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coredump: convert to vma iterator 

Use the vma iterator so that the iterator can be invalidated or updated to
avoid each caller doing so.

Link: https://lkml.kernel.org/r/20230120162650.984577-20-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Liam R. Howlett 2023-01-20 11:26:20 -05:00 committed by Andrew Morton
parent 37598f5a9d
commit e552cdb853
1 changed files with 4 additions and 4 deletions
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8
fs/coredump.c
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@ -1111,14 +1111,14 @@ whole:
* Helper function for iterating across a vma list. It ensures that the caller
* will visit `gate_vma' prior to terminating the search.
*/
static struct vm_area_struct *coredump_next_vma(struct ma_state *mas,
static struct vm_area_struct *coredump_next_vma(struct vma_iterator *vmi,
struct vm_area_struct *vma,
struct vm_area_struct *gate_vma)
{
if (gate_vma && (vma == gate_vma))
return NULL;
vma = mas_next(mas, ULONG_MAX);
vma = vma_next(vmi);
if (vma)
return vma;
return gate_vma;
@ -1146,7 +1146,7 @@ static bool dump_vma_snapshot(struct coredump_params *cprm)
{
struct vm_area_struct *gate_vma, *vma = NULL;
struct mm_struct *mm = current->mm;
MA_STATE(mas, &mm->mm_mt, 0, 0);
VMA_ITERATOR(vmi, mm, 0);
int i = 0;
/*
@ -1167,7 +1167,7 @@ static bool dump_vma_snapshot(struct coredump_params *cprm)
return false;
}
while ((vma = coredump_next_vma(&mas, vma, gate_vma)) != NULL) {
while ((vma = coredump_next_vma(&vmi, vma, gate_vma)) != NULL) {
struct core_vma_metadata *m = cprm->vma_meta + i;
m->start = vma->vm_start;