Re: [PATCH v4 00/54] tree-in-dcache stuff

Samuel Wu
2026-01-30T23:03:23Z

On Thu, Jan 29, 2026 at 11:02 PM Al Viro <viro@zeniv.linux.org.uk> wrote:
> OK. Could you take a clone of mainline repository and in there run
> ; git fetch git://git.kernel.org:/pub/scm/linux/kernel/git/viro/vfs.git for-wsamuel:for-wsamuel
> then
> ; git diff for-wsamuel e5bf5ee26663
> to verify that for-wsamuel is identical to tree you've seen breakage on
> ; git diff for-wsamuel-base 1544775687f0
> to verify that for-wsamuel-base is the tree where the breakage did not reproduce
> Then bisect from for-wsamuel-base to for-wsamuel.
>
> Basically, that's the offending commit split into steps; let's try to figure
> out what causes the breakage with better resolution...

Confirming that bisect points to this patch: 09e88dc22ea2 (serialize
ffs_ep0_open() on ffs->mutex)