From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CF7379E4; Sun, 27 Aug 2023 13:33:48 +0000 (UTC) Received: from out-247.mta1.migadu.com (out-247.mta1.migadu.com [IPv6:2001:41d0:203:375::f7]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2859419A; Sun, 27 Aug 2023 06:33:44 -0700 (PDT) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1693143223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/SxFJtissRd8EFEKfjvtrzUrKe2UZWHAXBAv8XN+2Ws=; b=eP0/0pozPhJqhF9X0LVypWfPixS8Ogox1mSys0p44e7ItbiSDBlkHW42EuiOoGiIwrzhGw tZ/ULBZZYg3CYueJM7OBSSuL9VrufdTT1Ge7QZSiTjhbDK29Ks9eejLI5UabQHt/7N12hX DZgpFPTC3SJN3d95V92Kgu+jAWVmYA0= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Cc: Dominique Martinet , Pavel Begunkov , Christian Brauner , Alexander Viro , Stefan Roesch , Clay Harris , Dave Chinner , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cachefs@redhat.com, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, linux-nilfs@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, Wanpeng Li Subject: [PATCH 06/11] vfs: add a nowait parameter for touch_atime() Date: Sun, 27 Aug 2023 21:28:30 +0800 Message-Id: <20230827132835.1373581-7-hao.xu@linux.dev> In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net From: Hao Xu Add a nowait boolean parameter for touch_atime() to support nowait semantics. It is true only when io_uring is the initial caller. Signed-off-by: Hao Xu --- fs/cachefiles/namei.c | 2 +- fs/ecryptfs/file.c | 4 ++-- fs/inode.c | 7 ++++--- fs/namei.c | 4 ++-- fs/nfsd/vfs.c | 2 +- fs/overlayfs/file.c | 2 +- fs/overlayfs/inode.c | 2 +- fs/stat.c | 2 +- include/linux/fs.h | 4 ++-- kernel/bpf/inode.c | 4 ++-- net/unix/af_unix.c | 4 ++-- 11 files changed, 19 insertions(+), 18 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index d9d22d0ec38a..7a21bf0e36b8 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -591,7 +591,7 @@ static bool cachefiles_open_file(struct cachefiles_object *object, * used to keep track of culling, and atimes are only updated by read, * write and readdir but not lookup or open). */ - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); dput(dentry); return true; diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ce0a3c5ed0ca..3db7006cc440 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -39,7 +39,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, rc = generic_file_read_iter(iocb, to); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(file->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } @@ -64,7 +64,7 @@ static ssize_t ecryptfs_splice_read_update_atime(struct file *in, loff_t *ppos, rc = filemap_splice_read(in, ppos, pipe, len, flags); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(in->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..e83b836f2d09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1961,17 +1961,17 @@ bool atime_needs_update(const struct path *path, struct inode *inode) return true; } -void touch_atime(const struct path *path) +int touch_atime(const struct path *path, bool nowait) { struct vfsmount *mnt = path->mnt; struct inode *inode = d_inode(path->dentry); struct timespec64 now; if (!atime_needs_update(path, inode)) - return; + return 0; if (!sb_start_write_trylock(inode->i_sb)) - return; + return 0; if (__mnt_want_write(mnt) != 0) goto skip_update; @@ -1989,6 +1989,7 @@ void touch_atime(const struct path *path) __mnt_drop_write(mnt); skip_update: sb_end_write(inode->i_sb); + return 0; } EXPORT_SYMBOL(touch_atime); diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..35731d405730 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1776,12 +1776,12 @@ static const char *pick_link(struct nameidata *nd, struct path *link, return ERR_PTR(-ELOOP); if (!(nd->flags & LOOKUP_RCU)) { - touch_atime(&last->link); + touch_atime(&last->link, false); cond_resched(); } else if (atime_needs_update(&last->link, inode)) { if (!try_to_unlazy(nd)) return ERR_PTR(-ECHILD); - touch_atime(&last->link); + touch_atime(&last->link, false); } error = security_inode_follow_link(link->dentry, inode, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..3179e7b5d209 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1569,7 +1569,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) if (unlikely(!d_is_symlink(path.dentry))) return nfserr_inval; - touch_atime(&path); + touch_atime(&path, false); link = vfs_get_link(path.dentry, &done); if (IS_ERR(link)) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..6ff466ef98ea 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -255,7 +255,7 @@ static void ovl_file_accessed(struct file *file) inode->i_ctime = upperinode->i_ctime; } - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } static rwf_t ovl_iocb_to_rwf(int ifl) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..66e03025e748 