1FIND_OR_CREATE_PAGE(9)    Memory Management in Linux    FIND_OR_CREATE_PAGE(9)
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NAME

6       find_or_create_page - locate or add a pagecache page
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SYNOPSIS

9       struct page * find_or_create_page(struct address_space * mapping,
10                                         pgoff_t index, gfp_t gfp_mask);
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ARGUMENTS

13       mapping
14           the page´s address_space
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16       index
17           the page´s index into the mapping
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19       gfp_mask
20           page allocation mode
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DESCRIPTION

23       Locates a page in the pagecache. If the page is not present, a new page
24       is allocated using gfp_mask and is added to the pagecache and to the
25       VM´s LRU list. The returned page is locked and has its reference count
26       incremented.
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28       find_or_create_page may sleep, even if gfp_flags specifies an atomic
29       allocation!
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31       find_or_create_page returns the desired page´s address, or zero on
32       memory exhaustion.
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35Kernel Hackers Manual 2.6.         June 2019            FIND_OR_CREATE_PAGE(9)
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