();
}
if (lock->l_destroyed) {
if (lock->l_flags & LDLM_FL_DESTROYED) {
LASSERT(list_empty(&lock->l_lru));
EXIT;
return 0;
}
lock->l_destroyed = 1;
lock->l_flags |= LDLM_FL_DESTROYED;
if (lock->l_export && lock->l_export->exp_lock_hash) {
/* NB: it's safe to call cfs_hash_del() even lock isn't
@ -596,7 +596,7 @@ struct ldlm_lock *__ldlm_handle2lock(const struct lustre_handle *handle,
/* It's unlikely but possible that someone marked the lock as
* destroyed after we did handle2object on it */
if (flags == 0 && !lock->l_destroyed) {
if (flags == 0 && ((lock->l_flags & LDLM_FL_DESTROYED)== 0)) {
lu_ref_add(&lock->l_reference, "handle", current);
RETURN(lock);
}
@ -606,7 +606,7 @@ struct ldlm_lock *__ldlm_handle2lock(const struct lustre_handle *handle,
LASSERT(lock->l_resource != NULL);
lu_ref_add_atomic(&lock->l_reference, "handle", current);
if (unlikely(lock->l_destroyed)) {
if (unlikely(lock->l_flags & LDLM_FL_DESTROYED)) {
unlock_res_and_lock(lock);
CDEBUG(D_INFO, "lock already destroyed: lock %p\n", lock);
LDLM_LOCK_PUT(lock);
@ -695,7 +695,7 @@ void ldlm_add_bl_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
lock->l_flags |= LDLM_FL_AST_SENT;
/* If the enqueuing client said so, tell the AST recipient to
* discard dirty data, rather than writing back. */
if (new->l_flags & LDLM_AST_DISCARD_DATA)
if (new->l_flags & LDLM_FL_AST_DISCARD_DATA)
lock->l_flags |= LDLM_FL_DISCARD_DATA;
LASSERT(list_empty(&lock->l_bl_ast));
list_add(&lock->l_bl_ast, work_list);
@ -873,7 +873,7 @@ void ldlm_lock_decref_internal(struct ldlm_lock *lock, __u32 mode)
(lock->l_flags & LDLM_FL_CBPENDING)) {
/* If we received a blocked AST and this was the last reference,
* run the callback. */
if (lock->l_ns_srv && lock->l_export)
if ((lock->l_flags & LDLM_FL_NS_SRV) && lock->l_export)
CERROR("FL_CBPENDING set on non-local lock--just a "
"warning\n");
@ -1069,7 +1069,7 @@ static void ldlm_granted_list_add_lock(struct ldlm_lock *lock,
ldlm_resource_dump(D_INFO, res);
LDLM_DEBUG(lock, "About to add lock:");
if (lock->l_destroyed) {
if (lock->l_flags & LDLM_FL_DESTROYED) {
CDEBUG(D_OTHER, "Lock destroyed, not adding to resource\n");
return;
}
@ -1203,9 +1203,7 @@ static struct ldlm_lock *search_queue(struct list_head *queue,
policy->l_inodebits.bits))
continue;
if (!unref &&
(lock->l_destroyed || lock->l_flags & LDLM_FL_FAILED ||
lock->l_failed))
if (!unref && (lock->l_flags & LDLM_FL_GONE_MASK))
continue;
if ((flags & LDLM_FL_LOCAL_ONLY) &&
@ -1227,8 +1225,8 @@ static struct ldlm_lock *search_queue(struct list_head *queue,
void ldlm_lock_fail_match_locked(struct ldlm_lock *lock)
{
if (!lock->l_failed) {
