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eventfs: Keep the directories from having the same inode number as files

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commit 8898e7f288 upstream.

The directories require unique inode numbers but all the eventfs files
have the same inode number. Prevent the directories from having the same
inode numbers as the files as that can confuse some tooling.

Link: https://lore.kernel.org/linux-trace-kernel/20240523051539.428826685@goodmis.org

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Fixes: 834bf76add ("eventfs: Save directory inodes in the eventfs_inode structure")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Steven Rostedt (Google) 2024-05-23 01:14:26 -04:00 committed by Greg Kroah-Hartman
parent 5ade5fbdbb
commit 4e84ead3f6
1 changed files with 5 additions and 1 deletions
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6
fs/tracefs/event_inode.c
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@ -50,8 +50,12 @@ static struct eventfs_root_inode *get_root_inode(struct eventfs_inode *ei)
/* Just try to make something consistent and unique */ /* Just try to make something consistent and unique */
static int eventfs_dir_ino(struct eventfs_inode *ei) static int eventfs_dir_ino(struct eventfs_inode *ei)
{ {
if (!ei->ino) if (!ei->ino) {
ei->ino = get_next_ino(); ei->ino = get_next_ino();
/* Must not have the file inode number */
if (ei->ino == EVENTFS_FILE_INODE_INO)
ei->ino = get_next_ino();
}
return ei->ino; return ei->ino;
} }