Makefile: allow tmpfs size to be more easily overridden, and use 500 MiB by default...

(The kernel will only allocate space that is used; the limit is just in case
tests write more than expected.)

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

diff --git a/Makefile b/Makefile
index a0e055830e8e672798b44c623f4f43fe9c94f16a..be3cd21baada117e13c34224954d335621cb8a4f 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -62,13 +62,16 @@ quicktest: make-version
        $(TAHOE) debug trial $(TRIALARGS) $(TEST)
 
 # "make tmpfstest" may be a faster way of running tests on Linux. It works best when you have
-# at least 330 MiB of free physical memory (to run the whole test suite). Since it uses sudo
-# to mount/unmount the tmpfs filesystem, it might prompt for your password.
+# at least $(TMPFS_SIZE) of free physical memory (to run the whole test suite). Since it uses
+# sudo to mount/unmount the tmpfs filesystem, it might prompt for your password.
+
+TMPFS_SIZE = 500m
+
 tmpfstest:
        time make _tmpfstest 'TMPDIR=$(shell mktemp -d --tmpdir=.)'
 
 _tmpfstest: make-version
-       sudo mount -t tmpfs -o size=400m tmpfs '$(TMPDIR)'
+       sudo mount -t tmpfs -o size=$(TMPFS_SIZE) tmpfs '$(TMPDIR)'
        -$(TAHOE) debug trial --rterrors '--temp-directory=$(TMPDIR)/_trial_temp' $(TRIALARGS) $(TEST)
        sudo umount '$(TMPDIR)'
        rmdir '$(TMPDIR)'