From 4ac9137858e08a19f29feac4e1f4df7c268b0ba5 Mon Sep 17 00:00:00 2001 From: Jan Blunck Date: Thu, 14 Feb 2008 19:34:32 -0800 Subject: Embed a struct path into struct nameidata instead of nd->{dentry,mnt} This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix cifs] [akpm@linux-foundation.org: fix smack] Signed-off-by: Jan Blunck Signed-off-by: Andreas Gruenbacher Acked-by: Christoph Hellwig Cc: Al Viro Cc: Casey Schaufler Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/cifs/cifs_dfs_ref.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) (limited to 'fs/cifs/cifs_dfs_ref.c') diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c index 413ee2349d1a..bcd53c2fe781 100644 --- a/fs/cifs/cifs_dfs_ref.c +++ b/fs/cifs/cifs_dfs_ref.c @@ -259,18 +259,18 @@ static int add_mount_helper(struct vfsmount *newmnt, struct nameidata *nd, int err; mntget(newmnt); - err = do_add_mount(newmnt, nd, nd->mnt->mnt_flags, mntlist); + err = do_add_mount(newmnt, nd, nd->path.mnt->mnt_flags, mntlist); switch (err) { case 0: - dput(nd->dentry); - mntput(nd->mnt); - nd->mnt = newmnt; - nd->dentry = dget(newmnt->mnt_root); + dput(nd->path.dentry); + mntput(nd->path.mnt); + nd->path.mnt = newmnt; + nd->path.dentry = dget(newmnt->mnt_root); break; case -EBUSY: /* someone else made a mount here whilst we were busy */ - while (d_mountpoint(nd->dentry) && - follow_down(&nd->mnt, &nd->dentry)) + while (d_mountpoint(nd->path.dentry) && + follow_down(&nd->path.mnt, &nd->path.dentry)) ; err = 0; default: @@ -307,8 +307,8 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) xid = GetXid(); - dput(nd->dentry); - nd->dentry = dget(dentry); + dput(nd->path.dentry); + nd->path.dentry = dget(dentry); cifs_sb = CIFS_SB(dentry->d_inode->i_sb); ses = cifs_sb->tcon->ses; @@ -340,7 +340,8 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) rc = -EINVAL; goto out_err; } - mnt = cifs_dfs_do_refmount(nd->mnt, nd->dentry, + mnt = cifs_dfs_do_refmount(nd->path.mnt, + nd->path.dentry, referrals[i].node_name); cFYI(1, ("%s: cifs_dfs_do_refmount:%s , mnt:%p", __FUNCTION__, @@ -357,7 +358,7 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) if (IS_ERR(mnt)) goto out_err; - nd->mnt->mnt_flags |= MNT_SHRINKABLE; + nd->path.mnt->mnt_flags |= MNT_SHRINKABLE; rc = add_mount_helper(mnt, nd, &cifs_dfs_automount_list); out: -- cgit v1.2.3 From 1d957f9bf87da74f420424d16ece005202bbebd3 Mon Sep 17 00:00:00 2001 From: Jan Blunck Date: Thu, 14 Feb 2008 19:34:35 -0800 Subject: Introduce path_put() * Add path_put() functions for releasing a reference to the dentry and vfsmount of a struct path in the right order * Switch from path_release(nd) to path_put(&nd->path) * Rename dput_path() to path_put_conditional() [akpm@linux-foundation.org: fix cifs] Signed-off-by: Jan Blunck Signed-off-by: Andreas Gruenbacher Acked-by: Christoph Hellwig Cc: Cc: Al Viro Cc: Steven French Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/cifs/cifs_dfs_ref.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/cifs/cifs_dfs_ref.c') diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c index bcd53c2fe781..6ad447529961 100644 --- a/fs/cifs/cifs_dfs_ref.c +++ b/fs/cifs/cifs_dfs_ref.c @@ -368,7 +368,7 @@ out: cFYI(1, ("leaving %s" , __FUNCTION__)); return ERR_PTR(rc); out_err: - path_release(nd); + path_put(&nd->path); goto out; } -- cgit v1.2.3