X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=include%2Fsys%2Farc.h;h=dbc91ea3dc40c138a115803570cfd166850aaf93;hb=9759c60f1a1503e48dc5c45a209c3edd5758319f;hp=8f189c62d31dd417314ad4057939c0d2189059bb;hpb=6283f55ea1b91e680386388c17d14b89e344fa8d;p=zfs.git

diff --git a/include/sys/arc.h b/include/sys/arc.h
index 8f189c6..dbc91ea 100644
--- a/include/sys/arc.h
+++ b/include/sys/arc.h
@@ -34,16 +34,27 @@ extern "C" {
 #include <sys/zio.h>
 #include <sys/dmu.h>
 #include <sys/spa.h>
+#include <sys/refcount.h>
 
 typedef struct arc_buf_hdr arc_buf_hdr_t;
 typedef struct arc_buf arc_buf_t;
+typedef struct arc_prune arc_prune_t;
 typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *private);
+typedef void arc_prune_func_t(int64_t bytes, void *private);
 typedef int arc_evict_func_t(void *private);
 
 /* generic arc_done_func_t's which you can use */
 arc_done_func_t arc_bcopy_func;
 arc_done_func_t arc_getbuf_func;
 
+/* generic arc_prune_func_t wrapper for callbacks */
+struct arc_prune {
+	arc_prune_func_t	*p_pfunc;
+	void			*p_private;
+	list_node_t		p_node;
+	refcount_t		p_refcnt;
+};
+
 struct arc_buf {
 	arc_buf_hdr_t		*b_hdr;
 	arc_buf_t		*b_next;
@@ -98,6 +109,7 @@ int arc_released(arc_buf_t *buf);
 int arc_has_callback(arc_buf_t *buf);
 void arc_buf_freeze(arc_buf_t *buf);
 void arc_buf_thaw(arc_buf_t *buf);
+boolean_t arc_buf_eviction_needed(arc_buf_t *buf);
 #ifdef ZFS_DEBUG
 int arc_referenced(arc_buf_t *buf);
 #endif
@@ -113,9 +125,13 @@ zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg,
     arc_done_func_t *ready, arc_done_func_t *done, void *private,
     int priority, int zio_flags, const zbookmark_t *zb);
 
+arc_prune_t *arc_add_prune_callback(arc_prune_func_t *func, void *private);
+void arc_remove_prune_callback(arc_prune_t *p);
+
 void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func, void *private);
 int arc_buf_evict(arc_buf_t *buf);
 
+void arc_adjust_meta(int64_t adjustment, boolean_t may_prune);
 void arc_flush(spa_t *spa);
 void arc_tempreserve_clear(uint64_t reserve);
 int arc_tempreserve_space(uint64_t reserve, uint64_t txg);
@@ -135,6 +151,11 @@ void l2arc_fini(void);
 void l2arc_start(void);
 void l2arc_stop(void);
 
+/* Global tunings */
+extern int zfs_write_limit_shift;
+extern unsigned long zfs_write_limit_max;
+extern kmutex_t zfs_write_limit_lock;
+
 #ifdef	__cplusplus
 }
 #endif