Messages in this thread Patch in this message | | | Date | Tue, 06 Feb 2024 06:32:19 -0500 | From | Steven Rostedt <> | Subject | [v6.7][PATCH v2 21/23] eventfs: Restructure eventfs_inode structure to be more condensed |
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From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
Some of the eventfs_inode structure has holes in it. Rework the structure to be a bit more condensed, and also remove the no longer used llist field.
Link: https://lore.kernel.org/linux-trace-kernel/20240201161617.002321438@goodmis.org
Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Ajay Kaher <ajay.kaher@broadcom.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> (cherry picked from commit 264424dfdd5cbd92bc5b5ddf93944929fc877fac) --- fs/tracefs/internal.h | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/fs/tracefs/internal.h b/fs/tracefs/internal.h index 1886f1826cd8..beb3dcd0e434 100644 --- a/fs/tracefs/internal.h +++ b/fs/tracefs/internal.h @@ -32,40 +32,37 @@ struct eventfs_attr { /* * struct eventfs_inode - hold the properties of the eventfs directories. * @list: link list into the parent directory + * @rcu: Union with @list for freeing + * @children: link list into the child eventfs_inode * @entries: the array of entries representing the files in the directory * @name: the name of the directory to create - * @children: link list into the child eventfs_inode * @events_dir: the dentry of the events directory * @entry_attrs: Saved mode and ownership of the @d_children - * @attr: Saved mode and ownership of eventfs_inode itself * @data: The private data to pass to the callbacks + * @attr: Saved mode and ownership of eventfs_inode itself * @is_freed: Flag set if the eventfs is on its way to be freed * Note if is_freed is set, then dentry is corrupted. + * @is_events: Flag set for only the top level "events" directory * @nr_entries: The number of items in @entries + * @ino: The saved inode number */ struct eventfs_inode { - struct kref kref; - struct list_head list; + union { + struct list_head list; + struct rcu_head rcu; + }; + struct list_head children; const struct eventfs_entry *entries; const char *name; - struct list_head children; struct dentry *events_dir; struct eventfs_attr *entry_attrs; - struct eventfs_attr attr; void *data; + struct eventfs_attr attr; + struct kref kref; unsigned int is_freed:1; unsigned int is_events:1; unsigned int nr_entries:30; unsigned int ino; - /* - * Union - used for deletion - * @llist: for calling dput() if needed after RCU - * @rcu: eventfs_inode to delete in RCU - */ - union { - struct llist_node llist; - struct rcu_head rcu; - }; }; static inline struct tracefs_inode *get_tracefs(const struct inode *inode) -- 2.43.0
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