X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=Documentation%2Fmd.txt;h=a8b430627473aa243995ab6f6e173b9cf1ff819e;hb=d5545fa0056ff2982f8a6419bd9a6ba2674deefd;hp=396cdd982c26505ee39a577a64a7fb2c7472985e;hpb=8f859016ea49cd8d7c743533bd1ab3db9a813ffa;p=linux-beck.git

diff --git a/Documentation/md.txt b/Documentation/md.txt
index 396cdd982c26..a8b430627473 100644
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -450,3 +450,9 @@ These currently include
       there are upper and lower limits (32768, 16).  Default is 128.
   strip_cache_active (currently raid5 only)
       number of active entries in the stripe cache
+  preread_bypass_threshold (currently raid5 only)
+      number of times a stripe requiring preread will be bypassed by
+      a stripe that does not require preread.  For fairness defaults
+      to 1.  Setting this to 0 disables bypass accounting and
+      requires preread stripes to wait until all full-width stripe-
+      writes are complete.  Valid values are 0 to stripe_cache_size.