函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\test_xarray.c Create Date:2022-07-27 07:31:31
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xa_store_many_order

函数原型：static noinline void xa_store_many_order(struct xarray *xa, unsigned long index, unsigned order)

返回类型：void

参数：

类型参数名称
struct xarray *xa
unsigned longindex
unsignedorder
1304  XA_STATE_ORDER() - Declare an XArray operation state.*@name: Name of this operation state (usually xas).*@array: Array to operate on.*@index: Initial index of interest.*@order: Order of entry.* Declare and initialise an xa_state on the stack(xas, xa, index, order)
1305  i等于0
1307  循环
1308  xas_lock( & xas)
1309  XA_BUG_ON(xa, xas_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.)
1310  xas_create_range() - Ensure that stores to this range will succeed*@xas: XArray operation state.* Creates all of the slots in the range covered by @xas. Sets @xas to* create single-index entries and positions it at the beginning of the* range
1311  如果xas_error() - Return an errno stored in the xa_state.*@xas: XArray operation state.* Return: 0 if no error has been noted. A negative errno if one has.则转到:unlock
1313  以i小于1U左移order位循环
1314  XA_BUG_ON(xa, xas_store() - Store this entry in the XArray)
1315  xas_next() - Move state to next index.*@xas: XArray operation state.* If the @xas was in an error state, it will remain in an error state* and this function will return %NULL. If the @xas has never been walked,
1317  unlock :
1318  xas_unlock( & xas)
1319  当xas_nomem() - Allocate memory if needed.*@xas: XArray operation state.*@gfp: Memory allocation flags.* If we need to add new nodes to the XArray, we try to allocate memory* with GFP_NOWAIT while holding the lock, which will usually succeed.循环
1321  XA_BUG_ON(xa, xas_error() - Return an errno stored in the xa_state.*@xas: XArray operation state.* Return: 0 if no error has been noted. A negative errno if one has.)
调用者
名称描述
check_create_range_1
check_create_range_2