kybaaz/linux-xiaomi-chiron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Mainly MM fixes. About half for issues which were introduced after 5.18

Browse source 
and the remainder for longer-term issues.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCYsxt9wAKCRDdBJ7gKXxA
 jnjWAQD6ts4tgsX+hQ5lrZjWRvYIxH/I4jbtxyMyhc+iKarotAD+NILVgrzIvr0v
 ijlA4LLtmdhN1UWdSomUm3bZVn6n+QA=
 =1375
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2022-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "Mainly MM fixes. About half for issues which were introduced after
  5.18 and the remainder for longer-term issues"

* tag 'mm-hotfixes-stable-2022-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: split huge PUD on wp_huge_pud fallback
  nilfs2: fix incorrect masking of permission flags for symlinks
  mm/rmap: fix dereferencing invalid subpage pointer in try_to_migrate_one()
  riscv/mm: fix build error while PAGE_TABLE_CHECK enabled without MMU
  Documentation: highmem: use literal block for code example in highmem.h comment
  mm: sparsemem: fix missing higher order allocation splitting
  mm/damon: use set_huge_pte_at() to make huge pte old
  sh: convert nommu io{re,un}map() to static inline functions
  mm: userfaultfd: fix UFFDIO_CONTINUE on fallocated shmem pages
This commit is contained in:
Linus Torvalds 2022-07-11 12:49:56 -07:00
commit 8e59a6a7a4
9 changed files with 63 additions and 38 deletions
Download patch file Download diff file Expand all files Collapse all files

18
include/linux/highmem.h
View file

@ -149,19 +149,19 @@ static inline void *kmap_local_folio(struct folio *folio, size_t offset);
* It is used in atomic context when code wants to access the contents of a
* page that might be allocated from high memory (see __GFP_HIGHMEM), for
* example a page in the pagecache. The API has two functions, and they
* can be used in a manner similar to the following:
* can be used in a manner similar to the following::
*
* -- Find the page of interest. --
* struct page *page = find_get_page(mapping, offset);
* // Find the page of interest.
* struct page *page = find_get_page(mapping, offset);
*
* -- Gain access to the contents of that page. --
* void *vaddr = kmap_atomic(page);
* // Gain access to the contents of that page.
* void *vaddr = kmap_atomic(page);
*
* -- Do something to the contents of that page. --
* memset(vaddr, 0, PAGE_SIZE);
* // Do something to the contents of that page.
* memset(vaddr, 0, PAGE_SIZE);
*
* -- Unmap that page. --
* kunmap_atomic(vaddr);
* // Unmap that page.
* kunmap_atomic(vaddr);
*
* Note that the kunmap_atomic() call takes the result of the kmap_atomic()
* call, not the argument.