Illumos #3964 L2ARC should always compress metadata buffers

[zfs.git] / include / sys / dbuf.h

diff --git a/include/sys/dbuf.h b/include/sys/dbuf.h
index f3e14aa..394fdfb 100644 (file)
--- a/include/sys/dbuf.h
+++ b/include/sys/dbuf.h
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
  */
 
 #ifndef        _SYS_DBUF_H
@@ -322,6 +323,10 @@ boolean_t dbuf_is_metadata(dmu_buf_impl_t *db);
        (DBUF_IS_METADATA(_db) &&                                       \
        ((_db)->db_objset->os_secondary_cache == ZFS_CACHE_METADATA)))
 
+#define        DBUF_IS_L2COMPRESSIBLE(_db)                                     \
+       ((_db)->db_objset->os_compress != ZIO_COMPRESS_OFF ||           \
+       (dbuf_is_metadata(_db) && zfs_mdcomp_disable == B_FALSE))
+
 #ifdef ZFS_DEBUG
 
 /*
@@ -345,13 +350,13 @@ boolean_t dbuf_is_metadata(dmu_buf_impl_t *db);
        } \
 _NOTE(CONSTCOND) } while (0)
 
-#define        dprintf_dbuf_bp(db, bp, fmt, ...) do {                  \
-       if (zfs_flags & ZFS_DEBUG_DPRINTF) {                    \
-       char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_SLEEP);  \
-       sprintf_blkptr(__blkbuf, bp);                           \
-       dprintf_dbuf(db, fmt " %s\n", __VA_ARGS__, __blkbuf);   \
-       kmem_free(__blkbuf, BP_SPRINTF_LEN);                    \
-       }                                                       \
+#define        dprintf_dbuf_bp(db, bp, fmt, ...) do {                          \
+       if (zfs_flags & ZFS_DEBUG_DPRINTF) {                            \
+       char *__blkbuf = kmem_alloc(BP_SPRINTF_LEN, KM_PUSHPAGE);       \
+       sprintf_blkptr(__blkbuf, bp);                                   \
+       dprintf_dbuf(db, fmt " %s\n", __VA_ARGS__, __blkbuf);           \
+       kmem_free(__blkbuf, BP_SPRINTF_LEN);                            \
+       }                                                               \
 _NOTE(CONSTCOND) } while (0)
 
 #define        DBUF_VERIFY(db) dbuf_verify(db)