1 files changed, 43 insertions, 4 deletions

diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
index 80d9336..068e68b 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zio.h
@@ -31,6 +31,7 @@
 #include <sys/spa.h>
 #include <sys/txg.h>
 #include <sys/avl.h>
+#include <sys/kstat.h>
 #include <sys/fs/zfs.h>
 #include <sys/zio_impl.h>
 
@@ -133,7 +134,8 @@ enum zio_compress {
 #define	ZIO_PRIORITY_RESILVER		(zio_priority_table[9])
 #define	ZIO_PRIORITY_SCRUB		(zio_priority_table[10])
 #define	ZIO_PRIORITY_DDT_PREFETCH	(zio_priority_table[11])
-#define	ZIO_PRIORITY_TABLE_SIZE		12
+#define	ZIO_PRIORITY_TRIM		(zio_priority_table[12])
+#define	ZIO_PRIORITY_TABLE_SIZE		13
 
 #define	ZIO_PIPELINE_CONTINUE		0x100
 #define	ZIO_PIPELINE_STOP		0x101
@@ -360,6 +362,39 @@ typedef struct zio_link {
 	list_node_t	zl_child_node;
 } zio_link_t;
 
+/*
+ * Used for TRIM kstat.
+ */
+typedef struct zio_trim_stats {
+	/*
+	 * Number of bytes successfully TRIMmed.
+	 */
+	kstat_named_t zio_trim_bytes;
+
+	/*
+	 * Number of successful TRIM requests.
+	 */
+	kstat_named_t zio_trim_success;
+
+	/*
+	 * Number of TRIM requests that failed because TRIM is not
+	 * supported.
+	 */
+	kstat_named_t zio_trim_unsupported;
+
+	/*
+	 * Number of TRIM requests that failed for other reasons.
+	 */
+	kstat_named_t zio_trim_failed;
+} zio_trim_stats_t;
+
+extern zio_trim_stats_t zio_trim_stats;
+
+#define ZIO_TRIM_STAT_INCR(stat, val) \
+	atomic_add_64(&zio_trim_stats.stat.value.ui64, (val));
+#define ZIO_TRIM_STAT_BUMP(stat) \
+	ZIO_TRIM_STAT_INCR(stat, 1);
+
 struct zio {
 	/* Core information about this I/O */
 	zbookmark_t	io_bookmark;
@@ -433,6 +468,8 @@ struct zio {
 	/* FreeBSD only. */
 	struct ostask	io_task;
 #endif
+	avl_node_t	io_trim_node;
+	list_node_t	io_trim_link;
 };
 
 extern zio_t *zio_null(zio_t *pio, spa_t *spa, vdev_t *vd,
@@ -463,8 +500,8 @@ extern zio_t *zio_claim(zio_t *pio, spa_t *spa, uint64_t txg,
     zio_done_func_t *done, void *priv, enum zio_flag flags);
 
 extern zio_t *zio_ioctl(zio_t *pio, spa_t *spa, vdev_t *vd, int cmd,
-    zio_done_func_t *done, void *priv, int priority,
-    enum zio_flag flags);
+    uint64_t offset, uint64_t size, zio_done_func_t *done, void *priv,
+    int priority, enum zio_flag flags);
 
 extern zio_t *zio_read_phys(zio_t *pio, vdev_t *vd, uint64_t offset,
     uint64_t size, void *data, int checksum,
@@ -477,12 +514,14 @@ extern zio_t *zio_write_phys(zio_t *pio, vdev_t *vd, uint64_t offset,
     boolean_t labels);
 
 extern zio_t *zio_free_sync(zio_t *pio, spa_t *spa, uint64_t txg,
-    const blkptr_t *bp, enum zio_flag flags);
+    const blkptr_t *bp, uint64_t size, enum zio_flag flags);
 
 extern int zio_alloc_zil(spa_t *spa, uint64_t txg, blkptr_t *new_bp,
     blkptr_t *old_bp, uint64_t size, boolean_t use_slog);
 extern void zio_free_zil(spa_t *spa, uint64_t txg, blkptr_t *bp);
 extern void zio_flush(zio_t *zio, vdev_t *vd);
+extern zio_t *zio_trim(zio_t *zio, spa_t *spa, vdev_t *vd, uint64_t offset,
+    uint64_t size);
 extern void zio_shrink(zio_t *zio, uint64_t size);
 
 extern int zio_wait(zio_t *zio);