函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\xarray.c Create Date:2022-07-27 07:10:35
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xas_descend

函数原型：static void *xas_descend(struct xa_state *xas, struct xa_node *node)

返回类型：void

参数：

类型参数名称
struct xa_state *xas
struct xa_node *node
203  offset等于xtracts the offset within this node from the index
204  entry等于Private
206  xa_node等于node
207  如果xa_is_sibling() - Is the entry a sibling entry?*@entry: Entry retrieved from the XArray* Return: %true if the entry is a sibling entry.则
208  offset等于Private
209  entry等于Private
212  xa_offset等于offset
213  返回:entry
调用者
名称描述
xas_loadxas_load() - Load an entry from the XArray (advanced).*@xas: XArray operation state.* Usually walks the @xas to the appropriate state to load the entry* stored at xa_index. However, it will do nothing and return %NULL if*@xas is in an error state
xas_createxas_create() - Create a slot to store an entry in.*@xas: XArray operation state.*@allow_root: %true if we can store the entry in the root directly* Most users will not need to call this function directly, as it is called* by xas_store()
xas_find_conflictxas_find_conflict() - Find the next present entry in a range.*@xas: XArray operation state.* The @xas describes both a range and a position within that range.* Context: Any context. Expects xa_lock to be held.
xa_get_markxa_get_mark() - Inquire whether this mark is set on this entry.*@xa: XArray.*@index: Index of entry.*@mark: Mark number.* This function uses the RCU read lock, so the result may be out of date* by the time it returns