Author: kib
Date: Fri Apr  5 16:14:16 2019
New Revision: 345955
URL: https://svnweb.freebsd.org/changeset/base/345955

Log:
  vn_vmap_seekhole(): align running offset to the block boundary.
  
  Otherwise we might miss the last iteration where EOF appears below
  unaligned noff.
  
  Reported and reviewed by:     markj
  Sponsored by: The FreeBSD Foundation
  MFC after:    1 week
  Differential revision:        https://reviews.freebsd.org/D19811

Modified:
  head/sys/kern/vfs_vnops.c

Modified: head/sys/kern/vfs_vnops.c
==============================================================================
--- head/sys/kern/vfs_vnops.c   Fri Apr  5 16:12:35 2019        (r345954)
+++ head/sys/kern/vfs_vnops.c   Fri Apr  5 16:14:16 2019        (r345955)
@@ -2167,7 +2167,8 @@ vn_bmap_seekhole(struct vnode *vp, u_long cmd, off_t *
                goto unlock;
        }
        bsize = vp->v_mount->mnt_stat.f_iosize;
-       for (bn = noff / bsize; noff < va.va_size; bn++, noff += bsize) {
+       for (bn = noff / bsize; noff < va.va_size; bn++, noff += bsize -
+           noff % bsize) {
                error = VOP_BMAP(vp, bn, NULL, &bnp, NULL, NULL);
                if (error == EOPNOTSUPP) {
                        error = ENOTTY;


_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"

Reply via email to