From patchwork Tue Jun 4 11:26:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Lingfeng X-Patchwork-Id: 13685079 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) (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 DBB10145335; Tue, 4 Jun 2024 11:26:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717500402; cv=none; b=FlRkGPGbTHt7bCrlImE0sXr7aVsEiF0NmrfmkqQSgQ9ltd5XTEn/7c4vbr24BTX8aOXwWzbDSh9W/rcSA4rpKzmnf39bZyAuk0J97v9IpVjf8lDy36Z8dmJXtO1R+LhT00Xi9ItfrPrCReLQsnGk9jBwXFbzay9Jo1iQaR6kDSs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717500402; c=relaxed/simple; bh=DPAslzLeTdPCHR5P+eciFyRSr7VJxB5VKsaBTDYBaGE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=FV2IzyiFHGoqBy+9eWmjftd7pc1r93HSCmHZ/MhSdb4ybiFSbha4CyUmSo3RVM1QRUlFBlyVUaYkBemBAMarIK5PEpt45BpMIdui/VqGK76X0sxD2dkCnN92yA6d8siS9BBHpaTWWVXlrOSalx7V5q0r2R1b4AvH2Y4/19UPe4g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4VtpFf0q4Hz4f3lXJ; Tue, 4 Jun 2024 19:26:30 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id 5ED171A0C64; Tue, 4 Jun 2024 19:26:36 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgAXKwTp+V5mJkItOg--.61165S5; Tue, 04 Jun 2024 19:26:35 +0800 (CST) From: Li Lingfeng To: dhowells@redhat.com, marc.dionne@auristor.com, raven@themaw.net, gregkh@linuxfoundation.org, rafael@kernel.org, viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, miklos@szeredi.hu, trond.myklebust@hammerspace.com, anna@kernel.org, sfrench@samba.org, pc@manguebit.com, ronniesahlberg@gmail.com, sprasad@microsoft.com, tom@talpey.com, bharathsm@microsoft.com, djwong@kernel.org Cc: linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, autofs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, yi.zhang@huawei.com, yangerkun@huawei.com, zhangxiaoxu5@huawei.com, lilingfeng@huaweicloud.com, lilingfeng3@huawei.com Subject: [PATCH RFC 1/2] fs: pass sb_flags to submount Date: Tue, 4 Jun 2024 19:26:35 +0800 Message-Id: <20240604112636.236517-2-lilingfeng@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240604112636.236517-1-lilingfeng@huaweicloud.com> References: <20240604112636.236517-1-lilingfeng@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgAXKwTp+V5mJkItOg--.61165S5 X-Coremail-Antispam: 1UD129KBjvJXoWxKr4UGFW7JFy8Zr4DZr1DZFb_yoWDGFy7pF 4xAw18Gr48Jr17WF1kAa15Zw1S9ryv9F17GryrW34Fvwnxtrs3W3Zrt3WYvry5CrW8Gry3 XF4Ykw1UK3W7ZFJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUP014x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUGVWUXwAv7VC2z280aVAFwI0_Gr0_Cr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v2 6r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_GFv_WrylIxkGc2 Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_ Cr0_Gr1UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVW8JVWxJw CI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJrUvcSsGvfC2KfnxnUUI43ZEXa7VUbm9aPUU UUU== X-CM-SenderInfo: polox0xjih0w46kxt4xhlfz01xgou0bp/ From: Li Lingfeng This commit has no functional change. Get sb_flags by nameidata, and pass it to submount. Signed-off-by: Li Lingfeng --- fs/afs/internal.h | 2 +- fs/afs/mntpt.c | 4 ++-- fs/autofs/root.c | 4 ++-- fs/debugfs/inode.c | 2 +- fs/fs_context.c | 5 +++-- fs/fuse/dir.c | 4 ++-- fs/namei.c | 3 ++- fs/nfs/internal.h | 2 +- fs/nfs/namespace.c | 4 ++-- fs/smb/client/cifsfs.h | 2 +- fs/smb/client/namespace.c | 2 +- include/linux/dcache.h | 2 +- include/linux/fs_context.h | 3 ++- 13 files changed, 21 insertions(+), 18 deletions(-) diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 6e1d3c4daf72..dc07446e6378 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -1295,7 +1295,7 @@ extern const struct inode_operations afs_mntpt_inode_operations; extern const struct inode_operations afs_autocell_inode_operations; extern const struct file_operations afs_mntpt_file_operations; -extern struct vfsmount *afs_d_automount(struct path *); +extern struct vfsmount *afs_d_automount(struct path *, unsigned int); extern void afs_mntpt_kill_timer(void); /* diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index 