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



NAME
       replace_page_cache_page - replace a pagecache page with a new one

SYNOPSIS
       int replace_page_cache_page(struct page * old, struct page * new, gfp_t gfp_mask);

ARGUMENTS
       old
           page to be replaced

       new
           page to replace with

       gfp_mask
           allocation mode

DESCRIPTION
       This function replaces a page in the pagecache with a new one. On success it acquires the
       pagecache reference for the new page and drops it for the old page. Both the old and new
       pages must be locked. This function does not add the new page to the LRU, the caller must
       do that.

       The remove + add is atomic. The only way this function can fail is memory allocation
       failure.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   REPLACE_PAGE_CACHE_P(9)