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| author | Liam R. Howlett <Liam.Howlett@Oracle.com> | 2023-01-20 11:26:34 -0500 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-09 16:51:36 -0800 |
| commit | 85ab779e3426dc47cc27418821e6577680b509b9 (patch) | |
| tree | 7bed88f3827e5a6ca313d49271feeda3d4d00332 /mm/madvise.c | |
| parent | 9e56044625a1f472edc278105f41a60726991d89 (diff) | |
| download | lwn-85ab779e3426dc47cc27418821e6577680b509b9.tar.gz lwn-85ab779e3426dc47cc27418821e6577680b509b9.zip | |
madvise: use split_vma() instead of __split_vma()
The split_vma() wrapper is specifically for this use case, so use it.
[Liam.Howlett@oracle.com: fix VMA_ITERATOR start position]
Link: https://lkml.kernel.org/r/20230125135809.85262-1-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20230120162650.984577-34-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/madvise.c')
| -rw-r--r-- | mm/madvise.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 02b317726c9a..ca672e37b38c 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -142,7 +142,7 @@ static int madvise_update_vma(struct vm_area_struct *vma, struct mm_struct *mm = vma->vm_mm; int error; pgoff_t pgoff; - VMA_ITERATOR(vmi, mm, 0); + VMA_ITERATOR(vmi, mm, start); if (new_flags == vma->vm_flags && anon_vma_name_eq(anon_vma_name(vma), anon_name)) { *prev = vma; @@ -161,17 +161,13 @@ static int madvise_update_vma(struct vm_area_struct *vma, *prev = vma; if (start != vma->vm_start) { - if (unlikely(mm->map_count >= sysctl_max_map_count)) - return -ENOMEM; - error = __split_vma(&vmi, vma, start, 1); + error = split_vma(&vmi, vma, start, 1); if (error) return error; } if (end != vma->vm_end) { - if (unlikely(mm->map_count >= sysctl_max_map_count)) - return -ENOMEM; - error = __split_vma(&vmi, vma, end, 0); + error = split_vma(&vmi, vma, end, 0); if (error) return error; } |