On Mon, Jul 26, 2021 at 05:12:46PM -0700, Evan Green wrote: > Swap regions with SWAP_FLAG_HIBERNATE_ONLY set will not appear in > /proc/meminfo under SwapTotal and SwapFree, since they are not usable as > general swap. These regions do still appear in /proc/swaps. Off-topic, /proc/swaps is in the same situation like /proc/mounts years ago ... It does not provide all important information like SWAP_FLAG_DISCARD_PAGES SWAP_FLAG_DISCARD_ONCE and SWAP_FLAG_HIBERNATE_ONLY flags. Users will not able to differentiate between regular and hibernate-only devices in "swapon" or "cat /proc/swaps" output ;-( It would be nice to have /proc/swapsinfo with extendible "flags" column. Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com