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -703,7 +703,7 @@ int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags) }; if (upperpath.dentry) { - touch_atime(&upperpath); + touch_atime(&upperpath, false); inode->i_atime = d_inode(upperpath.dentry)->i_atime; } } diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..713773e61110 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -485,7 +485,7 @@ static int do_readlinkat(int dfd, const char __user *pathname, if (d_is_symlink(path.dentry) || inode->i_op->readlink) { error = security_inode_readlink(path.dentry); if (!error) { - touch_atime(&path); + touch_atime(&path, false); error = vfs_readlink(path.dentry, buf, bufsiz); } } diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..ba54879089ac 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2201,13 +2201,13 @@ enum file_time_flags { }; extern bool atime_needs_update(const struct path *, struct inode *); -extern void touch_atime(const struct path *); +extern int touch_atime(const struct path *path, bool nowait); int inode_update_time(struct inode *inode, struct timespec64 *time, int flags); static inline void file_accessed(struct file *file) { if (!(file->f_flags & O_NOATIME)) - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } extern int file_modified(struct file *file); diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 4174f76133df..bc020b45d5c8 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -517,7 +517,7 @@ static void *bpf_obj_do_get(int path_fd, const char __user *pathname, raw = bpf_any_get(inode->i_private, *type); if (!IS_ERR(raw)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return raw; @@ -591,7 +591,7 @@ struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type typ return ERR_PTR(ret); prog = __get_prog_inode(d_backing_inode(path.dentry), type); if (!IS_ERR(prog)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return prog; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 123b35ddfd71..5868e4e47320 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1084,7 +1084,7 @@ static struct sock *unix_find_bsd(struct sockaddr_un *sunaddr, int addr_len, err = -EPROTOTYPE; if (sk->sk_type == type) - touch_atime(&path); + touch_atime(&path, false); else goto sock_put; @@ -1114,7 +1114,7 @@ static struct sock *unix_find_abstract(struct net *net, dentry = unix_sk(sk)->path.dentry; if (dentry) - touch_atime(&unix_sk(sk)->path); + touch_atime(&unix_sk(sk)->path, false); return sk; } -- 2.25.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7F925C83F30 for ; 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From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Date: Sun, 27 Aug 2023 21:28:30 +0800 Message-Id: <20230827132835.1373581-7-hao.xu@linux.dev> In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 X-Mailman-Approved-At: Tue, 29 Aug 2023 08:41:07 +0000 Subject: [Cluster-devel] [PATCH 06/11] vfs: add a nowait parameter for touch_atime() X-BeenThere: cluster-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: "\[Cluster devel\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wanpeng Li , "Darrick J . Wong" , Dominique Martinet , Dave Chinner , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Stefan Roesch , Clay Harris , linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, codalist@coda.cs.cmu.edu, cluster-devel@redhat.com, linux-cachefs@redhat.com, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-block@vger.kernel.org, Alexander Viro , Christian Brauner , netdev@vger.kernel.org, samba-technical@lists.samba.org, linux-unionfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mtd@lists.infradead.org, bpf@vger.kernel.org, Pavel Begunkov , linux-btrfs@vger.kernel.org Errors-To: cluster-devel-bounces@redhat.com Sender: "Cluster-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: linux.dev Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="US-ASCII"; x-default=true From: Hao Xu Add a nowait boolean parameter for touch_atime() to support nowait semantics. It is true only when io_uring is the initial caller. Signed-off-by: Hao Xu --- fs/cachefiles/namei.c | 2 +- fs/ecryptfs/file.c | 4 ++-- fs/inode.c | 7 ++++--- fs/namei.c | 4 ++-- fs/nfsd/vfs.c | 2 +- fs/overlayfs/file.c | 2 +- fs/overlayfs/inode.c | 2 +- fs/stat.c | 2 +- include/linux/fs.h | 4 ++-- kernel/bpf/inode.c | 4 ++-- net/unix/af_unix.c | 4 ++-- 11 files changed, 19 insertions(+), 18 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index d9d22d0ec38a..7a21bf0e36b8 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -591,7 +591,7 @@ static bool cachefiles_open_file(struct cachefiles_obje= ct *object, =09 * used to keep track of culling, and atimes are only updated by read, =09 * write and readdir but not lookup or open). =09 */ -=09touch_atime(&file->f_path); +=09touch_atime(&file->f_path, false); =09dput(dentry); =09return true; =20 diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ce0a3c5ed0ca..3db7006cc440 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -39,7 +39,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *i= ocb, =09rc =3D generic_file_read_iter(iocb, to); =09if (rc >=3D 0) { =09=09path =3D ecryptfs_dentry_to_lower_path(file->f_path.dentry); -=09=09touch_atime(path); +=09=09touch_atime(path, false); =09} =09return rc; } @@ -64,7 +64,7 @@ static ssize_t ecryptfs_splice_read_update_atime(struct f= ile *in, loff_t *ppos, =09rc =3D filemap_splice_read(in, ppos, pipe, len, flags); =09if (rc >=3D 0) { =09=09path =3D ecryptfs_dentry_to_lower_path(in->f_path.dentry); -=09=09touch_atime(path); +=09=09touch_atime(path, false); =09} =09return rc; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..e83b836f2d09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1961,17 +1961,17 @@ bool atime_needs_update(const struct path *path, st= ruct inode *inode) =09return true; } =20 -void touch_atime(const struct path *path) +int touch_atime(const struct path *path, bool nowait) { =09struct vfsmount *mnt =3D path->mnt; =09struct inode *inode =3D d_inode(path->dentry); =09struct timespec64 now; =20 =09if (!atime_needs_update(path, inode)) -=09=09return; +=09=09return 0; =20 =09if (!sb_start_write_trylock(inode->i_sb)) -=09=09return; +=09=09return 0; =20 =09if (__mnt_want_write(mnt) !=3D 0) =09=09goto skip_update; @@ -1989,6 +1989,7 @@ void touch_atime(const struct path *path) =09__mnt_drop_write(mnt); skip_update: =09sb_end_write(inode->i_sb); +=09return 0; } EXPORT_SYMBOL(touch_atime); =20 diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..35731d405730 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1776,12 +1776,12 @@ static const char *pick_link(struct nameidata *nd, = struct path *link, =09=09return ERR_PTR(-ELOOP); =20 =09if (!(nd->flags & LOOKUP_RCU)) { -=09=09touch_atime(&last->link); +=09=09touch_atime(&last->link, false); =09=09cond_resched(); =09} else if (atime_needs_update(&last->link, inode)) { =09=09if (!try_to_unlazy(nd)) =09=09=09return ERR_PTR(-ECHILD); -=09=09touch_atime(&last->link); +=09=09touch_atime(&last->link, false); =09} =20 =09error =3D security_inode_follow_link(link->dentry, inode, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..3179e7b5d209 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1569,7 +1569,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *= fhp, char *buf, int *lenp) =09if (unlikely(!d_is_symlink(path.dentry))) =09=09return nfserr_inval; =20 -=09touch_atime(&path); +=09touch_atime(&path, false); =20 =09link =3D vfs_get_link(path.dentry, &done); =09if (IS_ERR(link)) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..6ff466ef98ea 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -255,7 +255,7 @@ static void ovl_file_accessed(struct file *file) =09=09inode->i_ctime =3D upperinode->i_ctime; =09} =20 -=09touch_atime(&file->f_path); +=09touch_atime(&file->f_path, false); } =20 static rwf_t ovl_iocb_to_rwf(int ifl) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..66e03025e748 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -703,7 +703,7 @@ int ovl_update_time(struct inode *inode, struct timespe= c64 *ts, int flags) =09=09}; =20 =09=09if (upperpath.dentry) { -=09=09=09touch_atime(&upperpath); +=09=09=09touch_atime(&upperpath, false); =09=09=09inode->i_atime =3D d_inode(upperpath.dentry)->i_atime; =09=09} =09} diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..713773e61110 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -485,7 +485,7 @@ static int do_readlinkat(int dfd, const char __user *pa= thname, =09=09if (d_is_symlink(path.dentry) || inode->i_op->readlink) { =09=09=09error =3D security_inode_readlink(path.dentry); =09=09=09if (!error) { -=09=09=09=09touch_atime(&path); +=09=09=09=09touch_atime(&path, false); =09=09=09=09error =3D vfs_readlink(path.dentry, buf, bufsiz); =09=09=09} =09=09} diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..ba54879089ac 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2201,13 +2201,13 @@ enum file_time_flags { }; =20 extern bool atime_needs_update(const struct path *, struct inode *); -extern void touch_atime(const struct path *); +extern int touch_atime(const struct path *path, bool nowait); int inode_update_time(struct inode *inode, struct timespec64 *time, int fl= ags); =20 static inline void file_accessed(struct file *file) { =09if (!