Commit 7537dad7 authored Jun 18, 2019 by Qu Wenruo Committed by Mike Snitzer Jul 09, 2019

dm log writes: fix incorrect comment about the logged sequence example



dm-log-writes records the sequence of completion, not submission, thus
for the following sequence (W=write, C=complete):

  Wa,Wb,Wc,Cc,Ca,FLUSH,FUAd,Cb,CFLUSH,CFUAd

The logged results in log device should be:
  c,a,b,flush,fua

Fix the comment to give a better example.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent d4e6e836

drivers/md/dm-log-writes.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -40,7 +40,7 @@
		*
		* Would result in the log looking like this:
		*
		* c,a,flush,fuad,b,<other writes>,<next flush>
		* c,a,b,flush,fuad,<other writes>,<next flush>
		*
		* This is meant to help expose problems where file systems do not properly wait
		* on data being written before invoking a FLUSH. FUA bypasses cache so once it