The quilt patch titled Subject: writeback: fix false warning in inode_to_wb() has been removed from the -mm tree. Its filename was writeback-fix-false-warning-in-inode_to_wb.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------ From: Andreas Gruenbacher agruenba@redhat.com Subject: writeback: fix false warning in inode_to_wb() Date: Sat, 12 Apr 2025 18:39:12 +0200
inode_to_wb() is used also for filesystems that don't support cgroup writeback. For these filesystems inode->i_wb is stable during the lifetime of the inode (it points to bdi->wb) and there's no need to hold locks protecting the inode->i_wb dereference. Improve the warning in inode_to_wb() to not trigger for these filesystems.
Link: https://lkml.kernel.org/r/20250412163914.3773459-3-agruenba@redhat.com Fixes: aaa2cacf8184 ("writeback: add lockdep annotation to inode_to_wb()") Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Andreas Gruenbacher agruenba@redhat.com Reviewed-by: Andreas Gruenbacher agruenba@redhat.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
include/linux/backing-dev.h | 1 + 1 file changed, 1 insertion(+)
--- a/include/linux/backing-dev.h~writeback-fix-false-warning-in-inode_to_wb +++ a/include/linux/backing-dev.h @@ -249,6 +249,7 @@ static inline struct bdi_writeback *inod { #ifdef CONFIG_LOCKDEP WARN_ON_ONCE(debug_locks && + (inode->i_sb->s_iflags & SB_I_CGROUPWB) && (!lockdep_is_held(&inode->i_lock) && !lockdep_is_held(&inode->i_mapping->i_pages.xa_lock) && !lockdep_is_held(&inode->i_wb->list_lock))); _
Patches currently in -mm which might be from agruenba@redhat.com are