297487ee8323..3519deab514f 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -161,7 +161,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt) BUG_ON(!d_inode(mntpt)); - fc = fs_context_for_submount(&afs_fs_type, mntpt); + fc = fs_context_for_submount(&afs_fs_type, mntpt, 0); if (IS_ERR(fc)) return ERR_CAST(fc); @@ -178,7 +178,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt) /* * handle an automount point */ -struct vfsmount *afs_d_automount(struct path *path) +struct vfsmount *afs_d_automount(struct path *path, unsigned int sb_flags) { struct vfsmount *newmnt; diff --git a/fs/autofs/root.c b/fs/autofs/root.c index 530d18827e35..f7294d3a089f 100644 --- a/fs/autofs/root.c +++ b/fs/autofs/root.c @@ -25,7 +25,7 @@ static long autofs_root_compat_ioctl(struct file *, static int autofs_dir_open(struct inode *inode, struct file *file); static struct dentry *autofs_lookup(struct inode *, struct dentry *, unsigned int); -static struct vfsmount *autofs_d_automount(struct path *); +static struct vfsmount *autofs_d_automount(struct path *, unsigned int); static int autofs_d_manage(const struct path *, bool); static void autofs_dentry_release(struct dentry *); @@ -328,7 +328,7 @@ static struct dentry *autofs_mountpoint_changed(struct path *path) return path->dentry; } -static struct vfsmount *autofs_d_automount(struct path *path) +static struct vfsmount *autofs_d_automount(struct path *path, unsigned int sb_flags) { struct dentry *dentry = path->dentry; struct autofs_sb_info *sbi = autofs_sbi(dentry->d_sb); diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index dc51df0b118d..a2cdab95d12a 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -229,7 +229,7 @@ static void debugfs_release_dentry(struct dentry *dentry) kfree(fsd); } -static struct vfsmount *debugfs_automount(struct path *path) +static struct vfsmount *debugfs_automount(struct path *path, unsigned int sb_flags) { struct debugfs_fsdata *fsd = path->dentry->d_fsdata; diff --git a/fs/fs_context.c b/fs/fs_context.c index 98589aae5208..95367dc7dc40 100644 --- a/fs/fs_context.c +++ b/fs/fs_context.c @@ -352,12 +352,13 @@ EXPORT_SYMBOL(fs_context_for_reconfigure); * the fc->security object is inherited from @reference (if needed). */ struct fs_context *fs_context_for_submount(struct file_system_type *type, - struct dentry *reference) + struct dentry *reference, + unsigned int sb_flags) { struct fs_context *fc; int ret; - fc = alloc_fs_context(type, reference, 0, 0, FS_CONTEXT_FOR_SUBMOUNT); + fc = alloc_fs_context(type, reference, sb_flags, 0, FS_CONTEXT_FOR_SUBMOUNT); if (IS_ERR(fc)) return fc; diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 2b0d4781f394..88bd5aec11e7 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -305,13 +305,13 @@ static int fuse_dentry_delete(const struct dentry *dentry) * as the root), and return that mount so it can be auto-mounted on * @path. */ -static struct vfsmount *fuse_dentry_automount(struct path *path) +static struct vfsmount *fuse_dentry_automount(struct path *path, unsigned int sb_flags) { struct fs_context *fsc; struct vfsmount *mnt; struct fuse_inode *mp_fi = get_fuse_inode(d_inode(path->dentry)); - fsc = fs_context_for_submount(path->mnt->mnt_sb->s_type, path->dentry); + fsc = fs_context_for_submount(path->mnt->mnt_sb->s_type, path->dentry, 0); if (IS_ERR(fsc)) return ERR_CAST(fsc); diff --git a/fs/namei.c b/fs/namei.c index 37fb0a8aa09a..445de9fcef38 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1345,6 +1345,7 @@ static bool choose_mountpoint(struct mount *m, const struct path *root, static int follow_automount(struct path *path, int *count, unsigned lookup_flags) { struct dentry *dentry = path->dentry; + struct nameidata *nd = container_of(count, struct nameidata, total_link_count); /* We don't want to mount if someone's just doing a stat - * unless they're stat'ing a directory and appended a '/' to @@ -1365,7 +1366,7 @@ static int