(file->f_flags & O_NOATIME)) -=09=09touch_atime(&file->f_path); +=09=09touch_atime(&file->f_path, false); } =20 extern int file_modified(struct file *file); diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 4174f76133df..bc020b45d5c8 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -517,7 +517,7 @@ static void *bpf_obj_do_get(int path_fd, const char __u= ser *pathname, =20 =09raw =3D bpf_any_get(inode->i_private, *type); =09if (!IS_ERR(raw)) -=09=09touch_atime(&path); +=09=09touch_atime(&path, false); =20 =09path_put(&path); =09return raw; @@ -591,7 +591,7 @@ struct bpf_prog *bpf_prog_get_type_path(const char *nam= e, enum bpf_prog_type typ =09=09return ERR_PTR(ret); =09prog =3D __get_prog_inode(d_backing_inode(path.dentry), type); =09if (!IS_ERR(prog)) -=09=09touch_atime(&path); +=09=09touch_atime(&path, false); =09path_put(&path); =09return prog; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 123b35ddfd71..5868e4e47320 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1084,7 +1084,7 @@ static struct sock *unix_find_bsd(struct sockaddr_un = *sunaddr, int addr_len, =20 =09err =3D -EPROTOTYPE; =09if (sk->sk_type =3D=3D type) -=09=09touch_atime(&path); +=09=09touch_atime(&path, false); =09else =09=09goto sock_put; =20 @@ -1114,7 +1114,7 @@ static struct sock *unix_find_abstract(struct net *ne= t, =20 =09dentry =3D unix_sk(sk)->path.dentry; =09if (dentry) -=09=09touch_atime(&unix_sk(sk)->path); 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1693143223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/SxFJtissRd8EFEKfjvtrzUrKe2UZWHAXBAv8XN+2Ws=; b=eP0/0pozPhJqhF9X0LVypWfPixS8Ogox1mSys0p44e7ItbiSDBlkHW42EuiOoGiIwrzhGw tZ/ULBZZYg3CYueJM7OBSSuL9VrufdTT1Ge7QZSiTjhbDK29Ks9eejLI5UabQHt/7N12hX DZgpFPTC3SJN3d95V92Kgu+jAWVmYA0= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Date: Sun, 27 Aug 2023 21:28:30 +0800 Message-Id: <20230827132835.1373581-7-hao.xu@linux.dev> In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Headers-End: 1qaFtl-00H3ro-RF Subject: [f2fs-dev] [PATCH 06/11] vfs: add a nowait parameter for touch_atime() 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: , Cc: Wanpeng Li , "Darrick J . Wong" , Dominique Martinet , Dave Chinner , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Stefan Roesch , Clay Harris , linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, codalist@coda.cs.cmu.edu, cluster-devel@redhat.com, linux-cachefs@redhat.com, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-block@vger.kernel.org, Alexander Viro , Christian Brauner , netdev@vger.kernel.org, samba-technical@lists.samba.org, linux-unionfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mtd@lists.infradead.org, bpf@vger.kernel.org, Pavel Begunkov , linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Hao Xu Add a nowait boolean parameter for touch_atime() to support nowait semantics. It is true only when io_uring is the initial caller. Signed-off-by: Hao Xu --- fs/cachefiles/namei.c | 2 +- fs/ecryptfs/file.c | 4 ++-- fs/inode.c | 7 ++++--- fs/namei.c | 4 ++-- fs/nfsd/vfs.c | 2 +- fs/overlayfs/file.c | 2 +- fs/overlayfs/inode.c | 2 +- fs/stat.c | 2 +- include/linux/fs.h | 4 ++-- kernel/bpf/inode.c | 4 ++-- net/unix/af_unix.c | 4 ++-- 11 files changed, 19 insertions(+), 18 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index d9d22d0ec38a..7a21bf0e36b8 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -591,7 +591,7 @@ static bool cachefiles_open_file(struct cachefiles_object *object, * used to keep track of culling, and atimes are only updated by read, * write and readdir but not lookup or open). */ - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); dput(dentry); return true; diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ce0a3c5ed0ca..3db7006cc440 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -39,7 +39,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, rc = generic_file_read_iter(iocb, to); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(file->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } @@ -64,7 +64,7 @@ static ssize_t ecryptfs_splice_read_update_atime(struct file *in, loff_t *ppos, rc = filemap_splice_read(in, ppos, pipe, len, flags); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(in->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..e83b836f2d09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1961,17 +1961,17 @@ bool atime_needs_update(const struct path *path, struct inode *inode) return true; } -void touch_atime(const struct path *path) +int touch_atime(const struct path *path, bool nowait) { struct vfsmount *mnt = path->mnt; struct inode *inode = d_inode(path->dentry); struct timespec64 now; if (!atime_needs_update(path, inode)) - return; + return 0; if (!sb_start_write_trylock(inode->i_sb)) - return; + return 0; if (__mnt_want_write(mnt) != 0) goto skip_update; @@ -1989,6 +1989,7 @@ void touch_atime(const struct path *path) __mnt_drop_write(mnt); skip_update: sb_end_write(inode->i_sb); + return 0; } EXPORT_SYMBOL(touch_atime); diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..35731d405730 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1776,12 +1776,12 @@ static const char *pick_link(struct nameidata *nd, struct path *link, return ERR_PTR(-ELOOP); if (!