d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Revert r346608

Browse Source 
That change was intended to be cosmetic, but it inadvertenly caused
vnode_pager_setsize to discard cached indirect blocks and extended
attributes on UFS during truncation.  The reason is because those blocks
have negative LBNs, which get sign-cast to positive VM indexes.

Reported by:	kib
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Alan Somers 2019-07-17 19:39:08 +00:00
parent 07e86257e6
commit 6cb46f390d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/fuse2/; revision=350092
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/vm/vnode_pager.c
View File

@ -464,7 +464,8 @@ vnode_pager_setsize(struct vnode *vp, vm_ooffset_t nsize)
* File has shrunk. Toss any cached pages beyond the new EOF.
*/
if (nobjsize < object->size)
vm_object_page_remove(object, nobjsize, 0, 0);
vm_object_page_remove(object, nobjsize, object->size,
0);
/*
* this gets rid of garbage at the end of a page that is now
* only partially backed by the vnode.