syzbot

btree trans held srcu lock (delaying memory reclaim) for 25 seconds
WARNING: CPU: 1 PID: 6225 at fs/bcachefs/btree_iter.c:3276 check_srcu_held_too_long fs/bcachefs/btree_iter.c:3274 [inline]
WARNING: CPU: 1 PID: 6225 at fs/bcachefs/btree_iter.c:3276 bch2_trans_put+0xf90/0x1220 fs/bcachefs/btree_iter.c:3570
Modules linked in:
CPU: 1 UID: 0 PID: 6225 Comm: kworker/1:2H Not tainted 6.16.0-syzkaller-10499-g89748acdf226 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: bcachefs_btree_write_complete btree_node_write_work
RIP: 0010:check_srcu_held_too_long fs/bcachefs/btree_iter.c:3274 [inline]
RIP: 0010:bch2_trans_put+0xf90/0x1220 fs/bcachefs/btree_iter.c:3570
Code: 2b 33 49 c1 ee 02 48 b9 c3 f5 28 5c 8f c2 f5 28 4c 89 f0 48 f7 e1 48 c1 ea 02 48 c7 c7 c0 8c d3 8b 48 89 d6 e8 31 39 5b fd 90 <0f> 0b 90 90 e9 98 f7 ff ff e8 f2 76 97 fd 90 0f 0b 90 e9 de f7 ff
RSP: 0018:ffffc9000418f740 EFLAGS: 00010246
RAX: f871c561b5803f00 RBX: ffff8882294d0088 RCX: ffff888025c50000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc9000418f8b0 R08: ffffffff8fa1ba37 R09: 1ffffffff1f43746
R10: dffffc0000000000 R11: fffffbfff1f43747 R12: 00000000ffffd163
R13: 1ffff1104529a011 R14: 0000000000000275 R15: 1ffff1104529a009
FS:  0000000000000000(0000) GS:ffff888125d5b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557f8717e0 CR3: 00000000773f5000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 class_btree_trans_destructor fs/bcachefs/btree_iter.h:991 [inline]
 btree_node_write_work+0xafb/0xc40 fs/bcachefs/btree_io.c:2203
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400