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/linux/fs/xfs/libxfs/
H A Dxfs_defer.c52 * requires us to log "intent" items in case log recovery needs to
58 * have not yet had an intent logged) are attached to a pending item
68 * - Create a log intent item for that type.
82 * log intent item.
83 * - For each work item attached to the log intent item,
91 * The key here is that we must log an intent item for all pending
94 * we can perform complex remapping operations, chaining intent items
106 * item to prevent the log intent item from replaying, immediately log
107 * a new log intent item with the unfinished work items, roll the
109 * log done item and the new log intent item must be in the same
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H A Dxfs_log_recover.h46 * If the recovered item is an intent item, this function should parse
47 * the recovered item to construct an in-core log intent item and
48 * insert it into the AIL. The in-core log intent item should have 1
50 * recovered log item for the intent-done item; (b) replay the work and
51 * log a new intent-done item; or (c) recovery fails and we have to
54 * If the recovered item is an intent-done item, this function should
55 * parse the recovered item to find the id of the corresponding intent
56 * log item. Next, it should find the in-core log intent item in the
147 * intent item.
149 * Intent recovery only runs a single step of the transaction chain and defers
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H A Dxfs_defer.h14 * Save a log intent item and a list of extents, so that we can replay
21 struct xfs_log_item *dfp_intent; /* log intent item */
29 * Create a log intent item for this deferred item, but don't actually finish
54 void (*abort_intent)(struct xfs_log_item *intent);
56 struct xfs_log_item *intent, unsigned int count);
65 struct xfs_log_item *intent,
H A Dxfs_log_format.h241 #define XFS_LI_RUI 0x1240 /* rmap update intent */
243 #define XFS_LI_CUI 0x1242 /* refcount update intent */
245 #define XFS_LI_BUI 0x1244 /* bmbt update intent */
247 #define XFS_LI_ATTRI 0x1246 /* attr set/remove intent*/
249 #define XFS_LI_XMI 0x1248 /* mapping exchange intent */
251 #define XFS_LI_EFI_RT 0x124a /* realtime extent free intent */
253 #define XFS_LI_RUI_RT 0x124c /* realtime rmap update intent */
255 #define XFS_LI_CUI_RT 0x124e /* realtime refcount update intent */
/linux/fs/xfs/
H A Dxfs_drain.h33 * Deferred Work Intent Drains
36 * When a writer thread executes a chain of log intent items, the AG header
37 * buffer locks will cycle during a transaction roll to get from one intent
48 * scrub wait until it has both AG header buffer locks and the intent counter
50 * AGI or AGF buffers when decrementing the intent counter.
57 * sub-items (such as RUIs) must bump the intent counter and maintain it until
58 * the sub-items can themselves bump the intent counter.
60 * Therefore, the intent count tracks entire lifetimes of deferred work items.
61 * All functions that create work items must increment the intent counter as
H A Dxfs_drain.c54 /* Increase the pending intent count. */
70 /* Decrease the pending intent count, and wake any waiters, if appropriate. */
86 * Wait for the pending intent count for a drain to hit zero.
98 * intent to update its metadata.
120 * Release our intent to update this groups metadata, and then release our
133 * Wait for the intent update count for this AG to hit zero.
145 * Has anyone declared an intent to update this group?
H A Dxfs_bmap_item.c243 /* Log bmap updates in the intent item. */
306 struct xfs_log_item *intent, in xfs_bmap_update_create_done() argument
309 struct xfs_bui_log_item *buip = BUI_ITEM(intent); in xfs_bmap_update_create_done()
333 * Bump the intent count on behalf of the deferred rmap and refcount in xfs_bmap_update_get_group()
334 * intent items that that we can queue when we finish this bmap work. in xfs_bmap_update_get_group()
335 * This new intent item will bump the intent count before the bmap in xfs_bmap_update_get_group()
336 * intent drops the intent count, ensuring that the intent count in xfs_bmap_update_get_group()
404 struct xfs_log_item *intent) in xfs_bmap_update_abort_intent() argument
406 xfs_bui_release(BUI_ITEM(intent)); in xfs_bmap_update_abort_intent()
481 * Process a bmap update intent item that was recovered from the log.
