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authorLinus Torvalds <torvalds@linux-foundation.org>2023-11-27 06:48:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-11-27 06:48:20 +0300
commit5b2b1173a93fa056b4539ef52e5f03148345d498 (patch)
tree99b81b0dc4645eb7a62408fc3c3ad1baafdb2445 /MAINTAINERS
parentd2da77f431ac49b5763b88751a75f70daa46296c (diff)
parent76d9eafff4484547ed9e606c8227ac9799a9f2da (diff)
downloadlinux-5b2b1173a93fa056b4539ef52e5f03148345d498.tar.xz
Merge tag 'trace-v6.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:: "Eventfs fixes: - With the usage of simple_recursive_remove() recommended by Al Viro, the code should not be calling "d_invalidate()" itself. Doing so is causing crashes. The code was calling d_invalidate() on the race of trying to look up a file while the parent was being deleted. This was detected, and the added dentry was having d_invalidate() called on it, but the deletion of the directory was also calling d_invalidate() on that same dentry. - A fix to not free the eventfs_inode (ei) until the last dput() was called on its ei->dentry made the ei->dentry exist even after it was marked for free by setting the ei->is_freed. But code elsewhere still was checking if ei->dentry was NULL if ei->is_freed is set and would trigger WARN_ON if that was the case. That's no longer true and there should not be any warnings when it is true. - Use GFP_NOFS for allocations done under eventfs_mutex. The eventfs_mutex can be taken on file system reclaim, make sure that allocations done under that mutex do not trigger file system reclaim. - Clean up code by moving the taking of inode_lock out of the helper functions and into where they are needed, and not use the parameter to know to take it or not. It must always be held but some callers of the helper function have it taken when they were called. - Warn if the inode_lock is not held in the helper functions. - Warn if eventfs_start_creating() is called without a parent. As eventfs is underneath tracefs, all files created will have a parent (the top one will have a tracefs parent). Tracing update: - Add Mathieu Desnoyers as an official reviewer of the tracing subsystem" * tag 'trace-v6.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: MAINTAINERS: TRACING: Add Mathieu Desnoyers as Reviewer eventfs: Make sure that parent->d_inode is locked in creating files/dirs eventfs: Do not allow NULL parent to eventfs_start_creating() eventfs: Move taking of inode_lock into dcache_dir_open_wrapper() eventfs: Use GFP_NOFS for allocation when eventfs_mutex is held eventfs: Do not invalidate dentry in create_file/dir_dentry() eventfs: Remove expectation that ei->is_freed means ei->dentry == NULL
Diffstat (limited to 'MAINTAINERS')
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diff --git a/MAINTAINERS b/MAINTAINERS
index 509281e9e169..012df8ccf34e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22079,6 +22079,7 @@ F: drivers/watchdog/tqmx86_wdt.c
TRACING
M: Steven Rostedt <rostedt@goodmis.org>
M: Masami Hiramatsu <mhiramat@kernel.org>
+R: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
L: linux-kernel@vger.kernel.org
L: linux-trace-kernel@vger.kernel.org
S: Maintained