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authorAl Viro <viro@zeniv.linux.org.uk>2010-12-18 18:44:00 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-13 04:02:43 +0300
commit3d23985d6cfa7908e46fd0c62a2ee84faffe4d8b (patch)
tree5561a4f3eb3ef265de2b6d224194ff58b713fe0a /fs/fat/namei_vfat.c
parent6cc9c1d2c1414ef67f465462aa96a5d1fed12f5d (diff)
downloadlinux-3d23985d6cfa7908e46fd0c62a2ee84faffe4d8b.tar.xz
switch fat to ->s_d_op, close exportfs races there
don't bother with lock_super() in fat_fill_super() callers, while we are at it - there won't be any concurrency anyway. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/fat/namei_vfat.c')
-rw-r--r--fs/fat/namei_vfat.c27
1 files changed, 9 insertions, 18 deletions
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index e3ffc5e12332..f88f752babd9 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -772,13 +772,10 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
out:
unlock_super(sb);
- d_set_d_op(dentry, sb->s_root->d_op);
dentry->d_time = dentry->d_parent->d_inode->i_version;
dentry = d_splice_alias(inode, dentry);
- if (dentry) {
- d_set_d_op(dentry, sb->s_root->d_op);
+ if (dentry)
dentry->d_time = dentry->d_parent->d_inode->i_version;
- }
return dentry;
error:
@@ -1066,24 +1063,18 @@ static const struct inode_operations vfat_dir_inode_operations = {
.getattr = fat_getattr,
};
-static int vfat_fill_super(struct super_block *sb, void *data, int silent)
+static void setup(struct super_block *sb)
{
- int res;
-
- lock_super(sb);
- res = fat_fill_super(sb, data, silent, &vfat_dir_inode_operations, 1);
- if (res) {
- unlock_super(sb);
- return res;
- }
-
if (MSDOS_SB(sb)->options.name_check != 's')
- d_set_d_op(sb->s_root, &vfat_ci_dentry_ops);
+ sb->s_d_op = &vfat_ci_dentry_ops;
else
- d_set_d_op(sb->s_root, &vfat_dentry_ops);
+ sb->s_d_op = &vfat_dentry_ops;
+}
- unlock_super(sb);
- return 0;
+static int vfat_fill_super(struct super_block *sb, void *data, int silent)
+{
+ return fat_fill_super(sb, data, silent, &vfat_dir_inode_operations,
+ 1, setup);
}
static struct dentry *vfat_mount(struct file_system_type *fs_type,