tcp: do_tcp_sendpages() must try to push data out on oom conditions

[linux-flexiantxendom0-3.2.10.git] / Documentation / md.txt

diff --git a/Documentation/md.txt b/Documentation/md.txt
index fc94770..993fba3 100644 (file)
--- a/Documentation/md.txt
+++ b/Documentation/md.txt
@@ -357,14 +357,14 @@ Each directory contains:
         written to, that device.
 
       state
-        A file recording the current state of the device in the array
+       A file recording the current state of the device in the array
        which can be a comma separated list of
              faulty   - device has been kicked from active use due to
-                         a detected fault or it has unacknowledged bad
-                         blocks
+                        a detected fault, or it has unacknowledged bad
+                        blocks
              in_sync  - device is a fully in-sync member of the array
              writemostly - device will only be subject to read
-                        requests if there are no other options.
+                        requests if there are no other options.
                         This applies only to raid1 arrays.
              blocked  - device has failed, and the failure hasn't been
                         acknowledged yet by the metadata handler.
@@ -374,6 +374,13 @@ Each directory contains:
                         This includes spares that are in the process
                         of being recovered to
              write_error - device has ever seen a write error.
+             want_replacement - device is (mostly) working but probably
+                        should be replaced, either due to errors or
+                        due to user request.
+             replacement - device is a replacement for another active
+                        device with same raid_disk.
+
+
        This list may grow in future.
        This can be written to.
        Writing "faulty"  simulates a failure on the device.
@@ -386,6 +393,13 @@ Each directory contains:
        Writing "in_sync" sets the in_sync flag.
        Writing "write_error" sets writeerrorseen flag.
        Writing "-write_error" clears writeerrorseen flag.
+       Writing "want_replacement" is allowed at any time except to a
+               replacement device or a spare.  It sets the flag.
+       Writing "-want_replacement" is allowed at any time.  It clears
+               the flag.
+       Writing "replacement" or "-replacement" is only allowed before
+               starting the array.  It sets or clears the flag.
+
 
        This file responds to select/poll. Any change to 'faulty'
        or 'blocked' causes an event.