函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\xarray.h Create Date:2022-07-27 06:43:51
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xas_set() - Set up XArray operation state for a different index

函数原型：static inline void xas_set(struct xa_state *xas, unsigned long index)

返回类型：void

参数：

类型参数名称
struct xa_state *xas
unsigned longindex
1542  xa_index等于index
1543  xa_node等于XAS_RESTART
调用者
名称描述
xas_set_range
ida_alloc_rangeda_alloc_range() - Allocate an unused ID.*@ida: IDA handle.*@min: Lowest ID to allocate.*@max: Highest ID to allocate.*@gfp: Memory allocation flags.* Allocate an ID between @min and @max, inclusive. The allocated ID will
check_xas_retry
check_xa_mark_1
check_xas_erase
check_multi_store_3
check_find_3
check_move_tiny
check_move_max
check_move_small
memfd_wait_for_pinsSetting SEAL_WRITE requires us to verify there's no pending writer. However,* via get_user_pages(), drivers might have some pending I/O without any active* user-space mappings (eg., direct-IO, AIO). Therefore, we look at all pages
dax_lock_pagedax_lock_mapping_entry - Lock the DAX entry corresponding to a page*@page: The page whose entry we want to lock* Context: Process context.* Return: A cookie to pass to dax_unlock_page() or 0 if the entry could* not be locked.
grab_mapping_entryFind page cache entry at given index. If it is a DAX entry, return it* with the entry locked. If the page cache doesn't contain an entry at* that index, add a locked empty entry.* When requesting an entry with size DAX_PMD, grab_mapping_entry() will