mirror/glibc - mirror of git://sourceware.org/git/glibc.git

	Commit message (Collapse)	Author	Age	Files	Lines
*	Update copyright dates with scripts/update-copyrights.	Joseph Myers	2015-01-02	1	-1/+1
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*	Update copyright notices with scripts/update-copyrights	Allan McRae	2014-01-01	1	-1/+1
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*	Add missing includes to sysdeps/generic/malloc-sysdep.h.	Roland McGrath	2013-02-05	1	-0/+3
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*	Update copyright notices with scripts/update-copyrights.	Joseph Myers	2013-01-02	1	-1/+1
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*	Shrink heap on linux when overcommit_memory == 2	Siddhesh Poyarekar	2012-09-25	1	-0/+25
	Using madvise with MADV_DONTNEED to release memory back to the kernel is not sufficient to change the commit charge accounted against the process on Linux. It is OK however, when overcommit is enabled or is heuristic. However, when overcommit is restricted to a percentage of memory setting the contents of /proc/sys/vm/overcommit_memory as 2, it makes a difference since memory requests will fail. Hence, we do what we do with secure exec binaries, which is to call mmap on the region to be dropped with MAP_FIXED. This internally unmaps the pages in question and reduces the amount of memory accounted against the process.