Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-29 07:31:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

mm/vma: extract validate_mm() from vma_complete()

Browse Source 
vma_complete() will need to be called during an unsafe time to call
validate_mm().  Extract the call in all places now so that only one
location can be modified in the next change.

Link: https://lkml.kernel.org/r/20240830040101.822209-8-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Bert Karwatzki <spasswolf@web.de>
Cc: Jeff Xu <jeffxu@chromium.org>
Cc: Jiri Olsa <olsajiri@gmail.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liam R. Howlett 2024-08-30 00:00:47 -04:00 committed by Andrew Morton
parent 17f1ae9b40
commit 89b2d2a57e
2 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
mm/mmap.c
View File

@ -1796,6 +1796,7 @@ static int do_brk_flags(struct vma_iterator *vmi, struct vm_area_struct *vma,
vma_iter_store(vmi, vma);
vma_complete(&vp, vmi, mm);
validate_mm(mm);
khugepaged_enter_vma(vma, flags);
goto out;
}

5
mm/vma.c
View File

@ -269,6 +269,7 @@ static int __split_vma(struct vma_iterator *vmi, struct vm_area_struct *vma,
/* vma_complete stores the new vma */
vma_complete(&vp, vmi, vma->vm_mm);
validate_mm(vma->vm_mm);
/* Success. */
if (new_below)
@ -548,6 +549,7 @@ int vma_expand(struct vma_iterator *vmi, struct vm_area_struct *vma,
vma_iter_store(vmi, vma);
vma_complete(&vp, vmi, vma->vm_mm);
validate_mm(vma->vm_mm);
return 0;
nomem:
@ -589,6 +591,7 @@ int vma_shrink(struct vma_iterator *vmi, struct vm_area_struct *vma,
vma_iter_clear(vmi);
vma_set_range(vma, start, end, pgoff);
vma_complete(&vp, vmi, vma->vm_mm);
validate_mm(vma->vm_mm);
return 0;
}
@ -668,7 +671,6 @@ again:
}
if (vp->insert && vp->file)
uprobe_mmap(vp->insert);
validate_mm(mm);
}
/*
@ -1197,6 +1199,7 @@ static struct vm_area_struct
}
vma_complete(&vp, vmi, mm);
validate_mm(mm);
khugepaged_enter_vma(res, vm_flags);
return res;