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H A Dxfs_rmap_item.c265 /* Log rmap updates in the intent item. */
366 struct xfs_log_item *intent, in xfs_rmap_update_create_done() argument
369 struct xfs_rui_log_item *ruip = RUI_ITEM(intent); in xfs_rmap_update_create_done()
453 struct xfs_log_item *intent) in xfs_rmap_update_abort_intent() argument
455 xfs_rui_release(RUI_ITEM(intent)); in xfs_rmap_update_abort_intent()
555 * Process an rmap update intent item that was recovered from the log.
611 /* Relog an intent item to push the log tail forward. */
615 struct xfs_log_item *intent, in xfs_rmap_relog_intent() argument
622 ASSERT(intent->li_type == XFS_LI_RUI || in xfs_rmap_relog_intent()
623 intent->li_type == XFS_LI_RUI_RT); in xfs_rmap_relog_intent()
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H A Dxfs_refcount_item.c264 /* Log refcount updates in the intent item. */
341 struct xfs_log_item *intent, in xfs_refcount_update_create_done() argument
344 struct xfs_cui_log_item *cuip = CUI_ITEM(intent); in xfs_refcount_update_create_done()
434 struct xfs_log_item *intent) in xfs_refcount_update_abort_intent() argument
436 xfs_cui_release(CUI_ITEM(intent)); in xfs_refcount_update_abort_intent()
490 * Process a refcount update intent item that was recovered from the log.
558 /* Relog an intent item to push the log tail forward. */
562 struct xfs_log_item *intent, in xfs_refcount_relog_intent() argument
569 ASSERT(intent->li_type == XFS_LI_CUI || in xfs_refcount_relog_intent()
570 intent->li_type == XFS_LI_CUI_RT); in xfs_refcount_relog_intent()
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H A Dxfs_bmap_item.h11 * The common abbreviations for these are BUI (bmap update intent) and BUD
21 * use the redo information recorded by the intent items to replay the
36 * This is the "bmap update intent" log item. It is used to log the fact that
H A Dxfs_refcount_item.h12 * update intent) and CUD (refcount update done). The redo item type
21 * recovery will use the redo information recorded by the intent items
36 * This is the "refcount update intent" log item. It is used to log
H A Dxfs_rmap_item.h12 * intent) and RUD (rmap update done). The redo item type is encoded in the
24 * use the redo information recorded by the intent items to replay the
39 * This is the "rmap update intent" log item. It is used to log the fact that
H A Dxfs_attr_item.c47 * attribute log intent items for a single xattr update. To avoid cycling the
366 /* Log an attr to the intent item. */
379 * created the log intent. Fill in the attri log item and log format in xfs_attr_log_item()
517 struct xfs_log_item *intent) in xfs_attr_abort_intent() argument
519 xfs_attri_release(ATTRI_ITEM(intent)); in xfs_attr_abort_intent()
730 * Process an attr intent item that was recovered from the log. We need to
807 /* Re-log an intent item to push the log tail forward. */
811 struct xfs_log_item *intent, in xfs_attr_relog_intent() argument
819 old_attrip = ATTRI_ITEM(intent); in xfs_attr_relog_intent()
853 struct xfs_log_item *intent, in xfs_attr_create_done() argument
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/linux/fs/bcachefs/
H A Dsix.h9 * Shared/intent/exclusive locks: sleepable read/write locks, like rw semaphores
10 * but with an additional state: read/shared, intent, exclusive/write
12 * The purpose of the intent state is to allow for greater concurrency on tree
17 * But by adding an intent state, which is exclusive with other intent locks but
18 * not with readers, we can take intent locks at the start of the operation,
26 * An intent lock must be held before taking a write lock:
37 * six_lock_downgrade() convert from intent to read
38 * six_lock_tryupgrade() attempt to convert from read to intent, may fail
69 * read and intent states that can be used to provide reentrancy by an upper
71 * read or intent state, six_lock_increment() can be used to bump the "lock
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H A Dbtree_iter.h22 static inline void __btree_path_get(struct btree_trans *trans, struct btree_path *path, bool intent) in __btree_path_get() argument
