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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2019-11-09 23:50:52 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:08:32 -0400 |
| commit | ad44bdc351faeacb9b7294f1689ac76babf379ad (patch) | |
| tree | 934bff1cc441503b9ee92e7702c14c45f08388a8 /fs/bcachefs/bkey.h | |
| parent | aef90ce085123c3d0c3f110b4c50b77d007b2d5d (diff) | |
| download | linux-ad44bdc351faeacb9b7294f1689ac76babf379ad.tar.gz linux-ad44bdc351faeacb9b7294f1689ac76babf379ad.tar.bz2 linux-ad44bdc351faeacb9b7294f1689ac76babf379ad.zip | |
bcachefs: bkey noops
For upcoming inline data extents, we're going to need to be able to
shorten the value of existing bkeys in the btree - and to make that work
we're going to be able to need to pad out the space the value previously
took up with something.
This patch changes the various code that iterates over bkeys to handle
k->u64s == 0 as meaning "skip the next 8 bytes".
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/bkey.h')
| -rw-r--r-- | fs/bcachefs/bkey.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/bcachefs/bkey.h b/fs/bcachefs/bkey.h index cb2702707c2a..ba4d6329e37a 100644 --- a/fs/bcachefs/bkey.h +++ b/fs/bcachefs/bkey.h @@ -41,6 +41,16 @@ struct bkey_s { #define bkey_next(_k) vstruct_next(_k) +static inline struct bkey_packed *bkey_next_skip_noops(struct bkey_packed *k, + struct bkey_packed *end) +{ + k = bkey_next(k); + + while (k != end && !k->u64s) + k = (void *) ((u64 *) k + 1); + return k; +} + #define bkey_val_u64s(_k) ((_k)->u64s - BKEY_U64s) static inline size_t bkey_val_bytes(const struct bkey *k) |