(nd->flags & LOOKUP_RCU)) { - touch_atime(&last->link); + touch_atime(&last->link, false); cond_resched(); } else if (atime_needs_update(&last->link, inode)) { if (!try_to_unlazy(nd)) return ERR_PTR(-ECHILD); - touch_atime(&last->link); + touch_atime(&last->link, false); } error = security_inode_follow_link(link->dentry, inode, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..3179e7b5d209 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1569,7 +1569,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) if (unlikely(!d_is_symlink(path.dentry))) return nfserr_inval; - touch_atime(&path); + touch_atime(&path, false); link = vfs_get_link(path.dentry, &done); if (IS_ERR(link)) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..6ff466ef98ea 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -255,7 +255,7 @@ static void ovl_file_accessed(struct file *file) inode->i_ctime = upperinode->i_ctime; } - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } static rwf_t ovl_iocb_to_rwf(int ifl) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..66e03025e748 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -703,7 +703,7 @@ int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags) }; if (upperpath.dentry) { - touch_atime(&upperpath); + touch_atime(&upperpath, false); inode->i_atime = d_inode(upperpath.dentry)->i_atime; } } diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..713773e61110 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -485,7 +485,7 @@ static int do_readlinkat(int dfd, const char __user *pathname, if (d_is_symlink(path.dentry) || inode->i_op->readlink) { error = security_inode_readlink(path.dentry); if (!error) { - touch_atime(&path); + touch_atime(&path, false); error = vfs_readlink(path.dentry, buf, bufsiz); } } diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..ba54879089ac 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2201,13 +2201,13 @@ enum file_time_flags { }; extern bool atime_needs_update(const struct path *, struct inode *); -extern void touch_atime(const struct path *); +extern int touch_atime(const struct path *path, bool nowait); int inode_update_time(struct inode *inode, struct timespec64 *time, int flags); static inline void file_accessed(struct file *file) { if (!(file->f_flags & O_NOATIME)) - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } extern int file_modified(struct file *file); diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 4174f76133df..bc020b45d5c8 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -517,7 +517,7 @@ static void *bpf_obj_do_get(int path_fd, const char __user *pathname, raw = bpf_any_get(inode->i_private, *type); if (!IS_ERR(raw)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return raw; @@ -591,7 +591,7 @@ struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type typ return ERR_PTR(ret); prog = __get_prog_inode(d_backing_inode(path.dentry), type); if (!IS_ERR(prog)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return prog; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 123b35ddfd71..5868e4e47320 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1084,7 +1084,7 @@ static struct sock *unix_find_bsd(struct sockaddr_un *sunaddr, int addr_len, err = -EPROTOTYPE; if (sk->sk_type == type) - touch_atime(&path); + touch_atime(&path, false); else goto sock_put; @@ -1114,7 +1114,7 @@ static struct sock *unix_find_abstract(struct net *net, dentry = unix_sk(sk)->path.dentry; if (dentry) - touch_atime(&unix_sk(sk)->path); + touch_atime(&unix_sk(sk)->path, false); return sk; } -- 2.25.1 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hao Xu Subject: [PATCH 06/11] vfs: add a nowait parameter for touch_atime() Date: Sun, 27 Aug 2023 21:28:30 +0800 Message-ID: <20230827132835.1373581-7-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> Mime-Version: 1.0 Content-Type: text/plain; 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bh=/SxFJtissRd8EFEKfjvtrzUrKe2UZWHAXBAv8XN+2Ws=; b=aLlVSIYFDyGXn0nrH3NuAvEZKR 6Ci9K8TOhZGKBiI5+I5yPpaDcEdH17FefQTQeVCxorLiZGp1QVwslxpqJA+eNfBdvCM9oVyQDqjvF nY1x5FP0VgbE1mJraH+J9u8SQNG5R8FoLLtPU8Zb0BoMZEn72g6Z/AG7pRgw14WdPXAs=; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1693143223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/SxFJtissRd8EFEKfjvtrzUrKe2UZWHAXBAv8XN+2Ws=; b=eP0/0pozPhJqhF9X0LVypWfPixS8Ogox1mSys0p44e7ItbiSDBlkHW42EuiOoGiIwrzhGw tZ/ULBZZYg3CYueJM7OBSSuL9VrufdTT1Ge7QZSiTjhbDK29Ks9eejLI5UabQHt/7N12hX DZgpFPTC3SJN3d95V92Kgu+jAWVmYA0= In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net To: io-uring@vger.kernel.org, Jens Axboe Cc: Wanpeng Li , "Darrick