PageTail

Name:PageTail

Proto:static __always_inline int PageTail(struct page *page)

Type:int

Parameter:

Type	Parameter	Name
struct page *	page

183

Return READ_ONCE( Bit zero is set ) & 1

**Caller**
Name	Describe
page_cache_delete	Lock 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
unaccount_page_cache_page
truncate_inode_page
isolate_lru_page	solate_lru_page - tries to isolate a page from its LRU list@page: page to isolate from its LRU list Isolates a @page from an LRU list, clears PageLRU and adjusts the* vmstat statistic corresponding to whatever LRU list the page was on.
mlock_vma_page	Mark page as mlocked if not already.* If page on LRU, isolate and putback to move to unevictable list.
munlock_vma_page	munlock_vma_page - munlock a vma page@page: page to be unlocked, either a normal page or THP page head returns the size of the page as a page mask (0 for normal page,* HPAGE_PMD_NR - 1 for THP head page)
free_tail_pages_check
free_pages_prepare
slab_lock	Per slab locking using the pagelock
slab_unlock
remove_migration_pte	Restore a potential migration pte to a working pte entry
total_mapcount
split_huge_page_to_list	This function splits huge page into normal pages. @page can point to any* subpage of huge page to split. Split doesn't change the position of @page.* Only caller must hold pin on the @page, otherwise split fails with -EBUSY.* The huge page must be locked.
page_cgroup_ino	page_cgroup_ino - return inode number of the memcg a page is charged to@page: the page Look up the closest online ancestor of the memory cgroup @page is charged to* and return its inode number or 0 if @page is not charged to any cgroup. It

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