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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2019-11-09 19:02:48 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:08:32 -0400 |
| commit | 085ab69357e091613625f1505d667b6a5a3ec881 (patch) | |
| tree | df5f4d2d258b9bade329e662464a6a3139a7f384 /fs/bcachefs/extents.h | |
| parent | ad44bdc351faeacb9b7294f1689ac76babf379ad (diff) | |
| download | lwn-085ab69357e091613625f1505d667b6a5a3ec881.tar.gz lwn-085ab69357e091613625f1505d667b6a5a3ec881.zip | |
bcachefs: Rework of cut_front & cut_back
This changes bch2_cut_front and bch2_cut_back so that they're able to
shorten the size of the value, and it also changes the extent update
path to update the accounting in the btree node when this happens.
When the size of the value is shortened, they zero out the space that's
no longer used, so it's interpreted as noops (as implemented in the last
patch).
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/extents.h')
| -rw-r--r-- | fs/bcachefs/extents.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/bcachefs/extents.h b/fs/bcachefs/extents.h index f334b6f763e3..6e893c37c287 100644 --- a/fs/bcachefs/extents.h +++ b/fs/bcachefs/extents.h @@ -534,14 +534,18 @@ do { \ } \ } while (0) -void __bch2_cut_front(struct bpos, struct bkey_s); +int bch2_cut_front_s(struct bpos, struct bkey_s); +int bch2_cut_back_s(struct bpos, struct bkey_s); static inline void bch2_cut_front(struct bpos where, struct bkey_i *k) { - __bch2_cut_front(where, bkey_i_to_s(k)); + bch2_cut_front_s(where, bkey_i_to_s(k)); } -bool bch2_cut_back(struct bpos, struct bkey *); +static inline void bch2_cut_back(struct bpos where, struct bkey_i *k) +{ + bch2_cut_back_s(where, bkey_i_to_s(k)); +} /** * bch_key_resize - adjust size of @k |