[linux-next:master 7634/8795] fs/bcachefs/sb-members.c:503:2: error: expected expression

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   6804f0edbe7747774e6ae60f20cec4ee3ad7c187
commit: 4e7795eda4459bf3e69c87c793bc34f610f9d981 [7634/8795] bcachefs: bch2_sb_member_alloc()
config: powerpc64-randconfig-003-20240903 (https://download.01.org/0day-ci/archive/20240903/202409031807.S80qlUjK-lkp@intel.com/config)
compiler: clang version 16.0.6 (https://github.com/llvm/llvm-project 7cbf1a2591520c2491aa35339f227775f4d3adf6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240903/202409031807.S80qlUjK-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409031807.S80qlUjK-lkp@intel.com/

All errors (new ones prefixed by >>):

>> fs/bcachefs/sb-members.c:503:2: error: expected expression
           unsigned nr_devices = max_t(unsigned, dev_idx + 1, c->sb.nr_devices);
           ^
>> fs/bcachefs/sb-members.c:507:42: error: use of undeclared identifier 'nr_devices'
                                        le16_to_cpu(mi->member_bytes) * nr_devices, sizeof(u64));
                                                                        ^
   include/linux/math.h:37:22: note: expanded from macro 'DIV_ROUND_UP'
   #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP
                        ^
   fs/bcachefs/sb-members.c:513:30: error: use of undeclared identifier 'nr_devices'
           c->disk_sb.sb->nr_devices = nr_devices;
                                       ^
   3 errors generated.


vim +503 fs/bcachefs/sb-members.c

   476	
   477	int bch2_sb_member_alloc(struct bch_fs *c)
   478	{
   479		unsigned dev_idx = c->sb.nr_devices;
   480		if (dev_idx < BCH_SB_MEMBERS_MAX)
   481			goto have_slot;
   482	
   483		int best = -1;
   484		u64 best_last_mount = 0;
   485		for (dev_idx = 0; dev_idx < BCH_SB_MEMBERS_MAX; dev_idx++) {
   486			struct bch_member m = bch2_sb_member_get(c->disk_sb.sb, dev_idx);
   487			if (bch2_member_alive(&m))
   488				continue;
   489	
   490			u64 last_mount = le64_to_cpu(m.last_mount);
   491			if (best < 0 || last_mount < best_last_mount) {
   492				best = dev_idx;
   493				best_last_mount = last_mount;
   494			}
   495		}
   496		if (best >= 0) {
   497			dev_idx = best;
   498			goto have_slot;
   499		}
   500	
   501		return -BCH_ERR_ENOSPC_sb_members;
   502	have_slot:
 > 503		unsigned nr_devices = max_t(unsigned, dev_idx + 1, c->sb.nr_devices);
   504	
   505		struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);
   506		unsigned u64s = DIV_ROUND_UP(sizeof(struct bch_sb_field_members_v2) +
 > 507					     le16_to_cpu(mi->member_bytes) * nr_devices, sizeof(u64));

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