34 path->intent_ref += intent; in __btree_path_get()
38 static inline bool __btree_path_put(struct btree_trans *trans, struct btree_path *path, bool intent) in __btree_path_put() argument
43 EBUG_ON(!path->intent_ref && intent); in __btree_path_put()
46 path->intent_ref -= intent; in __btree_path_put()
211 btree_path_idx_t path, bool intent, in bch2_btree_path_make_mut() argument
216 path = __bch2_btree_path_make_mut(trans, path, intent, ip); in bch2_btree_path_make_mut()
228 bool intent, unsigned long ip) in bch2_btree_path_set_pos() argument
231 ? __bch2_btree_path_set_pos(trans, path, new_pos, intent, ip) in bch2_btree_path_set_pos()
H A Dsix.c640 * six_lock_downgrade - convert an intent lock to a read lock
643 * @lock will have read count incremented and intent count decremented
653 * six_lock_tryupgrade - attempt to convert read lock to an intent lock
656 * On success, @lock will have intent count incremented and read count
694 * On success, @lock will have intent count incremented and read count
786 * Return: the number of times a lock is held for read, intent and write.
809 * and intent locks on the same lock.
821 * intent one (or more) times, so @lock will never be left unlocked.
H A Dbtree_iter.c1120 /* If we need intent locks, take them too: */ in __btree_path_up_until_good_node()
1260 bool intent, unsigned long ip) in btree_path_clone() argument
1264 __btree_path_get(trans, trans->paths + new, intent); in btree_path_clone()
1273 btree_path_idx_t path, bool intent, unsigned long ip) in __bch2_btree_path_make_mut() argument
1276 __btree_path_put(trans, trans->paths + path, intent); in __bch2_btree_path_make_mut()
1277 path = btree_path_clone(trans, path, intent, ip); in __bch2_btree_path_make_mut()
1286 bool intent, unsigned long ip) in __bch2_btree_path_set_pos() argument
1295 path_idx = bch2_btree_path_make_mut(trans, path_idx, intent, ip); in __bch2_btree_path_set_pos()
1400 void bch2_path_put(struct btree_trans *trans, btree_path_idx_t path_idx, bool intent) in bch2_path_put() argument
1404 if (!__btree_path_put(trans, path, intent)) in bch2_path_put()
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/linux/include/uapi/linux/
H A Dmembarrier.h57 * registration is about the intent to receive
62 * Register the process intent to receive
82 * intent to use the private expedited command
86 * Register the process intent to use
108 * intent to use the private expedited sync
112 * Register the process intent to use
128 * intent to use the private expedited rseq
132 * Register the process intent to use
/linux/include/linux/
H A Dlru_cache.h48 This is known as "write intent log", and can be implemented as on-disk
53 in-flight WRITE IO, e.g. by only lazily clearing the on-disk write-intent
73 write intent log information, three of which are mentioned here.
76 The on-disk "dirty bitmap" may be re-used as "write-intent" bitmap as well.
77 To reduce the frequency of bitmap updates for write-intent log purposes,
84 "Explicit (coarse) write intent bitmap"
86 for write-intent log purposes, additionally to the fine grained dirty bitmap.
/linux/Documentation/ABI/testing/
H A Dsysfs-class-fpga-manager12 The intent is to provide enough detail that if something goes
44 error or incompatible bitstream image. The intent of this
/linux/fs/smb/client/
H A Dcifs_fs_sb.h36 #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
37 #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
/linux/drivers/net/
H A DLICENSE.SRC12 intent in sharing this software is to promote the productive interchange
/linux/tools/testing/selftests/net/
H A Dtoeplitz_client.sh7 # intent is for the calling program to kill this program once it is no longer
/linux/Documentation/security/
H A Dlsm-development.rst6 a new LSM is accepted into the kernel when its intent (a description of
/linux/drivers/net/ethernet/myricom/
H A DKconfig43 is used, with the intent of lessening the impact of cache misses.

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