J . Wong" , Dominique Martinet , Dave Chinner , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Stefan Roesch , Clay Harris , linux-s390@vger.kernel.org, linux-nilfs@vger.kernel.org, codalist@coda.cs.cmu.edu, cluster-devel@redhat.com, linux-cachefs@redhat.com, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-block@vger.kernel.org, Alexander Viro , Christian Brauner , netdev@vger.kernel.org, samba-technical@lists.samba.org, linux-unionfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mtd@lists.infradead.org, bpf@vger.kernel.o From: Hao Xu Add a nowait boolean parameter for touch_atime() to support nowait semantics. It is true only when io_uring is the initial caller. Signed-off-by: Hao Xu --- fs/cachefiles/namei.c | 2 +- fs/ecryptfs/file.c | 4 ++-- fs/inode.c | 7 ++++--- fs/namei.c | 4 ++-- fs/nfsd/vfs.c | 2 +- fs/overlayfs/file.c | 2 +- fs/overlayfs/inode.c | 2 +- fs/stat.c | 2 +- include/linux/fs.h | 4 ++-- kernel/bpf/inode.c | 4 ++-- net/unix/af_unix.c | 4 ++-- 11 files changed, 19 insertions(+), 18 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index d9d22d0ec38a..7a21bf0e36b8 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -591,7 +591,7 @@ static bool cachefiles_open_file(struct cachefiles_object *object, * used to keep track of culling, and atimes are only updated by read, * write and readdir but not lookup or open). */ - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); dput(dentry); return true; diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ce0a3c5ed0ca..3db7006cc440 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -39,7 +39,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, rc = generic_file_read_iter(iocb, to); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(file->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } @@ -64,7 +64,7 @@ static ssize_t ecryptfs_splice_read_update_atime(struct file *in, loff_t *ppos, rc = filemap_splice_read(in, ppos, pipe, len, flags); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(in->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..e83b836f2d09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1961,17 +1961,17 @@ bool atime_needs_update(const struct path *path, struct inode *inode) return true; } -void touch_atime(const struct path *path) +int touch_atime(const struct path *path, bool nowait) { struct vfsmount *mnt = path->mnt; struct inode *inode = d_inode(path->dentry); struct timespec64 now; if (!atime_needs_update(path, inode)) - return; + return 0; if (!sb_start_write_trylock(inode->i_sb)) - return; + return 0; if (__mnt_want_write(mnt) != 0) goto skip_update; @@ -1989,6 +1989,7 @@ void touch_atime(const struct path *path) __mnt_drop_write(mnt); skip_update: sb_end_write(inode->i_sb); + return 0; } EXPORT_SYMBOL(touch_atime); diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..35731d405730 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1776,12 +1776,12 @@ static const char *pick_link(struct nameidata *nd, struct path *link, return ERR_PTR(-ELOOP); if (!(nd->flags & LOOKUP_RCU)) { - touch_atime(&last->link); + touch_atime(&last->link, false); cond_resched(); } else if (atime_needs_update(&last->link, inode)) { if (!try_to_unlazy(nd)) return ERR_PTR(-ECHILD); - touch_atime(&last->link); + touch_atime(&last->link, false); } error = security_inode_follow_link(link->dentry, inode, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..3179e7b5d209 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1569,7 +1569,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) if (unlikely(!d_is_symlink(path.dentry))) return nfserr_inval; - touch_atime(&path); + touch_atime(&path, false); link = vfs_get_link(path.dentry, &done); if (IS_ERR(link)) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..6ff466ef98ea 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -255,7 +255,7 @@ static void ovl_file_accessed(struct file *file) inode->i_ctime = upperinode->i_ctime; } - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } static rwf_t ovl_iocb_to_rwf(int ifl) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..66e03025e748 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -703,7 +703,7 @@ int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags) }; if (upperpath.dentry) { - touch_atime(&upperpath); + touch_atime(&upperpath, false); inode->i_atime = d_inode(upperpath.dentry)->i_atime; } } diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..713773e61110 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -485,7 +485,7 @@ static int do_readlinkat(int dfd, const char __user *pathname, if (d_is_symlink(path.dentry) || inode->i_op->readlink) { error = security_inode_readlink(path.dentry); if (!error) { - touch_atime(&path); + touch_atime(&path, false); error = vfs_readlink(path.dentry, buf, bufsiz); } } diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..ba54879089ac 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2201,13 +2201,13 @@ enum file_time_flags { }; extern bool atime_needs_update(const struct path *, struct inode *); -extern void touch_atime(const struct path *); +extern int touch_atime(const struct path *path, bool nowait); int inode_update_time(struct inode *inode, struct timespec64 *time, int flags); static inline void file_accessed(struct file *file) { if (!