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 b8d06fc for additional details. SPL: Fixing allocation for task txg_sync (6093) which used GFP flags 0x297bda7c with PF_NOFS set Signed-off-by: Chris Dunlop <[email protected]>
chrisrd · Oct 4, 2012 · 98f1e44 · 98f1e44
1 parent 0443477
commit 98f1e44
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/module/zfs/ddt_zap.c b/module/zfs/ddt_zap.c
@@ -62,7 +62,7 @@ ddt_zap_lookup(objset_t *os, uint64_t object, ddt_entry_t *dde)
 	uint64_t one, csize;
 	int error;
 
-	cbuf = kmem_alloc(sizeof (dde->dde_phys) + 1, KM_SLEEP);
+	cbuf = kmem_alloc(sizeof (dde->dde_phys) + 1, KM_PUSHPAGE);
 
 	error = zap_length_uint64(os, object, (uint64_t *)&dde->dde_key,
 	    DDT_KEY_WORDS, &one, &csize);