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| author | Nicholas Swenson <nks@daterainc.com> | 2013-11-11 19:36:25 -0800 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2014-01-08 13:05:14 -0800 |
| commit | 3bdad1e40d11aad31f2322f21e943c31ef20d9da (patch) | |
| tree | 2b268d6b0944b97338d3b7a190443551b565e562 /drivers/md | |
| parent | 0f49cf3d83fbf038534c9302095b66b07b9838c3 (diff) | |
| download | linux-3bdad1e40d11aad31f2322f21e943c31ef20d9da.tar.gz linux-3bdad1e40d11aad31f2322f21e943c31ef20d9da.tar.bz2 linux-3bdad1e40d11aad31f2322f21e943c31ef20d9da.zip | |
bcache: Add bch_bkey_equal_header()
Checks if two keys have equivalent header fields.
(good enough for replacement or merging)
Used in bch_bkey_try_merge, and replacing a key
in the btree.
Signed-off-by: Nicholas Swenson <nks@daterainc.com>
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bcache/bset.c | 8 | ||||
| -rw-r--r-- | drivers/md/bcache/bset.h | 8 | ||||
| -rw-r--r-- | drivers/md/bcache/extents.c | 3 |
3 files changed, 11 insertions, 8 deletions
diff --git a/drivers/md/bcache/bset.c b/drivers/md/bcache/bset.c index 7f8a7bd21503..f990403c4f1c 100644 --- a/drivers/md/bcache/bset.c +++ b/drivers/md/bcache/bset.c @@ -788,12 +788,8 @@ bool bch_bkey_try_merge(struct btree_keys *b, struct bkey *l, struct bkey *r) * Assumes left and right are in order * Left and right must be exactly aligned */ - if (KEY_U64s(l) != KEY_U64s(r) || - KEY_DELETED(l) != KEY_DELETED(r) || - KEY_CACHED(l) != KEY_CACHED(r) || - KEY_VERSION(l) != KEY_VERSION(r) || - KEY_CSUM(l) != KEY_CSUM(r) || - bkey_cmp(l, &START_KEY(r))) + if (!bch_bkey_equal_header(l, r) || + bkey_cmp(l, &START_KEY(r))) return false; return b->ops->key_merge(b, l, r); diff --git a/drivers/md/bcache/bset.h b/drivers/md/bcache/bset.h index 487373057c09..003260f4ddf6 100644 --- a/drivers/md/bcache/bset.h +++ b/drivers/md/bcache/bset.h @@ -448,6 +448,14 @@ static inline void bch_bkey_to_text(struct btree_keys *b, char *buf, return b->ops->key_to_text(buf, size, k); } +static inline bool bch_bkey_equal_header(const struct bkey *l, + const struct bkey *r) +{ + return (KEY_DIRTY(l) == KEY_DIRTY(r) && + KEY_PTRS(l) == KEY_PTRS(r) && + KEY_CSUM(l) == KEY_CSUM(l)); +} + /* Keylists */ struct keylist { diff --git a/drivers/md/bcache/extents.c b/drivers/md/bcache/extents.c index 7d73d8625522..c3ead586dc27 100644 --- a/drivers/md/bcache/extents.c +++ b/drivers/md/bcache/extents.c @@ -372,8 +372,7 @@ static bool bch_extent_insert_fixup(struct btree_keys *b, if (KEY_START(k) > KEY_START(insert) + sectors_found) goto check_failed; - if (KEY_PTRS(k) != KEY_PTRS(replace_key) || - KEY_DIRTY(k) != KEY_DIRTY(replace_key)) + if (!bch_bkey_equal_header(k, replace_key)) goto check_failed; /* skip past gen */ |