X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..765c9de3b4af7c2078d16a03812ae2c7c2b24938:/bsd/miscfs/devfs/devfs_tree.c?ds=inline

diff --git a/bsd/miscfs/devfs/devfs_tree.c b/bsd/miscfs/devfs/devfs_tree.c
index 8a335534a..60e1c0978 100644
--- a/bsd/miscfs/devfs/devfs_tree.c
+++ b/bsd/miscfs/devfs/devfs_tree.c
@@ -126,6 +126,11 @@ devfs_sinit(void)
 	MALLOC(devfs_hidden_mount, struct mount *, sizeof(struct mount),
 	       M_MOUNT, M_WAITOK);
 	bzero(devfs_hidden_mount,sizeof(struct mount));
+
+    /* Initialize the default IO constraints */
+    mp->mnt_maxreadcnt = mp->mnt_maxwritecnt = MAXPHYS;
+    mp->mnt_segreadcnt = mp->mnt_segwritecnt = 32;
+
 	devfs_mount(devfs_hidden_mount,"dummy",NULL,NULL,NULL);
 	dev_root->de_dnp->dn_dvm 
 	    = (struct devfsmount *)devfs_hidden_mount->mnt_data;