process_madvise.2: Defer to madvise(2) for description of 'advice' flags

Rather than repeating the description of MADV_COLD and MADV_PAGEOUT
in two pages, centralize the discussion in madvise(2), and refer
from process_madvise(2) ro madvise(2).

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man2/process_madvise.2

@@ -96,7 +96,15 @@ or accessible via the call
 .PP
 The
 .I advice
-argument is one of the values listed below.
+argument is one of the following values:
+.TP
+.BR MADV_COLD
+See
+.BR madvise (2).
+.TP
+.BR MADV_PAGEOUT
+See
+.BR madvise (2).
 .PP
 The
 .I flags
@@ -132,36 +140,6 @@ because of the performance implications of applying the hint,
 the caller must have the
 .B CAP_SYS_ADMIN
 capability.
-.\"
-.\" ======================================================================
-.\"
-.SS Linux-specific advice values
-The following Linux-specific
-.I advice
-values have no counterparts in the POSIX-specified
-.BR posix_madvise (3),
-and may or may not have counterparts in the
-.BR madvise (2)
-interface available on other implementations.
-.TP
-.BR MADV_COLD
-.\" commit 9c276cc65a58faf98be8e56962745ec99ab87636
-Deactivate a given range of pages.
-This will make the pages a more probable
-reclaim target should there be a memory pressure.
-This is a nondestructive operation.
-The advice might be ignored for some pages in the range when it is not
-applicable.
-.TP
-.BR MADV_PAGEOUT
-.\" commit 1a4e58cce84ee88129d5d49c064bd2852b481357
-Reclaim a given range of pages.
-This is done to free up memory occupied by these pages.
-If a page is anonymous, it will be swapped out.
-If a page is file-backed and dirty, it will be written back to the backing
-storage.
-The advice might be ignored for some pages in the range when it is not
-applicable.
 .SH RETURN VALUE
 On success,
 .BR process_madvise ()