centos man page for try_to_release_page

TRY_TO_RELEASE_PAGE(9)					    Memory Management in Linux					    TRY_TO_RELEASE_PAGE(9)

NAME
       try_to_release_page - release old fs-specific metadata on a page

SYNOPSIS
       int try_to_release_page(struct page * page, gfp_t gfp_mask);

ARGUMENTS
       page
	   the page which the kernel is trying to free

       gfp_mask
	   memory allocation flags (and I/O mode)

DESCRIPTION
       The address_space is to try to release any data against the page (presumably at page->private). If the release was successful, return `1'.
       Otherwise return zero.

       This may also be called if PG_fscache is set on a page, indicating that the page is known to the local caching routines.

       The gfp_mask argument specifies whether I/O may be performed to release this page (__GFP_IO), and whether the call may block (__GFP_WAIT &
       __GFP_FS).

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    TRY_TO_RELEASE_PAGE(9)