On Tue, Jul 25, 2017 at 04:51:34PM -0400, jeffm@xxxxxxxx wrote: > From: Jeff Mahoney <jeffm@xxxxxxxx> > > We have the infrastructure to cache extent buffers but we don't actually > do the caching. As soon as the last reference is dropped, the buffer > is dropped. This patch keeps the extent buffers around until the max > cache size is reached (defaults to 25% of memory) and then it drops > the last 10% of the LRU to free up cache space for reallocation. The > cache size is configurable (for use by e.g. lowmem) when the cache is > initialized. > > Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx> I've started to merge the series, changed code according to the review. In this patch, test-mkfs and test-check fail (segfaults and assertions). A debugging build or asan (make D=all,asan) does not reproduce the errors so this will need to be found by other means. I also fixed some trivial coding style issues, so the changes are now in the branch https://github.com/kdave/btrfs-progs/tree/ext/jeffm/extent-cache Please use this as a starting point, I'm fine with resending just this patch or an incremental. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
