This patch adds stuff about new reclaim field in proc.txt Acked-by: Rob Landley <rob@xxxxxxxxxxx> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> --- Documentation/filesystems/proc.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 488c094..ee4cef1 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -136,6 +136,7 @@ Table 1-1: Process specific entries in /proc maps Memory maps to executables and library files (2.4) mem Memory held by this process root Link to the root directory of this process + reclaim Reclaim pages in this process stat Process status statm Process memory status information status Process status in human readable form @@ -489,6 +490,25 @@ To clear the soft-dirty bit Any other value written to /proc/PID/clear_refs will have no effect. +The file /proc/PID/reclaim is used to reclaim pages in this process. +To reclaim file-backed pages, + > echo file > /proc/PID/reclaim + +To reclaim anonymous pages, + > echo anon > /proc/PID/reclaim + +To reclaim all pages, + > echo all > /proc/PID/reclaim + +Also, you can specify address range of process so part of address space +will be reclaimed. The format is following as + > echo addr size-byte > /proc/PID/reclaim + +NOTE: addr should be page-aligned. + +Below is example which try to reclaim 2M from 0x100000. + > echo 0x100000 2M > /proc/PID/reclaim + The /proc/pid/pagemap gives the PFN, which can be used to find the pageflags using /proc/kpageflags and number of times a page is mapped using /proc/kpagecount. For detailed explanation, see Documentation/vm/pagemap.txt. -- 1.8.2.1 -- 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>