netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/9p/v9fs_vfs.h",
                        "fs/9p/vfs_inode.c",
                        "fs/9p/vfs_inode_dotl.c",
                        "fs/afs/file.c",
                        "fs/afs/inode.c",
                        "fs/afs/internal.h",
                        "fs/afs/write.c",
                        "fs/netfs/buffered_read.c",
                        "fs/netfs/buffered_write.c",
                        "fs/netfs/direct_write.c",
                        "fs/netfs/misc.c",
                        "fs/netfs/write_collect.c",
                        "fs/smb/client/cifsfs.c",
                        "fs/smb/client/cifssmb.c",
                        "fs/smb/client/file.c",
                        "fs/smb/client/inode.c",
                        "fs/smb/client/readdir.c",
                        "fs/smb/client/smb2ops.c",
                        "fs/smb/client/smb2pdu.c",
                        "include/linux/netfs.h"
                    ],
                    "versions": [
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                            "version": "4058f742105ecfcbdf99e1139e6c1f74fb8e6db9",
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                            "status": "affected",
                            "versionType": "git"
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                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/9p/v9fs_vfs.h",
                        "fs/9p/vfs_inode.c",
                        "fs/9p/vfs_inode_dotl.c",
                        "fs/afs/file.c",
                        "fs/afs/inode.c",
                        "fs/afs/internal.h",
                        "fs/afs/write.c",
                        "fs/netfs/buffered_read.c",
                        "fs/netfs/buffered_write.c",
                        "fs/netfs/direct_write.c",
                        "fs/netfs/misc.c",
                        "fs/netfs/write_collect.c",
                        "fs/smb/client/cifsfs.c",
                        "fs/smb/client/cifssmb.c",
                        "fs/smb/client/file.c",
                        "fs/smb/client/inode.c",
                        "fs/smb/client/readdir.c",
                        "fs/smb/client/smb2ops.c",
                        "fs/smb/client/smb2pdu.c",
                        "include/linux/netfs.h"
                    ],
                    "versions": [
                        {
                            "version": "5.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }