From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Mon, 17 Sep 2012 18:22:23 +0000 (-0700)
Subject: Switch KM_SLEEP to KM_PUSHPAGE
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;ds=inline;h=ba367276d84e126dc3a13677c286539d0019e3b8;p=zfs.git

Switch KM_SLEEP to KM_PUSHPAGE

This warning indicates the incorrect use of KM_SLEEP in a call
path which must use KM_PUSHPAGE to avoid deadlocking in direct
reclaim.  See commit b8d06fca089fae4680c3a552fc55c512bfb02202
for additional details.

  SPL: Fixing allocation for task txg_sync (6093) which
  used GFP flags 0x297bda7c with PF_NOFS set

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #917
---

diff --git a/module/zfs/dsl_prop.c b/module/zfs/dsl_prop.c
index 64c44b9..e44a948 100644
--- a/module/zfs/dsl_prop.c
+++ b/module/zfs/dsl_prop.c
@@ -697,7 +697,7 @@ dsl_prop_set_sync(void *arg1, void *arg2, dmu_tx_t *tx)
 		if (source == ZPROP_SRC_LOCAL) {
 			valstr = (char *)psa->psa_value;
 		} else {
-			tbuf = kmem_alloc(ZAP_MAXVALUELEN, KM_SLEEP);
+			tbuf = kmem_alloc(ZAP_MAXVALUELEN, KM_PUSHPAGE);
 			if (dsl_prop_get_ds(ds, propname, 1,
 			    ZAP_MAXVALUELEN, tbuf, NULL) == 0)
 				valstr = tbuf;