lock->l_failed = 1;
if ((lock->l_flags & LDLM_FL_FAIL_NOTIFIED) == 0) {
lock->l_flags |= LDLM_FL_FAIL_NOTIFIED;
wake_up_all(&lock->l_waitq);
}
}
@ -1352,6 +1350,8 @@ ldlm_mode_t ldlm_lock_match(struct ldlm_namespace *ns, __u64 flags,
ldlm_lock2handle(lock, lockh);
if ((flags & LDLM_FL_LVB_READY) &&
(!(lock->l_flags & LDLM_FL_LVB_READY))) {
__u64 wait_flags = LDLM_FL_LVB_READY |
LDLM_FL_DESTROYED | LDLM_FL_FAIL_NOTIFIED;
struct l_wait_info lwi;
if (lock->l_completion_ast) {
int err = lock->l_completion_ast(lock,
@ -1373,8 +1373,7 @@ ldlm_mode_t ldlm_lock_match(struct ldlm_namespace *ns, __u64 flags,
/* XXX FIXME see comment on CAN_MATCH in lustre_dlm.h */
l_wait_event(lock->l_waitq,
lock->l_flags & LDLM_FL_LVB_READY ||
lock->l_destroyed || lock->l_failed,
lock->l_flags & wait_flags,
&lwi);
if (!(lock->l_flags & LDLM_FL_LVB_READY)) {
if (flags & LDLM_FL_TEST_LOCK)
@ -1431,8 +1430,7 @@ ldlm_mode_t ldlm_revalidate_lock_handle(struct lustre_handle *lockh,
lock = ldlm_handle2lock(lockh);
if (lock != NULL) {
lock_res_and_lock(lock);
if (lock->l_destroyed || lock->l_flags & LDLM_FL_FAILED ||
lock->l_failed)
if (lock->l_flags & LDLM_FL_GONE_MASK)
GOTO(out, mode);
if (lock->l_flags & LDLM_FL_CBPENDING &&
@ -1583,12 +1581,12 @@ struct ldlm_lock *ldlm_lock_create(struct ldlm_namespace *ns,
lock->l_req_mode = mode;
lock->l_ast_data = data;
lock->l_pid = current_pid();
lock->l_ns_srv = !!ns_is_server(ns);
if (ns_is_server(ns))
lock->l_flags |= LDLM_FL_NS_SRV;
if (cbs) {
lock->l_blocking_ast = cbs->lcs_blocking;
lock->l_completion_ast = cbs->lcs_completion;
lock->l_glimpse_ast = cbs->lcs_glimpse;
lock->l_weigh_ast = cbs->lcs_weigh;
}
lock->l_tree_node = NULL;
@ -1693,7 +1691,7 @@ ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *ns,
/* Some flags from the enqueue want to make it into the AST, via the
* lock's l_flags. */
lock->l_flags |= *flags & LDLM_AST_DISCARD_DATA;
lock->l_flags |= *flags & LDLM_FL_AST_DISCARD_DATA;
/* This distinction between local lock trees is very important; a client
* namespace only has information about locks taken by that client, and
@ -2046,15 +2044,15 @@ void ldlm_lock_cancel(struct ldlm_lock *lock)
LBUG();
}
if (lock->l_waited)
if (lock->l_flags & LDLM_FL_WAITED)
ldlm_del_waiting_lock(lock);
/* Releases cancel callback. */
ldlm_cancel_callback(lock);
/* Yes, second time, just in case it was added again while we were
running with no res lock in ldlm_cancel_callback */
if (lock->l_waited)
* running with no res lock in ldlm_cancel_callback */
if (lock->l_flags & LDLM_FL_WAITED)
ldlm_del_waiting_lock(lock);
ldlm_resource_unlink_lock(lock);