(file->f_flags & O_NOATIME)) - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } extern int file_modified(struct file *file); diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 4174f76133df..bc020b45d5c8 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -517,7 +517,7 @@ static void *bpf_obj_do_get(int path_fd, const char __user *pathname, raw = bpf_any_get(inode->i_private, *type); if (!IS_ERR(raw)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return raw; @@ -591,7 +591,7 @@ struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type typ return ERR_PTR(ret); prog = __get_prog_inode(d_backing_inode(path.dentry), type); if (!IS_ERR(prog)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return prog; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 123b35ddfd71..5868e4e47320 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1084,7 +1084,7 @@ static struct sock *unix_find_bsd(struct sockaddr_un *sunaddr, int addr_len, err = -EPROTOTYPE; if (sk->sk_type == type) - touch_atime(&path); + touch_atime(&path, false); else goto sock_put; @@ -1114,7 +1114,7 @@ static struct sock *unix_find_abstract(struct net *net, dentry = unix_sk(sk)->path.dentry; if (dentry) - touch_atime(&unix_sk(sk)->path); + touch_atime(&unix_sk(sk)->path, false); return sk; } -- 2.25.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CDA41C83F01 for ; 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1693143223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/SxFJtissRd8EFEKfjvtrzUrKe2UZWHAXBAv8XN+2Ws=; b=eP0/0pozPhJqhF9X0LVypWfPixS8Ogox1mSys0p44e7ItbiSDBlkHW42EuiOoGiIwrzhGw tZ/ULBZZYg3CYueJM7OBSSuL9VrufdTT1Ge7QZSiTjhbDK29Ks9eejLI5UabQHt/7N12hX DZgpFPTC3SJN3d95V92Kgu+jAWVmYA0= From: Hao Xu To: io-uring@vger.kernel.org, Jens Axboe Cc: Dominique Martinet , Pavel Begunkov , Christian Brauner , Alexander Viro , Stefan Roesch , Clay Harris , Dave Chinner , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cachefs@redhat.com, ecryptfs@vger.kernel.org, linux-nfs@vger.kernel.org, linux-unionfs@vger.kernel.org, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-btrfs@vger.kernel.org, codalist@coda.cs.cmu.edu, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-mm@kvack.org, linux-nilfs@vger.kernel.org, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, Wanpeng Li Subject: [PATCH 06/11] vfs: add a nowait parameter for touch_atime() Date: Sun, 27 Aug 2023 21:28:30 +0800 Message-Id: <20230827132835.1373581-7-hao.xu@linux.dev> In-Reply-To: <20230827132835.1373581-1-hao.xu@linux.dev> References: <20230827132835.1373581-1-hao.xu@linux.dev> MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230827_063347_056968_FD5D7C73 X-CRM114-Status: GOOD ( 14.89 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org From: Hao Xu Add a nowait boolean parameter for touch_atime() to support nowait semantics. It is true only when io_uring is the initial caller. Signed-off-by: Hao Xu --- fs/cachefiles/namei.c | 2 +- fs/ecryptfs/file.c | 4 ++-- fs/inode.c | 7 ++++--- fs/namei.c | 4 ++-- fs/nfsd/vfs.c | 2 +- fs/overlayfs/file.c | 2 +- fs/overlayfs/inode.c | 2 +- fs/stat.c | 2 +- include/linux/fs.h | 4 ++-- kernel/bpf/inode.c | 4 ++-- net/unix/af_unix.c | 4 ++-- 11 files changed, 19 insertions(+), 18 deletions(-) diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index d9d22d0ec38a..7a21bf0e36b8 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -591,7 +591,7 @@ static bool cachefiles_open_file(struct cachefiles_object *object, * used to keep track of culling, and atimes are only updated by read, * write and readdir but not lookup or open). */ - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); dput(dentry); return true; diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index ce0a3c5ed0ca..3db7006cc440 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -39,7 +39,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb, rc = generic_file_read_iter(iocb, to); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(file->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } @@ -64,7 +64,7 @@ static ssize_t ecryptfs_splice_read_update_atime(struct file *in, loff_t *ppos, rc = filemap_splice_read(in, ppos, pipe, len, flags); if (rc >= 0) { path = ecryptfs_dentry_to_lower_path(in->f_path.dentry); - touch_atime(path); + touch_atime(path, false); } return