follow_automount(struct path *path, int *count, unsigned lookup_flags if (count && (*count)++ >= MAXSYMLINKS) return -ELOOP; - return finish_automount(dentry->d_op->d_automount(path), path); + return finish_automount(dentry->d_op->d_automount(path, nd->root.mnt->mnt_sb->s_flags), path); } /* diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 9f0f4534744b..f0e35e0d05c9 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -484,7 +484,7 @@ static inline bool nfs_file_io_is_buffered(struct nfs_inode *nfsi) #define NFS_PATH_CANONICAL 1 extern char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen, unsigned flags); -extern struct vfsmount *nfs_d_automount(struct path *path); +extern struct vfsmount *nfs_d_automount(struct path *path, unsigned int); int nfs_submount(struct fs_context *, struct nfs_server *); int nfs_do_submount(struct fs_context *); diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index e7494cdd957e..887aeacedebd 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -142,7 +142,7 @@ EXPORT_SYMBOL_GPL(nfs_path); * situation, and that different filesystems may want to use * different security flavours. */ -struct vfsmount *nfs_d_automount(struct path *path) +struct vfsmount *nfs_d_automount(struct path *path, unsigned int sb_flags) { struct nfs_fs_context *ctx; struct fs_context *fc; @@ -158,7 +158,7 @@ struct vfsmount *nfs_d_automount(struct path *path) /* Open a new filesystem context, transferring parameters from the * parent superblock, including the network namespace. */ - fc = fs_context_for_submount(path->mnt->mnt_sb->s_type, path->dentry); + fc = fs_context_for_submount(path->mnt->mnt_sb->s_type, path->dentry, 0); if (IS_ERR(fc)) return ERR_CAST(fc); diff --git a/fs/smb/client/cifsfs.h b/fs/smb/client/cifsfs.h index 62d5fee3e5eb..eec5d5fa42a5 100644 --- a/fs/smb/client/cifsfs.h +++ b/fs/smb/client/cifsfs.h @@ -113,7 +113,7 @@ extern int cifs_readdir(struct file *file, struct dir_context *ctx); extern const struct dentry_operations cifs_dentry_ops; extern const struct dentry_operations cifs_ci_dentry_ops; -extern struct vfsmount *cifs_d_automount(struct path *path); +extern struct vfsmount *cifs_d_automount(struct path *path, unsigned int sb_flags); /* Functions related to symlinks */ extern const char *cifs_get_link(struct dentry *, struct inode *, diff --git a/fs/smb/client/namespace.c b/fs/smb/client/namespace.c index 4a517b280f2b..81640e6b2d3f 100644 --- a/fs/smb/client/namespace.c +++ b/fs/smb/client/namespace.c @@ -254,7 +254,7 @@ static struct vfsmount *cifs_do_automount(struct path *path) /* * Attempt to automount the referral */ -struct vfsmount *cifs_d_automount(struct path *path) +struct vfsmount *cifs_d_automount(struct path *path, unsigned int sb_flags) { struct vfsmount *newmnt; diff --git a/include/linux/dcache.h b/include/linux/dcache.h index bf53e3894aae..864b0cd1c0c9 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -142,7 +142,7 @@ struct dentry_operations { void (*d_prune)(struct dentry *); void (*d_iput)(struct dentry *, struct inode *); char *(*d_dname)(struct dentry *, char *, int); - struct vfsmount *(*d_automount)(struct path *); + struct vfsmount *(*d_automount)(struct path *, unsigned int sb_flags); int (*d_manage)(const struct path *, bool); struct dentry *(*d_real)(struct dentry *, enum d_real_type type); } ____cacheline_aligned; diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h index c13e99cbbf81..920bcbfaff2e 100644 --- a/include/linux/fs_context.h +++ b/include/linux/fs_context.h @@ -130,7 +130,8 @@ extern struct fs_context *fs_context_for_reconfigure(struct dentry *dentry, unsigned int sb_flags, unsigned int sb_flags_mask); extern struct fs_context *fs_context_for_submount(struct file_system_type *fs_type, - struct dentry *reference); + struct dentry *reference, + unsigned int sb_flags); extern struct fs_context *vfs_dup_fs_context(struct fs_context *fc); extern int vfs_parse_fs_param(struct fs_context *fc, struct fs_parameter *param);