ext2: annotate s_rsv_window_root as requiring s_rsv_window_lock

The per-filesystem reservation window rb-tree (s_rsv_window_root) is
protected by s_rsv_window_lock. Mark the s_rsv_window_root field
with __guarded_by() for Clang's context analysis.

The helpers (ext2_rsv_window_add, rsv_window_remove, and
find_next_reservable_window) that mutate or walk the tree are all
called with the s_rsv_window_lock held. Annotate these helpers
with __must_hold().

The accesses in ext2_fill_super() are before the superblock is live.
Since no concurrent access should be possible, s_rsv_window_lock
is not taken. Convert the spinlock initialization to use
scoped_guard(spinlock_init, ...) and place the writes under the
guard to prevent warnings.

Signed-off-by: Timothy Day <timday@thelustrecollective.com>
Acked-by: Marco Elver <elver@google.com>
Link: https://patch.msgid.link/20260811160336.782342-8-timday@thelustrecollective.com
Signed-off-by: Jan Kara <jack@suse.cz>

0 files changed, 0 insertions, 0 deletions