NothingOSS/android_kernel_msm-6.1_nothing_sm7635
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UPSTREAM: binder: initialize lru pages in mmap callback

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Rather than repeatedly initializing some of the binder_lru_page members
during binder_alloc_new_buf(), perform this initialization just once in
binder_alloc_mmap_handler(), after the pages have been created.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20231201172212.1813387-19-cmllamas@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 254650075
(cherry picked from commit 68aef12d094e4c96d972790f1620415460a4f3cf)
Change-Id: I3197038683f76a5cb98a79d017d1515429df2d73
Signed-off-by: Carlos Llamas <cmllamas@google.com>
This commit is contained in:
Carlos Llamas 2023-12-01 17:21:47 +00:00
parent 48554214a7
commit 2b6af2f338
1 changed files with 7 additions and 5 deletions
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12
drivers/android/binder_alloc.c
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@ -274,9 +274,6 @@ static int binder_allocate_page_range(struct binder_alloc *alloc,
trace_binder_alloc_page_start(alloc, index);
page->alloc = alloc;
INIT_LIST_HEAD(&page->lru);
ret = binder_install_single_page(alloc, page, page_addr);
if (ret) {
binder_free_page_range(alloc, start, page_addr);
@ -798,9 +795,9 @@ void binder_alloc_free_buf(struct binder_alloc *alloc,
int binder_alloc_mmap_handler(struct binder_alloc *alloc,
struct vm_area_struct *vma)
{
int ret;
const char *failure_string;
struct binder_buffer *buffer;
const char *failure_string;
int ret, i;
if (unlikely(vma->vm_mm != alloc->mm)) {
ret = -EINVAL;
@ -829,6 +826,11 @@ int binder_alloc_mmap_handler(struct binder_alloc *alloc,
goto err_alloc_pages_failed;
}
for (i = 0; i < alloc->buffer_size / PAGE_SIZE; i++) {
alloc->pages[i].alloc = alloc;
INIT_LIST_HEAD(&alloc->pages[i].lru);
}
buffer = kzalloc(sizeof(*buffer), GFP_KERNEL);
if (!buffer) {
ret = -ENOMEM;