diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-08-04 00:29:50 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-04 00:34:37 +0300 |
| commit | 35b1b1fd96388d5e3cf179bf36bd8a4153baf4a3 (patch) | |
| tree | 0c0debbc24d6633ec6f8980f94e70f924aeee74e /mm/mempolicy.c | |
| parent | 36e68eadd303dce58018b503186a89bcb27d527e (diff) | |
| parent | 999f6631866e9ea81add935b9c6ebaab0579d259 (diff) | |
| download | linux-35b1b1fd96388d5e3cf179bf36bd8a4153baf4a3.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
Conflicts:
net/dsa/port.c
9945c1fb03a3 ("net: dsa: fix older DSA drivers using phylink")
a88dd7538461 ("net: dsa: remove legacy_pre_march2020 detection")
https://lore.kernel.org/all/20230731102254.2c9868ca@canb.auug.org.au/
net/xdp/xsk.c
3c5b4d69c358 ("net: annotate data-races around sk->sk_mark")
b7f72a30e9ac ("xsk: introduce wrappers and helpers for supporting multi-buffer in Tx path")
https://lore.kernel.org/all/20230731102631.39988412@canb.auug.org.au/
drivers/net/ethernet/broadcom/bnxt/bnxt.c
37b61cda9c16 ("bnxt: don't handle XDP in netpoll")
2b56b3d99241 ("eth: bnxt: handle invalid Tx completions more gracefully")
https://lore.kernel.org/all/20230801101708.1dc7faac@canb.auug.org.au/
Adjacent changes:
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
62da08331f1a ("net/mlx5e: Set proper IPsec source port in L4 selector")
fbd517549c32 ("net/mlx5e: Add function to get IPsec offload namespace")
drivers/net/ethernet/sfc/selftest.c
55c1528f9b97 ("sfc: fix field-spanning memcpy in selftest")
ae9d445cd41f ("sfc: Miscellaneous comment removals")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index edc25195f5bd..c53f8beeb507 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -384,8 +384,10 @@ void mpol_rebind_mm(struct mm_struct *mm, nodemask_t *new) VMA_ITERATOR(vmi, mm, 0); mmap_write_lock(mm); - for_each_vma(vmi, vma) + for_each_vma(vmi, vma) { + vma_start_write(vma); mpol_rebind_policy(vma->vm_policy, new); + } mmap_write_unlock(mm); } @@ -768,6 +770,8 @@ static int vma_replace_policy(struct vm_area_struct *vma, struct mempolicy *old; struct mempolicy *new; + vma_assert_write_locked(vma); + pr_debug("vma %lx-%lx/%lx vm_ops %p vm_file %p set_policy %p\n", vma->vm_start, vma->vm_end, vma->vm_pgoff, vma->vm_ops, vma->vm_file, @@ -1313,6 +1317,14 @@ static long do_mbind(unsigned long start, unsigned long len, if (err) goto mpol_out; + /* + * Lock the VMAs before scanning for pages to migrate, to ensure we don't + * miss a concurrently inserted page. + */ + vma_iter_init(&vmi, mm, start); + for_each_vma_range(vmi, vma, end) + vma_start_write(vma); + ret = queue_pages_range(mm, start, end, nmask, flags | MPOL_MF_INVERT, &pagelist); @@ -1538,6 +1550,7 @@ SYSCALL_DEFINE4(set_mempolicy_home_node, unsigned long, start, unsigned long, le break; } + vma_start_write(vma); new->home_node = home_node; err = mbind_range(&vmi, vma, &prev, start, end, new); mpol_put(new); |