diff options
| author | Liam R. Howlett <Liam.Howlett@oracle.com> | 2023-05-18 10:55:44 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-06-09 16:25:35 -0700 |
| commit | 5c1c03de1b1636f041a275e777171307cac8d958 (patch) | |
| tree | 1bd50823eb4817f8f1a13814ab01bb06ea8d7411 /mm/mmap.c | |
| parent | bb5dbd2272b8d7b3a34d234bb916819afbf802d1 (diff) | |
mm: avoid rewalk in mmap_region
If the iterator has moved to the previous entry, then step forward one
range, back to the gap.
Link: https://lkml.kernel.org/r/20230518145544.1722059-36-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: David Binderman <dcb314@hotmail.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 19d3c843be0c..44be7fdfaac9 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2606,6 +2606,9 @@ unsigned long mmap_region(struct file *file, unsigned long addr, } cannot_expand: + if (prev) + vma_iter_next_range(&vmi); + /* * Determine the object being mapped and call the appropriate * specific mapper. the address has already been validated, but |