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btrfs: add multi-statement protection to btrfs_set/clear_and_info macros

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Multi-statement macros should be enclosed in do/while(0) block to make
their use safe in single statement if conditions. All current uses of
the macros are safe, so this change is for future protection.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Marcos Paulo de Souza 2020-07-06 11:59:36 -03:00 committed by David Sterba
parent 93c4c033ec
commit 60f8667b61
1 changed files with 4 additions and 4 deletions
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8
fs/btrfs/ctree.h
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@ -1279,18 +1279,18 @@ static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
BTRFS_MOUNT_##opt)
#define btrfs_set_and_info(fs_info, opt, fmt, args...) \
{ \
do { \
if (!btrfs_test_opt(fs_info, opt)) \
btrfs_info(fs_info, fmt, ##args); \
btrfs_set_opt(fs_info->mount_opt, opt); \
}
} while (0)
#define btrfs_clear_and_info(fs_info, opt, fmt, args...) \
{ \
do { \
if (btrfs_test_opt(fs_info, opt)) \
btrfs_info(fs_info, fmt, ##args); \
btrfs_clear_opt(fs_info->mount_opt, opt); \
}
} while (0)
/*
* Requests for changes that need to be done during transaction commit.