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| author | Baoquan He <bhe@redhat.com> | 2022-06-07 18:59:58 +0800 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-06-16 19:48:29 -0700 |
| commit | 153090f2c6d595c9636c582ed4b6c4dac1739a41 (patch) | |
| tree | 4ac5e0f569363b67fc9f70917ce96b72753aae23 /mm/vmalloc.c | |
| parent | baa468a648b489e35475c8de9dd1d77f0a687b4d (diff) | |
| download | linux-153090f2c6d595c9636c582ed4b6c4dac1739a41.tar.bz2 | |
mm/vmalloc: add code comment for find_vmap_area_exceed_addr()
Its behaviour is like find_vma() which finds an area above the specified
address, add comment to make it easier to understand.
And also fix two places of grammer mistake/typo.
Link: https://lkml.kernel.org/r/20220607105958.382076-5-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index b9bf7dfe71ec..fff3925c6f8f 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -790,6 +790,7 @@ unsigned long vmalloc_nr_pages(void) return atomic_long_read(&nr_vmalloc_pages); } +/* Look up the first VA which satisfies addr < va_end, NULL if none. */ static struct vmap_area *find_vmap_area_exceed_addr(unsigned long addr) { struct vmap_area *va = NULL; @@ -929,7 +930,7 @@ link_va(struct vmap_area *va, struct rb_root *root, * Some explanation here. Just perform simple insertion * to the tree. We do not set va->subtree_max_size to * its current size before calling rb_insert_augmented(). - * It is because of we populate the tree from the bottom + * It is because we populate the tree from the bottom * to parent levels when the node _is_ in the tree. * * Therefore we set subtree_max_size to zero after insertion, @@ -1655,7 +1656,7 @@ static atomic_long_t vmap_lazy_nr = ATOMIC_LONG_INIT(0); /* * Serialize vmap purging. There is no actual critical section protected - * by this look, but we want to avoid concurrent calls for performance + * by this lock, but we want to avoid concurrent calls for performance * reasons and to make the pcpu_get_vm_areas more deterministic. */ static DEFINE_MUTEX(vmap_purge_lock); |