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authorAl Viro <viro@zeniv.linux.org.uk>2012-06-07 20:51:39 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-07-14 16:35:06 +0400
commit469796d10590341c53cff0a2959254eaf5d465de (patch)
tree74728e34d43bbcd16600de66df8c453d3a35ee63
parent79714f72d3b964611997de512cb29198c9f2dbbb (diff)
downloadvexpress-lsk-469796d10590341c53cff0a2959254eaf5d465de.tar.gz
sysfs: switch to ->s_d_op and ->d_release()
a) ->d_iput() is wrong here - what we do to inode is completely usual, it's dentry->d_fsdata that we want to drop. Just use ->d_release(). b) switch to ->s_d_op - no need to play with d_set_d_op() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/sysfs/dir.c16
-rw-r--r--fs/sysfs/mount.c1
-rw-r--r--fs/sysfs/sysfs.h1
3 files changed, 8 insertions, 10 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index efd373e3e0a..77c44ce493f 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -300,7 +300,7 @@ void release_sysfs_dirent(struct sysfs_dirent * sd)
static int sysfs_dentry_delete(const struct dentry *dentry)
{
struct sysfs_dirent *sd = dentry->d_fsdata;
- return !!(sd->s_flags & SYSFS_FLAG_REMOVED);
+ return !(sd && !(sd->s_flags & SYSFS_FLAG_REMOVED));
}
static int sysfs_dentry_revalidate(struct dentry *dentry, unsigned int flags)
@@ -355,18 +355,15 @@ out_bad:
return 0;
}
-static void sysfs_dentry_iput(struct dentry *dentry, struct inode *inode)
+static void sysfs_dentry_release(struct dentry *dentry)
{
- struct sysfs_dirent * sd = dentry->d_fsdata;
-
- sysfs_put(sd);
- iput(inode);
+ sysfs_put(dentry->d_fsdata);
}
-static const struct dentry_operations sysfs_dentry_ops = {
+const struct dentry_operations sysfs_dentry_ops = {
.d_revalidate = sysfs_dentry_revalidate,
.d_delete = sysfs_dentry_delete,
- .d_iput = sysfs_dentry_iput,
+ .d_release = sysfs_dentry_release,
};
struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type)
@@ -786,6 +783,7 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
ret = ERR_PTR(-ENOENT);
goto out_unlock;
}
+ dentry->d_fsdata = sysfs_get(sd);
/* attach dentry and inode */
inode = sysfs_get_inode(dir->i_sb, sd);
@@ -797,8 +795,6 @@ static struct dentry * sysfs_lookup(struct inode *dir, struct dentry *dentry,
/* instantiate and hash dentry */
ret = d_find_alias(inode);
if (!ret) {
- d_set_d_op(dentry, &sysfs_dentry_ops);
- dentry->d_fsdata = sysfs_get(sd);
d_add(dentry, inode);
} else {
d_move(ret, dentry);
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 52c3bdb66a8..c15a7a3572e 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -68,6 +68,7 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
}
root->d_fsdata = &sysfs_root;
sb->s_root = root;
+ sb->s_d_op = &sysfs_dentry_ops;
return 0;
}
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 661a9639570..d73c0932bbd 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -157,6 +157,7 @@ extern struct kmem_cache *sysfs_dir_cachep;
*/
extern struct mutex sysfs_mutex;
extern spinlock_t sysfs_assoc_lock;
+extern const struct dentry_operations sysfs_dentry_ops;
extern const struct file_operations sysfs_dir_operations;
extern const struct inode_operations sysfs_dir_inode_operations;