4
drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c
View file

@ -198,7 +198,7 @@ static void ldlm_handle_cp_callback(struct ptlrpc_request *req,
schedule_timeout_and_set_state(
TASK_INTERRUPTIBLE, to);
if (lock->l_granted_mode == lock->l_req_mode ||
lock->l_destroyed)
lock->l_flags & LDLM_FL_DESTROYED)
break;
}
}
@ -238,7 +238,7 @@ static void ldlm_handle_cp_callback(struct ptlrpc_request *req,
}
lock_res_and_lock(lock);
if (lock->l_destroyed ||
if ((lock->l_flags & LDLM_FL_DESTROYED) ||
lock->l_granted_mode == lock->l_req_mode) {
/* bug 11300: the lock has already been granted */
unlock_res_and_lock(lock);

7
drivers/staging/lustre/lustre/ldlm/ldlm_request.c
View file

@ -160,7 +160,7 @@ static int ldlm_completion_tail(struct ldlm_lock *lock)
long delay;
int result;
if (lock->l_destroyed || lock->l_flags & LDLM_FL_FAILED) {
if (lock->l_flags & (LDLM_FL_DESTROYED | LDLM_FL_FAILED)) {
LDLM_DEBUG(lock, "client-side enqueue: destroyed");
result = -EIO;
} else {
@ -888,9 +888,8 @@ int ldlm_cli_enqueue(struct obd_export *exp, struct ptlrpc_request **reqp,
} else {
const struct ldlm_callback_suite cbs = {
.lcs_completion = einfo->ei_cb_cp,
.lcs_blocking = einfo->ei_cb_bl,
.lcs_glimpse = einfo->ei_cb_gl,
.lcs_weigh = einfo->ei_cb_wg
.lcs_blocking = einfo->ei_cb_bl,
.lcs_glimpse = einfo->ei_cb_gl
};
lock = ldlm_lock_create(ns, res_id, einfo->ei_type,
einfo->ei_mode, &cbs, einfo->ei_cbdata,

4
drivers/staging/lustre/lustre/ldlm/ldlm_resource.c
View file

@ -1283,7 +1283,7 @@ void ldlm_resource_add_lock(struct ldlm_resource *res, struct list_head *head,
LDLM_DEBUG(lock, "About to add this lock:\n");
if (lock->l_destroyed) {
if (lock->l_flags & LDLM_FL_DESTROYED) {
CDEBUG(D_OTHER, "Lock destroyed, not adding to resource\n");
return;
}
@ -1308,7 +1308,7 @@ void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
ldlm_resource_dump(D_INFO, res);
LDLM_DEBUG(new, "About to insert this lock after %p:\n", original);
if (new->l_destroyed) {
if (new->l_flags & LDLM_FL_DESTROYED) {
CDEBUG(D_OTHER, "Lock destroyed, not adding to resource\n");
goto out;
}

15
drivers/staging/lustre/lustre/llite/dir.c
View file

@ -356,15 +356,12 @@ struct page *ll_get_dir_page(struct inode *dir, __u64 hash,
rc = md_lock_match(ll_i2sbi(dir)->ll_md_exp, LDLM_FL_BLOCK_GRANTED,
ll_inode2fid(dir), LDLM_IBITS, &policy, mode, &lockh);
if (!rc) {
struct ldlm_enqueue_info einfo = {.ei_type = LDLM_IBITS,
.ei_mode = mode,
.ei_cb_bl =
ll_md_blocking_ast,
.ei_cb_cp =
ldlm_completion_ast,
.ei_cb_gl = NULL,
.ei_cb_wg = NULL,
.ei_cbdata = NULL};
struct ldlm_enqueue_info einfo = {
.ei_type = LDLM_IBITS,
.ei_mode = mode,
.ei_cb_bl = ll_md_blocking_ast,
.ei_cb_cp = ldlm_completion_ast,
};
struct lookup_intent it = { .it_op = IT_READDIR };
struct ptlrpc_request *request;
struct md_op_data *op_data;

19
drivers/staging/lustre/lustre/llite/file.c
View file

@ -2290,9 +2290,11 @@ int ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
{
struct inode *inode = file->f_dentry->d_inode;
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ldlm_enqueue_info einfo = { .ei_type = LDLM_FLOCK,
.ei_cb_cp =ldlm_flock_completion_ast,
.ei_cbdata = file_lock };
struct ldlm_enqueue_info einfo = {
.ei_type = LDLM_FLOCK,
.ei_cb_cp = ldlm_flock_completion_ast,
.ei_cbdata = file_lock,
};
struct md_op_data *op_data;
struct lustre_handle lockh = {0};
ldlm_policy_data_t flock = {{0}};
@ -3116,11 +3118,12 @@ int ll_layout_refresh(struct inode *inode, __u32 *gen)
struct lookup_intent it;
struct lustre_handle lockh;
ldlm_mode_t mode;
struct ldlm_enqueue_info einfo = { .ei_type = LDLM_IBITS,
.ei_mode = LCK_CR,
.ei_cb_bl = ll_md_blocking_ast,
.ei_cb_cp = ldlm_completion_ast,
.ei_cbdata = NULL };
struct ldlm_enqueue_info einfo = {
.ei_type = LDLM_IBITS,
.ei_mode = LCK_CR,
.ei_cb_bl = ll_md_blocking_ast,
.ei_cb_cp = ldlm_completion_ast,
};
int rc;
ENTRY;

