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btrfs: fix uninitialized variable warning in btrfs_sb_log_location

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We only have 3 possible mirrors, and we have ASSERT()'s to make sure
we're not passing in an invalid super mirror into this function, so
technically this value isn't uninitialized.  However
-Wmaybe-uninitialized will complain, so set it to U64_MAX so if we don't
have ASSERT()'s turned on it'll error out later on when it see's the
zone is beyond our maximum zones.

Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2022-12-16 15:15:57 -05:00 committed by David Sterba
parent 598643250c
commit 12adffe6cf
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/zoned.c
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@ -160,7 +160,7 @@ static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zones,
*/ */
static inline u32 sb_zone_number(int shift, int mirror) static inline u32 sb_zone_number(int shift, int mirror)
{ {
u64 zone; u64 zone = U64_MAX;
ASSERT(mirror < BTRFS_SUPER_MIRROR_MAX); ASSERT(mirror < BTRFS_SUPER_MIRROR_MAX);
switch (mirror) { switch (mirror) {