diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-07 17:16:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-03-07 17:16:38 -0800 |
| commit | 3aaa8ce7a3350d95b241046ae2401103a4384ba2 (patch) | |
| tree | 8284fc148a1980cfbf11b6df0466ce3f04740ae2 /mm/userfaultfd.c | |
| parent | c381c89de18015fab265d18d2fa2f30b395be216 (diff) | |
| parent | ded79af42f114bb89f8e90c8e7337f5b7bb5f015 (diff) | |
Merge tag 'mm-hotfixes-stable-2024-03-07-16-17' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"6 hotfixes. 4 are cc:stable and the remainder pertain to post-6.7
issues or aren't considered to be needed in earlier kernel versions"
* tag 'mm-hotfixes-stable-2024-03-07-16-17' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
scripts/gdb/symbols: fix invalid escape sequence warning
mailmap: fix Kishon's email
init/Kconfig: lower GCC version check for -Warray-bounds
mm, mmap: fix vma_merge() case 7 with vma_ops->close
mm: userfaultfd: fix unexpected change to src_folio when UFFDIO_MOVE fails
mm, vmscan: prevent infinite loop for costly GFP_NOIO | __GFP_RETRY_MAYFAIL allocations
Diffstat (limited to 'mm/userfaultfd.c')
| -rw-r--r-- | mm/userfaultfd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 7cf7d4384259..313f1c42768a 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -914,9 +914,6 @@ static int move_present_pte(struct mm_struct *mm, goto out; } - folio_move_anon_rmap(src_folio, dst_vma); - WRITE_ONCE(src_folio->index, linear_page_index(dst_vma, dst_addr)); - orig_src_pte = ptep_clear_flush(src_vma, src_addr, src_pte); /* Folio got pinned from under us. Put it back and fail the move. */ if (folio_maybe_dma_pinned(src_folio)) { @@ -925,6 +922,9 @@ static int move_present_pte(struct mm_struct *mm, goto out; } + folio_move_anon_rmap(src_folio, dst_vma); + WRITE_ONCE(src_folio->index, linear_page_index(dst_vma, dst_addr)); + orig_dst_pte = mk_pte(&src_folio->page, dst_vma->vm_page_prot); /* Follow mremap() behavior and treat the entry dirty after the move */ orig_dst_pte = pte_mkwrite(pte_mkdirty(orig_dst_pte), dst_vma); |