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J_mh5CCr_kaStB1naqIO3n8i7hiznyyG1zKW9gNXexo_1756375578 X-Mimecast-Originator: redhat.com Content-Language: en-US X-Headers-End: 1urZWU-00078I-Cs Subject: Re: [f2fs-dev] [PATCH kvm-next V11 4/7] KVM: guest_memfd: Use guest mem inodes instead of anonymous inodes X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: David Hildenbrand via Linux-f2fs-devel Reply-To: David Hildenbrand Cc: jgowans@amazon.com, mhocko@suse.com, jack@suse.cz, kvm@vger.kernel.org, dhavale@google.com, linux-btrfs@vger.kernel.org, aik@amd.com, papaluri@amd.com, kalyazin@amazon.com, peterx@redhat.com, linux-mm@kvack.org, clm@fb.com, ddutile@redhat.com, linux-kselftest@vger.kernel.org, shdhiman@amd.com, gshan@redhat.com, ying.huang@linux.alibaba.com, ira.weiny@intel.com, roypat@amazon.co.uk, matthew.brost@intel.com, linux-coco@lists.linux.dev, zbestahu@gmail.com, lorenzo.stoakes@oracle.com, linux-bcachefs@vger.kernel.org, apopple@nvidia.com, jmorris@namei.org, hch@infradead.org, chao.gao@intel.com, cgzones@googlemail.com, ziy@nvidia.com, rientjes@google.com, yuzhao@google.com, xiang@kernel.org, nikunj@amd.com, gourry@gourry.net, serge@hallyn.com, amit@infradead.org, thomas.lendacky@amd.com, ashish.kalra@amd.com, chao.p.peng@intel.com, yan.y.zhao@intel.com, byungchul@sk.com, michael.day@amd.com, Neeraj.Upadhyay@amd.com, michael.roth@amd.com, bfoster@redhat.com, josef@toxicpanda.com, Liam.Howlett@oracle.com, pvorel@suse.cz, dsterba@suse.com, viro@zeniv.linux.org.uk, jefflexu@linux.alibaba.com, jaegeuk@kernel.org, dan.j.williams@intel.com, surenb@google.com, tabba@google.com, paul@paul-moore.com, joshua.hahnjy@gmail.com, brauner@kernel.org, quic_eberman@quicinc.com, rakie.kim@sk.com, bharata@amd.com, linux-erofs@lists.ozlabs.org, kent.overstreet@linux.dev, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, pankaj.gupta@amd.com, linux-security-module@vger.kernel.org, lihongbo22@huawei.com, linux-fsdevel@vger.kernel.org, vannapurve@google.com, suzuki.poulose@arm.com, rppt@kernel.org, jgg@nvidia.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 28.08.25 00:43, Ackerley Tng wrote: > Shivank Garg writes: > >> >> [...snip...] >> > > I meant to send this to you before this version went out but you were > too quick! > > Here's a new version, Fuad and I reviewed this again internally. The > changes are: > > + Sort linux/pseudo_fs.h after linux/pagemap.h (alphabetical) > + Don't set MNT_NOEXEC on the mount, since SB_I_NOEXEC was already set > on the superblock > + Rename kvm_gmem_inode_make_secure_inode() to kvm_gmem_inode_create() > + Emphasizes that there is a creation in this function > + Remove "secure" from the function name to remove confusion that > there may be a "non-secure" version > + In kvm_gmem_inode_create_getfile()'s error path, return ERR_PTR(err) > directly instead of having a goto > > > From ada9814b216eac129ed44dffd3acf76fce2cc08a Mon Sep 17 00:00:00 2001 > From: Ackerley Tng > Date: Sun, 13 Jul 2025 17:43:35 +0000 > Subject: [PATCH] KVM: guest_memfd: Use guest mem inodes instead of anonymous > inodes > > guest_memfd's inode represents memory the guest_memfd is > providing. guest_memfd's file represents a struct kvm's view of that > memory. > > Using a custom inode allows customization of the inode teardown > process via callbacks. For example, ->evict_inode() allows > customization of the truncation process on file close, and > ->destroy_inode() and ->free_inode() allow customization of the inode > freeing process. > > Customizing the truncation process allows flexibility in management of > guest_memfd memory and customization of the inode freeing process > allows proper cleanup of memory metadata stored on the inode. > > Memory metadata is more appropriately stored on the inode (as opposed > to the file), since the metadata is for the memory and is not unique > to a specific binding and struct kvm. > > Co-developed-by: Fuad Tabba > Signed-off-by: Fuad Tabba > Signed-off-by: Shivank Garg > Signed-off-by: Ackerley Tng Acked-by: David Hildenbrand -- Cheers David / dhildenb _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel