On Fri, Mar 03, 2023 at 08:44:41AM +0800, ye.xingchen@xxxxxxxxxx wrote: > From: Minghao Chi <chi.minghao@xxxxxxxxxx> > > Available only when CONFIG_COMPACTION is set. When 1 is written to > the file, all zones are compacted such that free memory is available > in contiguous blocks where possible. > But echo others-parameter > compact_memory, this function will be > triggered by writing parameters to the interface. > > Applied this patch, > sh/$ echo 1.1 > /proc/sys/vm/compact_memory > sh/$ sh: write error: Invalid argument > The start and end time of printing triggering compact_memory. > > Signed-off-by: Minghao Chi <chi.minghao@xxxxxxxxxx> > Signed-off-by: Ye Xingchen <ye.xingchen@xxxxxxxxxx> Do a huge favor and while you're at it split this into two patches, one which takes this out of kernel/sysctl.c and move it to mm/compaction.c and a second one that does your change here. Since kernel/sysctl.c is being trimmed you can base your changes on sysctl-next [0] and I'm happy to take in there if Andrew agrees to it. [0] https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=sysctl-next Luis
