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_retry() - Retry the operation if appropriate.*@xas: XArray operation state.*@entry: Entry from xarray.* The advanced functions may sometimes return an internal entry, such as* a retry entry or a zero entry. This function sets up the @xas to restart

函数原型：static inline bool xas_retry(struct xa_state *xas, const void *entry)

返回类型：bool

参数：

类型参数名称
struct xa_state *xas
const void *entry
1484  如果xa_is_zero() - Is the entry a zero entry?*@entry: Entry retrieved from the XArray* The normal API will return NULL as the contents of a slot containing* a zero entry. You can only see zero entries by using the advanced API.则返回:true
1486  如果非xa_is_retry() - Is the entry a retry entry?*@entry: Entry retrieved from the XArray* Return: %true if the entry is a retry entry.则返回:false
1488  xas_reset() - Reset an XArray operation state.*@xas: XArray operation state.* Resets the error or walk state of the @xas so future walks of the* array will start from the root. Use this if you have dropped the* xarray lock and want to reuse the xa_state.
1489  返回:true
调用者
名称描述
xa_loadxa_load() - Load an entry from an XArray.*@xa: XArray.*@index: index into array.* Context: Any context. Takes and releases the RCU lock.* Return: The entry at @index in @xa.
xa_findxa_find() - Search the XArray for an entry.*@xa: XArray.*@indexp: Pointer to an index.*@max: Maximum index to search to.*@filter: Selection criterion.* Finds the entry in @xa which matches the @filter, and has the lowest
xa_find_afterxa_find_after() - Search the XArray for a present entry.*@xa: XArray.*@indexp: Pointer to an index.*@max: Maximum index to search to.*@filter: Selection criterion.* Finds the entry in @xa which matches the @filter and has the lowest
xas_extract_present
xas_extract_marked
check_xas_retry
xa_find_entrySee find_swap_entry() in mm/shmem.c
filemap_range_has_pagelemap_range_has_page - check if a page exists in range
find_get_entryd_get_entry - find and get a page cache entry*@mapping: the address_space to search*@offset: the page cache index* Looks up the page cache slot at @mapping & @offset
find_get_entriesd_get_entries - gang pagecache lookup*@mapping: The address_space to search*@start: The starting page cache index*@nr_entries: The maximum number of entries*@entries: Where the resulting entries are placed*@indices: The cache indices corresponding to the
find_get_pages_ranged_get_pages_range - gang pagecache lookup*@mapping: The address_space to search*@start: The starting page index*@end: The final page index (inclusive)*@nr_pages: The maximum number of pages*@pages: Where the resulting pages are placed*
find_get_pages_contigd_get_pages_contig - gang contiguous pagecache lookup*@mapping: The address_space to search*@index: The starting page index*@nr_pages: The maximum number of pages*@pages: Where the resulting pages are placed* find_get_pages_contig() works exactly like
find_get_pages_range_tagd_get_pages_range_tag - find and return pages in given range matching @tag*@mapping: the address_space to search*@index: the starting page index*@end: The final page index (inclusive)*@tag: the tag index*@nr_pages: the maximum number of pages*@pages:
filemap_map_pages