Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\pagemap.h Create Date:2022-07-28 05:45:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:lock_page_or_retry - Lock the page, unless this would block and the* caller indicated that it can handle a retry.* Return value and mmap_sem implications depend on flags; see* __lock_page_or_retry().

Proto:static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm, unsigned int flags)

Type:int

Parameter:

TypeParameterName
struct page *page
struct mm_struct *mm
unsigned intflags
506  might_sleep()
507  Return Return true if the page was successfully locked || __lock_page_or_retry(page, mm, flags)
Caller
NameDescribe
do_swap_pageWe enter with non-exclusive mmap_sem (to exclude vma changes,* but allow concurrent faults), and pte mapped but not yet locked.* We return with pte unmapped and unlocked.* We return with the mmap_sem locked or unlocked in the same cases