svn commit: r365784 - in head/sys: kern sys

Konstantin Belousov kib at FreeBSD.org
Tue Sep 15 22:00:59 UTC 2020


Author: kib
Date: Tue Sep 15 22:00:58 2020
New Revision: 365784
URL: https://svnweb.freebsd.org/changeset/base/365784

Log:
  vfs_subr.c: export io_hold_cnt and vn_read_from_obj().
  
  Reviewed by:	markj
  Tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  Differential revision:	https://reviews.freebsd.org/D26346

Modified:
  head/sys/kern/vfs_vnops.c
  head/sys/sys/vnode.h

Modified: head/sys/kern/vfs_vnops.c
==============================================================================
--- head/sys/kern/vfs_vnops.c	Tue Sep 15 21:55:21 2020	(r365783)
+++ head/sys/kern/vfs_vnops.c	Tue Sep 15 22:00:58 2020	(r365784)
@@ -125,7 +125,7 @@ struct 	fileops vnops = {
 	.fo_flags = DFLAG_PASSABLE | DFLAG_SEEKABLE
 };
 
-static const int io_hold_cnt = 16;
+const u_int io_hold_cnt = 16;
 static int vn_io_fault_enable = 1;
 SYSCTL_INT(_debug, OID_AUTO, vn_io_fault_enable, CTLFLAG_RWTUN,
     &vn_io_fault_enable, 0, "Enable vn_io_fault lock avoidance");
@@ -848,7 +848,7 @@ get_advice(struct file *fp, struct uio *uio)
 	return (ret);
 }
 
-static int
+int
 vn_read_from_obj(struct vnode *vp, struct uio *uio)
 {
 	vm_object_t obj;

Modified: head/sys/sys/vnode.h
==============================================================================
--- head/sys/sys/vnode.h	Tue Sep 15 21:55:21 2020	(r365783)
+++ head/sys/sys/vnode.h	Tue Sep 15 22:00:58 2020	(r365784)
@@ -392,6 +392,7 @@ MALLOC_DECLARE(M_VNODE);
 #endif
 
 extern u_int ncsizefactor;
+extern const u_int io_hold_cnt;
 
 /*
  * Convert between vnode types and inode formats (since POSIX.1
@@ -734,7 +735,8 @@ int	vn_rdwr_inchunks(enum uio_rw rw, struct vnode *vp,
 	    size_t len, off_t offset, enum uio_seg segflg, int ioflg,
 	    struct ucred *active_cred, struct ucred *file_cred, size_t *aresid,
 	    struct thread *td);
-int	vn_rlimit_fsize(const struct vnode *vn, const struct uio *uio,
+int	vn_read_from_obj(struct vnode *vp, struct uio *uio);
+int	vn_rlimit_fsize(const struct vnode *vp, const struct uio *uio,
 	    struct thread *td);
 int	vn_start_write(struct vnode *vp, struct mount **mpp, int flags);
 int	vn_start_secondary_write(struct vnode *vp, struct mount **mpp,


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