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Date: Sat, 16 Feb 2008 21:57:26 -0500
From: Erez Zadok <ezk@...sunysb.edu>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
viro@....linux.org.uk, hch@...radead.org,
Erez Zadok <ezk@...sunysb.edu>
Subject: [PATCH 17/17] VFS/Unionfs: use generic path_get/path_put functions
Remove unionfs's versions thereof.
Signed-off-by: Erez Zadok <ezk@...sunysb.edu>
---
fs/unionfs/main.c | 10 +++++-----
fs/unionfs/super.c | 27 ++++++++++++++-------------
include/linux/namei.h | 12 ------------
3 files changed, 19 insertions(+), 30 deletions(-)
diff --git a/fs/unionfs/main.c b/fs/unionfs/main.c
index 3585b29..8f59fb5 100644
--- a/fs/unionfs/main.c
+++ b/fs/unionfs/main.c
@@ -230,11 +230,11 @@ void unionfs_reinterpose(struct dentry *dentry)
int check_branch(struct nameidata *nd)
{
/* XXX: remove in ODF code -- stacking unions allowed there */
- if (!strcmp(nd->dentry->d_sb->s_type->name, UNIONFS_NAME))
+ if (!strcmp(nd->path.dentry->d_sb->s_type->name, UNIONFS_NAME))
return -EINVAL;
- if (!nd->dentry->d_inode)
+ if (!nd->path.dentry->d_inode)
return -ENOENT;
- if (!S_ISDIR(nd->dentry->d_inode->i_mode))
+ if (!S_ISDIR(nd->path.dentry->d_inode->i_mode))
return -ENOTDIR;
return 0;
}
@@ -375,8 +375,8 @@ static int parse_dirs_option(struct super_block *sb, struct unionfs_dentry_info
goto out;
}
- lower_root_info->lower_paths[bindex].dentry = nd.dentry;
- lower_root_info->lower_paths[bindex].mnt = nd.mnt;
+ lower_root_info->lower_paths[bindex].dentry = nd.path.dentry;
+ lower_root_info->lower_paths[bindex].mnt = nd.path.mnt;
set_branchperms(sb, bindex, perms);
set_branch_count(sb, bindex, 0);
diff --git a/fs/unionfs/super.c b/fs/unionfs/super.c
index 773623e..fba1598 100644
--- a/fs/unionfs/super.c
+++ b/fs/unionfs/super.c
@@ -231,8 +231,8 @@ static noinline int do_remount_mode_option(char *optarg, int cur_branches,
goto out;
}
for (idx = 0; idx < cur_branches; idx++)
- if (nd.mnt == new_lower_paths[idx].mnt &&
- nd.dentry == new_lower_paths[idx].dentry)
+ if (nd.path.mnt == new_lower_paths[idx].mnt &&
+ nd.path.dentry == new_lower_paths[idx].dentry)
break;
path_put(&nd.path); /* no longer needed */
if (idx == cur_branches) {
@@ -274,8 +274,8 @@ static noinline int do_remount_del_option(char *optarg, int cur_branches,
goto out;
}
for (idx = 0; idx < cur_branches; idx++)
- if (nd.mnt == new_lower_paths[idx].mnt &&
- nd.dentry == new_lower_paths[idx].dentry)
+ if (nd.path.mnt == new_lower_paths[idx].mnt &&
+ nd.path.dentry == new_lower_paths[idx].dentry)
break;
path_put(&nd.path); /* no longer needed */
if (idx == cur_branches) {
@@ -358,8 +358,8 @@ static noinline int do_remount_add_option(char *optarg, int cur_branches,
goto out;
}
for (idx = 0; idx < cur_branches; idx++)
- if (nd.mnt == new_lower_paths[idx].mnt &&
- nd.dentry == new_lower_paths[idx].dentry)
+ if (nd.path.mnt == new_lower_paths[idx].mnt &&
+ nd.path.dentry == new_lower_paths[idx].dentry)
break;
path_put(&nd.path); /* no longer needed */
if (idx == cur_branches) {
@@ -425,10 +425,10 @@ found_insertion_point:
memmove(&new_lower_paths[idx+1], &new_lower_paths[idx],
(cur_branches - idx) * sizeof(struct path));
}
- new_lower_paths[idx].dentry = nd.dentry;
- new_lower_paths[idx].mnt = nd.mnt;
+ new_lower_paths[idx].dentry = nd.path.dentry;
+ new_lower_paths[idx].mnt = nd.path.mnt;
- new_data[idx].sb = nd.dentry->d_sb;
+ new_data[idx].sb = nd.path.dentry->d_sb;
atomic_set(&new_data[idx].open_files, 0);
new_data[idx].branchperms = perms;
new_data[idx].branch_id = ++*high_branch_id; /* assign new branch ID */
@@ -577,7 +577,7 @@ static int unionfs_remount_fs(struct super_block *sb, int *flags,
memcpy(tmp_lower_paths, UNIONFS_D(sb->s_root)->lower_paths,
cur_branches * sizeof(struct path));
for (i = 0; i < cur_branches; i++)
- pathget(&tmp_lower_paths[i]); /* drop refs at end of fxn */
+ path_get(&tmp_lower_paths[i]); /* drop refs at end of fxn */
/*******************************************************************
* For each branch command, do path_lookup on the requested branch,
@@ -1008,9 +1008,10 @@ static int unionfs_show_options(struct seq_file *m, struct vfsmount *mnt)
seq_printf(m, ",dirs=");
for (bindex = bstart; bindex <= bend; bindex++) {
- path = d_path(unionfs_lower_dentry_idx(sb->s_root, bindex),
- unionfs_lower_mnt_idx(sb->s_root, bindex),
- tmp_page, PAGE_SIZE);
+ struct path p;
+ p.dentry = unionfs_lower_dentry_idx(sb->s_root, bindex);
+ p.mnt = unionfs_lower_mnt_idx(sb->s_root, bindex);
+ path = d_path(&p, tmp_page, PAGE_SIZE);
if (IS_ERR(path)) {
ret = PTR_ERR(path);
goto out;
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 7ffeb21..24d88e9 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -93,16 +93,4 @@ static inline char *nd_get_link(struct nameidata *nd)
return nd->saved_names[nd->depth];
}
-static inline void pathget(struct path *path)
-{
- mntget(path->mnt);
- dget(path->dentry);
-}
-
-static inline void pathput(struct path *path)
-{
- dput(path->dentry);
- mntput(path->mnt);
-}
-
#endif /* _LINUX_NAMEI_H */
--
1.5.2.2
--
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