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author | David Sterba <dsterba@suse.com> | 2022-09-09 18:20:25 +0300 |
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committer | David Sterba <dsterba@suse.com> | 2022-12-05 20:00:40 +0300 |
commit | d549ff7bdbe72f5e0e934895090fed2647e9813b (patch) | |
tree | 7f70c03d6a6731e292a3bff07eaaa329886fed7b /certs | |
parent | 5565b8e0adcdd8ee32d02d82d98cdf6d966793c7 (diff) | |
download | linux-d549ff7bdbe72f5e0e934895090fed2647e9813b.tar.xz |
btrfs: add helper for bit enumeration
Define helper macro that can be used in enum {} to utilize the automatic
increment to define all bits without directly defining the values or
using additional linear bits.
1. capture the sequence value, N
2. use the value to define the given enum with N-th bit set
3. reset the sequence back to N
Use for enums that do not require fixed values for symbolic names (like
for on-disk structures):
enum {
ENUM_BIT(FIRST),
ENUM_BIT(SECOND),
ENUM_BIT(THIRD)
};
Where the values would be 0x1, 0x2 and 0x4.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'certs')
0 files changed, 0 insertions, 0 deletions