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

6       replace_page_cache_page - replace a pagecache page with a new one
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SYNOPSIS

9       int replace_page_cache_page(struct page * old, struct page * new,
10                                   gfp_t gfp_mask);
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ARGUMENTS

13       old
14           page to be replaced
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16       new
17           page to replace with
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19       gfp_mask
20           allocation mode
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DESCRIPTION

23       This function replaces a page in the pagecache with a new one. On
24       success it acquires the pagecache reference for the new page and drops
25       it for the old page. Both the old and new pages must be locked. This
26       function does not add the new page to the LRU, the caller must do that.
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28       The remove + add is atomic. The only way this function can fail is
29       memory allocation failure.
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32Kernel Hackers Manual 3.10         June 2019           REPLACE_PAGE_CACHE_P(9)
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