diff options
Diffstat (limited to 'fs/tracefs')
| -rw-r--r-- | fs/tracefs/inode.c | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index cfc614c638da..0c023941a316 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -109,9 +109,9 @@ static char *get_dname(struct dentry *dentry) return name; } -static int tracefs_syscall_mkdir(struct mnt_idmap *idmap, - struct inode *inode, struct dentry *dentry, - umode_t mode) +static struct dentry *tracefs_syscall_mkdir(struct mnt_idmap *idmap, + struct inode *inode, struct dentry *dentry, + umode_t mode) { struct tracefs_inode *ti; char *name; @@ -119,7 +119,7 @@ static int tracefs_syscall_mkdir(struct mnt_idmap *idmap, name = get_dname(dentry); if (!name) - return -ENOMEM; + return ERR_PTR(-ENOMEM); /* * This is a new directory that does not take the default of @@ -141,7 +141,7 @@ static int tracefs_syscall_mkdir(struct mnt_idmap *idmap, kfree(name); - return ret; + return ERR_PTR(ret); } static int tracefs_syscall_rmdir(struct inode *inode, struct dentry *dentry) @@ -457,16 +457,28 @@ static void tracefs_d_release(struct dentry *dentry) eventfs_d_release(dentry); } -static int tracefs_d_revalidate(struct dentry *dentry, unsigned int flags) +static int tracefs_d_revalidate(struct inode *inode, const struct qstr *name, + struct dentry *dentry, unsigned int flags) { struct eventfs_inode *ei = dentry->d_fsdata; return !(ei && ei->is_freed); } +static int tracefs_d_delete(const struct dentry *dentry) +{ + /* + * We want to keep eventfs dentries around but not tracefs + * ones. eventfs dentries have content in d_fsdata. + * Use d_fsdata to determine if it's a eventfs dentry or not. + */ + return dentry->d_fsdata == NULL; +} + static const struct dentry_operations tracefs_dentry_operations = { .d_revalidate = tracefs_d_revalidate, .d_release = tracefs_d_release, + .d_delete = tracefs_d_delete, }; static int tracefs_fill_super(struct super_block *sb, struct fs_context *fc) @@ -479,7 +491,7 @@ static int tracefs_fill_super(struct super_block *sb, struct fs_context *fc) return err; sb->s_op = &tracefs_super_operations; - sb->s_d_op = &tracefs_dentry_operations; + set_default_d_op(sb, &tracefs_dentry_operations); return 0; } @@ -550,20 +562,9 @@ struct dentry *tracefs_start_creating(const char *name, struct dentry *parent) if (!parent) parent = tracefs_mount->mnt_root; - inode_lock(d_inode(parent)); - if (unlikely(IS_DEADDIR(d_inode(parent)))) - dentry = ERR_PTR(-ENOENT); - else - dentry = lookup_one_len(name, parent, strlen(name)); - if (!IS_ERR(dentry) && d_inode(dentry)) { - dput(dentry); - dentry = ERR_PTR(-EEXIST); - } - - if (IS_ERR(dentry)) { - inode_unlock(d_inode(parent)); + dentry = simple_start_creating(parent, name); + if (IS_ERR(dentry)) simple_release_fs(&tracefs_mount, &tracefs_mount_count); - } return dentry; } |