rc; } diff --git a/fs/inode.c b/fs/inode.c index 8fefb69e1f84..e83b836f2d09 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -1961,17 +1961,17 @@ bool atime_needs_update(const struct path *path, struct inode *inode) return true; } -void touch_atime(const struct path *path) +int touch_atime(const struct path *path, bool nowait) { struct vfsmount *mnt = path->mnt; struct inode *inode = d_inode(path->dentry); struct timespec64 now; if (!atime_needs_update(path, inode)) - return; + return 0; if (!sb_start_write_trylock(inode->i_sb)) - return; + return 0; if (__mnt_want_write(mnt) != 0) goto skip_update; @@ -1989,6 +1989,7 @@ void touch_atime(const struct path *path) __mnt_drop_write(mnt); skip_update: sb_end_write(inode->i_sb); + return 0; } EXPORT_SYMBOL(touch_atime); diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..35731d405730 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1776,12 +1776,12 @@ static const char *pick_link(struct nameidata *nd, struct path *link, return ERR_PTR(-ELOOP); if (!(nd->flags & LOOKUP_RCU)) { - touch_atime(&last->link); + touch_atime(&last->link, false); cond_resched(); } else if (atime_needs_update(&last->link, inode)) { if (!try_to_unlazy(nd)) return ERR_PTR(-ECHILD); - touch_atime(&last->link); + touch_atime(&last->link, false); } error = security_inode_follow_link(link->dentry, inode, diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 8a2321d19194..3179e7b5d209 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1569,7 +1569,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) if (unlikely(!d_is_symlink(path.dentry))) return nfserr_inval; - touch_atime(&path); + touch_atime(&path, false); link = vfs_get_link(path.dentry, &done); if (IS_ERR(link)) diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c index 21245b00722a..6ff466ef98ea 100644 --- a/fs/overlayfs/file.c +++ b/fs/overlayfs/file.c @@ -255,7 +255,7 @@ static void ovl_file_accessed(struct file *file) inode->i_ctime = upperinode->i_ctime; } - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } static rwf_t ovl_iocb_to_rwf(int ifl) diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index a63e57447be9..66e03025e748 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -703,7 +703,7 @@ int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags) }; if (upperpath.dentry) { - touch_atime(&upperpath); + touch_atime(&upperpath, false); inode->i_atime = d_inode(upperpath.dentry)->i_atime; } } diff --git a/fs/stat.c b/fs/stat.c index 7c238da22ef0..713773e61110 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -485,7 +485,7 @@ static int do_readlinkat(int dfd, const char __user *pathname, if (d_is_symlink(path.dentry) || inode->i_op->readlink) { error = security_inode_readlink(path.dentry); if (!error) { - touch_atime(&path); + touch_atime(&path, false); error = vfs_readlink(path.dentry, buf, bufsiz); } } diff --git a/include/linux/fs.h b/include/linux/fs.h index f3e315e8efdd..ba54879089ac 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2201,13 +2201,13 @@ enum file_time_flags { }; extern bool atime_needs_update(const struct path *, struct inode *); -extern void touch_atime(const struct path *); +extern int touch_atime(const struct path *path, bool nowait); int inode_update_time(struct inode *inode, struct timespec64 *time, int flags); static inline void file_accessed(struct file *file) { if (!(file->f_flags & O_NOATIME)) - touch_atime(&file->f_path); + touch_atime(&file->f_path, false); } extern int file_modified(struct file *file); diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 4174f76133df..bc020b45d5c8 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -517,7 +517,7 @@ static void *bpf_obj_do_get(int path_fd, const char __user *pathname, raw = bpf_any_get(inode->i_private, *type); if (!IS_ERR(raw)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return raw; @@ -591,7 +591,7 @@ struct bpf_prog *bpf_prog_get_type_path(const char *name, enum bpf_prog_type typ return ERR_PTR(ret); prog = __get_prog_inode(d_backing_inode(path.dentry), type); if (!IS_ERR(prog)) - touch_atime(&path); + touch_atime(&path, false); path_put(&path); return prog; } diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 123b35ddfd71..5868e4e47320 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1084,7 +1084,7 @@ static struct sock *unix_find_bsd(struct sockaddr_un *sunaddr, int addr_len, err = -EPROTOTYPE; if (sk->sk_type == type) - touch_atime(&path); + touch_atime(&path, false); else goto sock_put; @@ -1114,7 +1114,7 @@ static struct sock *unix_find_abstract(struct net *net, dentry = unix_sk(sk)->path.dentry; if (dentry) - touch_atime(&unix_sk(sk)->path); + touch_atime(&unix_sk(sk)->path, false); return sk; } -- 2.25.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/