On 06/26/2014 04:00 PM, Rafael Aquini wrote: > Historically, we exported shared pages to userspace via sysinfo(2) sharedram > and /proc/meminfo's "MemShared" fields. With the advent of tmpfs, from kernel > v2.4 onward, that old way for accounting shared mem was deemed inaccurate and > we started to export a hard-coded 0 for sysinfo.sharedram. Later on, during > the 2.6 timeframe, "MemShared" got re-introduced to /proc/meminfo re-branded > as "Shmem", but we're still reporting sysinfo.sharedmem as that old hard-coded > zero, which makes the "shared memory" report inconsistent across interfaces. > > This patch leverages the addition of explicit accounting for pages used by > shmem/tmpfs -- "4b02108 mm: oom analysis: add shmem vmstat" -- in order to > make the users of sysinfo(2) and si_meminfo*() friends aware of that > vmstat entry and make them report it consistently across the interfaces, > as well to make sysinfo(2) returned data consistent with our current API > documentation states. > > Signed-off-by: Rafael Aquini <aquini@xxxxxxxxxx> Acked-by: Rik van Riel <riel@xxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>