9
drivers/staging/lustre/lustre/mdc/mdc_locks.c
View file

@ -1102,9 +1102,12 @@ int mdc_intent_lock(struct obd_export *exp, struct md_op_data *op_data,
* this and use the request from revalidate. In this case, revalidate
* never dropped its reference, so the refcounts are all OK */
if (!it_disposition(it, DISP_ENQ_COMPLETE)) {
struct ldlm_enqueue_info einfo =
{ LDLM_IBITS, it_to_lock_mode(it), cb_blocking,
ldlm_completion_ast, NULL, NULL, NULL };
struct ldlm_enqueue_info einfo = {
.ei_type = LDLM_IBITS,
.ei_mode = it_to_lock_mode(it),
.ei_cb_bl = cb_blocking,
.ei_cb_cp = ldlm_completion_ast,
};
/* For case if upper layer did not alloc fid, do it now. */
if (!fid_is_sane(&op_data->op_fid2) && it->it_op & IT_CREAT) {

8
drivers/staging/lustre/lustre/mgc/mgc_request.c
View file

@ -900,8 +900,12 @@ static int mgc_enqueue(struct obd_export *exp, struct lov_stripe_md *lsm,
struct lustre_handle *lockh)
{
struct config_llog_data *cld = (struct config_llog_data *)data;
struct ldlm_enqueue_info einfo = { type, mode, mgc_blocking_ast,
ldlm_completion_ast, NULL, NULL, NULL };
struct ldlm_enqueue_info einfo = {
.ei_type = type,
.ei_mode = mode,
.ei_cb_bl = mgc_blocking_ast,
.ei_cb_cp = ldlm_completion_ast,
};
struct ptlrpc_request *req;
int short_limit = cld_is_sptlrpc(cld);
int rc;

