The quilt patch titled Subject: mm: revert "mm: shmem: fix data-race in shmem_getattr()" has been removed from the -mm tree. Its filename was mm-revert-mm-shmem-fix-data-race-in-shmem_getattr.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: Andrew Morton akpm@linux-foundation.org Subject: mm: revert "mm: shmem: fix data-race in shmem_getattr()" Date: Fri Nov 15 04:57:24 PM PST 2024

Revert d949d1d14fa2 ("mm: shmem: fix data-race in shmem_getattr()") as suggested by Chuck [1]. It is causing deadlocks when accessing tmpfs over NFS.

As Hugh commented, "added just to silence a syzbot sanitizer splat: added where there has never been any practical problem".

Link: https://lkml.kernel.org/r/ZzdxKF39VEmXSSyN@tissot.1015granger.net [1] Fixes: d949d1d14fa2 ("mm: shmem: fix data-race in shmem_getattr()") Acked-by: Hugh Dickins hughd@google.com Cc: Chuck Lever chuck.lever@oracle.com Cc: Jeongjun Park aha310510@gmail.com Cc: Yu Zhao yuzhao@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/shmem.c | 2 -- 1 file changed, 2 deletions(-)

--- a/mm/shmem.c~mm-revert-mm-shmem-fix-data-race-in-shmem_getattr +++ a/mm/shmem.c @@ -1166,9 +1166,7 @@ static int shmem_getattr(struct mnt_idma stat->attributes_mask |= (STATX_ATTR_APPEND | STATX_ATTR_IMMUTABLE | STATX_ATTR_NODUMP); - inode_lock_shared(inode); generic_fillattr(idmap, request_mask, inode, stat); - inode_unlock_shared(inode);

if (shmem_huge_global_enabled(inode, 0, 0, false, NULL, 0)) stat->blksize = HPAGE_PMD_SIZE; _

Patches currently in -mm which might be from akpm@linux-foundation.org are

fs-proc-vmcorec-fix-warning-when-config_mmu=n.patch