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Index: sys/cam/ata/ata_da.c
===================================================================
--- sys/cam/ata/ata_da.c
+++ sys/cam/ata/ata_da.c
@@ -857,6 +857,10 @@
#define ADA_DEFAULT_WRITE_CACHE 1
#endif
+#ifndef ADA_DEFAULT_MAX_DELETE
+#define ADA_DEFAULT_MAX_DELETE (1 * 1024 * 1024 * 1024) /* 1GB max trim by default */
+#endif
+
#define ADA_RA (softc->read_ahead >= 0 ? \
softc->read_ahead : ada_read_ahead)
#define ADA_WC (softc->write_cache >= 0 ? \
@@ -877,6 +881,7 @@
static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
+static int64_t ada_default_max_delete = ADA_DEFAULT_MAX_DELETE;
static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
@@ -894,6 +899,9 @@
&ada_read_ahead, 0, "Enable disk read-ahead");
SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RWTUN,
&ada_write_cache, 0, "Enable disk write cache");
+SYSCTL_QUAD(_kern_cam_ada, OID_AUTO, default_max_delete, CTLFLAG_RWTUN,
+ &ada_default_max_delete, 0,
+ "Default system wide maximum delete");
/*
* ADA_ORDEREDTAG_INTERVAL determines how often, relative
@@ -1844,6 +1852,8 @@
softc->disk->d_delmaxsize = 256 * softc->params.secsize;
} else
softc->disk->d_delmaxsize = maxio;
+ if (softc->disk->d_delmaxsize > ada_default_max_delete)
+ softc->disk->d_delmaxsize = ada_default_max_delete;
if ((cpi.hba_misc & PIM_UNMAPPED) != 0) {
softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
softc->unmappedio = 1;
Index: sys/cam/scsi/scsi_da.c
===================================================================
--- sys/cam/scsi/scsi_da.c
+++ sys/cam/scsi/scsi_da.c
@@ -1511,12 +1511,17 @@
#define DA_DEFAULT_SEND_ORDERED 1
#endif
+#ifndef DA_DEFAULT_MAX_DELETE
+#define DA_DEFAULT_MAX_DELETE (1 * 1024 * 1024 * 1024) /* 1GB max trim by default */
+#endif
+
static int da_poll_period = DA_DEFAULT_POLL_PERIOD;
static int da_retry_count = DA_DEFAULT_RETRY;
static int da_default_timeout = DA_DEFAULT_TIMEOUT;
static sbintime_t da_default_softtimeout = DA_DEFAULT_SOFTTIMEOUT;
static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
static int da_disable_wp_detection = 0;
+static int64_t da_default_max_delete = DA_DEFAULT_MAX_DELETE;
static SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
"CAM Direct Access Disk driver");
@@ -1531,6 +1536,9 @@
SYSCTL_INT(_kern_cam_da, OID_AUTO, disable_wp_detection, CTLFLAG_RWTUN,
&da_disable_wp_detection, 0,
"Disable detection of write-protected disks");
+SYSCTL_INT64(_kern_cam_da, OID_AUTO, default_max_delete, CTLFLAG_RWTUN,
+ &da_default_max_delete, 0,
+ "Default system wide maximum delete");
SYSCTL_PROC(_kern_cam_da, OID_AUTO, default_softtimeout,
CTLTYPE_UINT | CTLFLAG_RW, NULL, 0, dasysctlsofttimeout, "I",
@@ -2486,8 +2494,8 @@
return 0;
}
- return (off_t)softc->params.secsize *
- omin(sectors, softc->params.sectors);
+ return (off_t)MIN(da_default_max_delete, softc->params.secsize *
+ omin(sectors, softc->params.sectors));
}
static void

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