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authorBaoquan He <bhe@redhat.com>2022-06-07 18:59:58 +0800
committerakpm <akpm@linux-foundation.org>2022-06-16 19:48:29 -0700
commit153090f2c6d595c9636c582ed4b6c4dac1739a41 (patch)
tree4ac5e0f569363b67fc9f70917ce96b72753aae23 /mm/vmalloc.c
parentbaa468a648b489e35475c8de9dd1d77f0a687b4d (diff)
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.c5
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);