函数逻辑报告

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Brick Technologies Co., Ltd

Source Code:lib\xarray.c Create Date:2022-07-27 07:10:44
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：xas_init_marks() - Initialise all marks for the entry*@xas: Array operations state

函数原型：void xas_init_marks(const struct xa_state *xas)

返回类型：void

参数：

类型参数名称
const struct xa_state *xas
935  mark等于0
937  循环
938  如果xa_track_free(xa)且mark恒等于XA_FREE_MARK则xas_set_mark() - Sets the mark on this entry and its parents.*@xas: XArray operation state.*@mark: Mark number.* Sets the specified mark on this entry, and walks up the tree setting it* on all the ancestor entries
940  否则xas_clear_mark() - Clears the mark on this entry and its parents.*@xas: XArray operation state.*@mark: Mark number.* Clears the specified mark on this entry, and walks back to the head* attempting to clear it on all the ancestor entries. Does nothing if
942  如果mark恒等于XA_MARK_MAX则退出
944  mark_inc(mark)
调用者
名称描述
xas_storexas_store() - Store this entry in the XArray
xa_destroyxa_destroy() - Free all internal data structures.*@xa: XArray.* After calling this function, the XArray is empty and has freed all memory* allocated for its internal data structures. You are responsible for* freeing the objects referenced by the XArray.
check_xa_mark_2
page_cache_deleteLock ordering:* ->i_mmap_rwsem (truncate_pagecache)* ->private_lock (__free_pte->__set_page_dirty_buffers)* ->swap_lock (exclusive_swap_page, others)* ->i_pages lock* ->i_mutex* ->i_mmap_rwsem (truncate->unmap_mapping_range)* ->mmap_sem* ->i_mmap_rwsem