122
drivers/staging/lustre/lustre/osc/osc_lock.c
View file

@ -89,35 +89,49 @@ static struct ldlm_lock *osc_handle_ptr(struct lustre_handle *handle)
*/
static int osc_lock_invariant(struct osc_lock *ols)
{
struct ldlm_lock *lock = osc_handle_ptr(&ols->ols_handle);
struct ldlm_lock *olock = ols->ols_lock;
int handle_used = lustre_handle_is_used(&ols->ols_handle);
struct ldlm_lock *lock = osc_handle_ptr(&ols->ols_handle);
struct ldlm_lock *olock = ols->ols_lock;
int handle_used = lustre_handle_is_used(&ols->ols_handle);
return
ergo(osc_lock_is_lockless(ols),
ols->ols_locklessable && ols->ols_lock == NULL) ||
(ergo(olock != NULL, handle_used) &&
ergo(olock != NULL,
olock->l_handle.h_cookie == ols->ols_handle.cookie) &&
/*
* Check that ->ols_handle and ->ols_lock are consistent, but
* take into account that they are set at the different time.
*/
ergo(handle_used,
ergo(lock != NULL && olock != NULL, lock == olock) &&
ergo(lock == NULL, olock == NULL)) &&
ergo(ols->ols_state == OLS_CANCELLED,
olock == NULL && !handle_used) &&
/*
* DLM lock is destroyed only after we have seen cancellation
* ast.
*/
ergo(olock != NULL && ols->ols_state < OLS_CANCELLED,
!olock->l_destroyed) &&
ergo(ols->ols_state == OLS_GRANTED,
olock != NULL &&
olock->l_req_mode == olock->l_granted_mode &&
ols->ols_hold));
if (ergo(osc_lock_is_lockless(ols),
ols->ols_locklessable && ols->ols_lock == NULL))
return 1;
/*
* If all the following "ergo"s are true, return 1, otherwise 0
*/
if (! ergo(olock != NULL, handle_used))
return 0;
if (! ergo(olock != NULL,
olock->l_handle.h_cookie == ols->ols_handle.cookie))
return 0;
if (! ergo(handle_used,
ergo(lock != NULL && olock != NULL, lock == olock) &&
ergo(lock == NULL, olock == NULL)))
return 0;
/*
* Check that ->ols_handle and ->ols_lock are consistent, but
* take into account that they are set at the different time.
*/
if (! ergo(ols->ols_state == OLS_CANCELLED,
olock == NULL && !handle_used))
return 0;
/*
* DLM lock is destroyed only after we have seen cancellation
* ast.
*/
if (! ergo(olock != NULL && ols->ols_state < OLS_CANCELLED,
((olock->l_flags & LDLM_FL_DESTROYED) == 0)))
return 0;
if (! ergo(ols->ols_state == OLS_GRANTED,
olock != NULL &&
olock->l_req_mode == olock->l_granted_mode &&
ols->ols_hold))
return 0;
return 1;
}
/*****************************************************************************
@ -261,7 +275,7 @@ static __u64 osc_enq2ldlm_flags(__u32 enqflags)
if (enqflags & CEF_ASYNC)
result |= LDLM_FL_HAS_INTENT;
if (enqflags & CEF_DISCARD_DATA)
result |= LDLM_AST_DISCARD_DATA;
result |= LDLM_FL_AST_DISCARD_DATA;
return result;
}
@ -896,55 +910,6 @@ static unsigned long osc_lock_weigh(const struct lu_env *env,
return cl_object_header(slice->cls_obj)->coh_pages;
}
/**
* Get the weight of dlm lock for early cancellation.
*
* XXX: it should return the pages covered by this \a dlmlock.
*/
static unsigned long osc_ldlm_weigh_ast(struct ldlm_lock *dlmlock)
{
struct cl_env_nest nest;
struct lu_env *env;
struct osc_lock *lock;
struct cl_lock *cll;
unsigned long weight;
ENTRY;
might_sleep();
/*
* osc_ldlm_weigh_ast has a complex context since it might be called
* because of lock canceling, or from user's input. We have to make
* a new environment for it. Probably it is implementation safe to use
* the upper context because cl_lock_put don't modify environment
* variables. But in case of ..
*/
env = cl_env_nested_get(&nest);
if (IS_ERR(env))
/* Mostly because lack of memory, tend to eliminate this lock*/
RETURN(0);
LASSERT(dlmlock->l_resource->lr_type == LDLM_EXTENT);
lock = osc_ast_data_get(dlmlock);
if (lock == NULL) {
/* cl_lock was destroyed because of memory pressure.
* It is much reasonable to assign this type of lock
* a lower cost.
*/
GOTO(out, weight = 0);
}
cll = lock->ols_cl.cls_lock;
cl_lock_mutex_get(env, cll);
weight = cl_lock_weigh(env, cll);
cl_lock_mutex_put(env, cll);
osc_ast_data_put(env, lock);
EXIT;
out:
cl_env_nested_put(&nest, env);
return weight;
}
static void osc_lock_build_einfo(const struct lu_env *env,
const struct cl_lock *clock,
struct osc_lock *lock,
@ -966,7 +931,6 @@ static void osc_lock_build_einfo(const struct lu_env *env,
einfo->ei_cb_bl = osc_ldlm_blocking_ast;
einfo->ei_cb_cp = osc_ldlm_completion_ast;
einfo->ei_cb_gl = osc_ldlm_glimpse_ast;
einfo->ei_cb_wg = osc_ldlm_weigh_ast;
einfo->ei_cbdata = lock; /* value to be put into ->l_ast_data */
}