diff options
| author | Liam R. Howlett <Liam.Howlett@Oracle.com> | 2024-08-30 06:00:47 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-04 06:15:49 +0200 |
| commit | 89b2d2a57eb97eec2e782976844995f4dd189998 (patch) | |
| tree | 58b0c6696f518e71207360fc0c3e7966639f7485 /mm/vma.c | |
| parent | mm/vma: change munmap to use vma_munmap_struct() for accounting and surroundi... (diff) | |
| download | linux-89b2d2a57eb97eec2e782976844995f4dd189998.tar.xz linux-89b2d2a57eb97eec2e782976844995f4dd189998.zip | |
mm/vma: extract validate_mm() from vma_complete()
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>
Diffstat (limited to 'mm/vma.c')
| -rw-r--r-- | mm/vma.c | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -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; |