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KVM guest_memfd changes for 7.1

Browse Source 
Don't mark guest_memfd folios as accessed, as guest_memfd doesn't support
 reclaim, the memory is unevictable, and there is no storage to write back to.
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Merge tag 'kvm-x86-gmem-7.1' of https://github.com/kvm-x86/linux into HEAD

KVM guest_memfd changes for 7.1

Don't mark guest_memfd folios as accessed, as guest_memfd doesn't support
reclaim, the memory is unevictable, and there is no storage to write back to.
This commit is contained in:
Paolo Bonzini 2026-04-13 11:50:41 +02:00
commit ed86b06bb3
1 changed files with 2 additions and 3 deletions
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5
virt/kvm/guest_memfd.c
View File

@ -126,14 +126,13 @@ static struct folio *kvm_gmem_get_folio(struct inode *inode, pgoff_t index)
* Fast-path: See if folio is already present in mapping to avoid
* policy_lookup.
*/
folio = __filemap_get_folio(inode->i_mapping, index,
FGP_LOCK | FGP_ACCESSED, 0);
folio = filemap_lock_folio(inode->i_mapping, index);
if (!IS_ERR(folio))
return folio;
policy = mpol_shared_policy_lookup(&GMEM_I(inode)->policy, index);
folio = __filemap_get_folio_mpol(inode->i_mapping, index,
FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
FGP_LOCK | FGP_CREAT,
mapping_gfp_mask(inode->i_mapping), policy);
mpol_cond_put(policy);