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Searched refs:xa_state (Results 1 – 10 of 10) sorted by relevance

/linux-6.12.1/Documentation/translations/zh_CN/core-api/
Dxarray.rst256 高级API是基于xa_state的。这是一个不透明的数据结构，你使用XA_STATE()宏在堆栈中声明。这个宏初始化了
257 xa_state，准备开始在XArray上移动。它被用作一个游标来保持在XArray中的位置，并让你把各种操作组合在一
258 起，而不必每次都从头开始。xa_state的内容受rcu_read_lock()或xas_lock()的保护。如果需要删除保护状态
261 xa_state也被用来存储错误(store errors)。你可以调用xas_error()来检索错误。所有的操作在进行之前都
262 会检查xa_state是否处于错误状态，所以你没有必要在每次调用之后检查错误；你可以连续进行多次调用，只在
266 如果xa_state持有 ``ENOMEM`` 错误，调用xas_nomem()将尝试使用指定的gfp标志分配更多的内存，并将其缓
267 存在xa_state中供下一次尝试。这个想法是，你拿着xa_lock，尝试操作，然后放弃锁。该操作试图在持有锁的情
287 - 一个XArray节点。 在使用多索引xa_state时可能是可见的。
309 xa_state中设置ENOMEM。
315 xas_load()会尽可能地将xa_state移动到该条目附近。如果你知道xa_state已经移动到了该条目，并且需要检查
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/linux-6.12.1/include/linux/
Dxarray.h1348 struct xa_state { struct
1391 struct xa_state name = __XA_STATE(array, index, 0, 0)
1405 struct xa_state name = __XA_STATE(array, \
1429 static inline int xas_error(const struct xa_state *xas) in xas_error()
1443 static inline void xas_set_err(struct xa_state *xas, long err) in xas_set_err()
1454 static inline bool xas_invalid(const struct xa_state *xas) in xas_invalid()
1465 static inline bool xas_valid(const struct xa_state *xas) in xas_valid()
1476 static inline bool xas_is_node(const struct xa_state *xas) in xas_is_node()
1509 static inline void xas_reset(struct xa_state *xas) in xas_reset()
1526 static inline bool xas_retry(struct xa_state *xas, const void *entry) in xas_retry()
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/linux-6.12.1/lib/
Dxarray.c38 static inline void xas_lock_type(struct xa_state *xas, unsigned int lock_type) in xas_lock_type()
48 static inline void xas_unlock_type(struct xa_state *xas, unsigned int lock_type) in xas_unlock_type()
126 static void xas_squash_marks(const struct xa_state *xas) in xas_squash_marks()
149 static void xas_set_offset(struct xa_state *xas) in xas_set_offset()
155 static void xas_move_index(struct xa_state *xas, unsigned long offset) in xas_move_index()
162 static void xas_next_offset(struct xa_state *xas) in xas_next_offset()
168 static void *set_bounds(struct xa_state *xas) in set_bounds()
181 static void *xas_start(struct xa_state *xas) in xas_start()
203 static __always_inline void *xas_descend(struct xa_state *xas, in xas_descend()
236 void *xas_load(struct xa_state *xas) in xas_load()
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/linux-6.12.1/arch/arm64/kernel/
Dhibernate.c243 XA_STATE(xa_state, &mte_pages, 0); in swsusp_mte_free_storage()
247 xas_for_each(&xa_state, tags, ULONG_MAX) { in swsusp_mte_free_storage()
293 XA_STATE(xa_state, &mte_pages, 0); in swsusp_mte_restore_tags()
298 xas_for_each(&xa_state, tags, ULONG_MAX) { in swsusp_mte_restore_tags()
299 unsigned long pfn = xa_state.xa_index; in swsusp_mte_restore_tags()
/linux-6.12.1/arch/arm64/mm/
Dmteswap.c84 XA_STATE(xa_state, &mte_pages, entry.val); in mte_invalidate_tags_area()
87 xas_for_each(&xa_state, tags, last_entry.val - 1) { in mte_invalidate_tags_area()
88 __xa_erase(&mte_pages, xa_state.xa_index); in mte_invalidate_tags_area()
/linux-6.12.1/Documentation/core-api/
Dxarray.rst317 The advanced API is based around the xa_state. This is an opaque data
319 This macro initialises the xa_state ready to start walking around the
322 from the top every time. The contents of the xa_state are protected by
328 The xa_state is also used to store errors. You can call
330 the xa_state is in an error state before proceeding, so there's no need
337 If the xa_state is holding an ``ENOMEM`` error, calling xas_nomem()
339 cache it in the xa_state for the next attempt. The idea is that you take
366 - An XArray node. May be visible when using a multi-index xa_state.
394 to store every entry in a range. It will set ENOMEM in the xa_state if
404 The xas_load() will walk the xa_state as close to the entry
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/linux-6.12.1/fs/
Ddax.c143 static wait_queue_head_t *dax_entry_waitqueue(struct xa_state *xas, in dax_entry_waitqueue()
181 static void dax_wake_entry(struct xa_state *xas, void *entry, in dax_wake_entry()
209 static void *get_unlocked_entry(struct xa_state *xas, unsigned int order) in get_unlocked_entry()
243 static void wait_entry_unlocked(struct xa_state *xas, void *entry) in wait_entry_unlocked()
264 static void put_unlocked_entry(struct xa_state *xas, void *entry, in put_unlocked_entry()
276 static void dax_unlock_entry(struct xa_state *xas, void *entry) in dax_unlock_entry()
292 static void *dax_lock_entry(struct xa_state *xas, void *entry) in dax_lock_entry()
573 static void *grab_mapping_entry(struct xa_state *xas, in grab_mapping_entry()
869 static void *dax_insert_entry(struct xa_state *xas, struct vm_fault *vmf, in dax_insert_entry()
926 static int dax_writeback_one(struct xa_state *xas, struct dax_device *dax_dev, in dax_writeback_one()
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/linux-6.12.1/mm/
Dmemfd.c38 static void memfd_tag_pins(struct xa_state *xas) in memfd_tag_pins()
Dfilemap.c128 static void mapping_set_update(struct xa_state *xas, in mapping_set_update()
1985 static inline struct folio *find_get_entry(struct xa_state *xas, pgoff_t max, in find_get_entry()
2983 static inline loff_t folio_seek_hole_data(struct xa_state *xas, in folio_seek_hole_data()
3016 static inline size_t seek_folio_size(struct xa_state *xas, struct folio *folio) in seek_folio_size()
3490 static struct folio *next_uptodate_folio(struct xa_state *xas, in next_uptodate_folio()
/linux-6.12.1/fs/cachefiles/
Dondemand.c358 static struct cachefiles_req *cachefiles_ondemand_select_req(struct xa_state *xas, in cachefiles_ondemand_select_req()
383 struct xa_state *xas, int err) in cachefiles_ondemand_finish_req()