diff options
Diffstat (limited to 'fs/bcachefs/util.h')
| -rw-r--r-- | fs/bcachefs/util.h | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/fs/bcachefs/util.h b/fs/bcachefs/util.h index fb02c1c36004..f4a4783219d9 100644 --- a/fs/bcachefs/util.h +++ b/fs/bcachefs/util.h @@ -55,6 +55,16 @@ static inline size_t buf_pages(void *p, size_t len) PAGE_SIZE); } +static inline void *bch2_kvmalloc(size_t n, gfp_t flags) +{ + void *p = unlikely(n >= INT_MAX) + ? vmalloc(n) + : kvmalloc(n, flags & ~__GFP_ZERO); + if (p && (flags & __GFP_ZERO)) + memset(p, 0, n); + return p; +} + #define init_heap(heap, _size, gfp) \ ({ \ (heap)->nr = 0; \ @@ -317,6 +327,19 @@ do { \ _ptr ? container_of(_ptr, type, member) : NULL; \ }) +static inline struct list_head *list_pop(struct list_head *head) +{ + if (list_empty(head)) + return NULL; + + struct list_head *ret = head->next; + list_del_init(ret); + return ret; +} + +#define list_pop_entry(head, type, member) \ + container_of_or_null(list_pop(head), type, member) + /* Does linear interpolation between powers of two */ static inline unsigned fract_exp_two(unsigned x, unsigned fract_bits) { @@ -378,7 +401,7 @@ do { \ _ret; \ }) -size_t bch2_rand_range(size_t); +u64 bch2_get_random_u64_below(u64); void memcpy_to_bio(struct bio *, struct bvec_iter, const void *); void memcpy_from_bio(void *, struct bio *, struct bvec_iter); @@ -647,8 +670,6 @@ static inline int cmp_le32(__le32 l, __le32 r) #include <linux/uuid.h> -#define QSTR(n) { { { .len = strlen(n) } }, .name = n } - static inline bool qstr_eq(const struct qstr l, const struct qstr r) { return l.len == r.len && !memcmp(l.name, r.name, l.len); @@ -696,4 +717,13 @@ static inline bool test_bit_le64(size_t bit, __le64 *addr) return (addr[bit / 64] & cpu_to_le64(BIT_ULL(bit % 64))) != 0; } +static inline void memcpy_swab(void *_dst, void *_src, size_t len) +{ + u8 *dst = _dst + len; + u8 *src = _src; + + while (len--) + *--dst = *src++; +} + #endif /* _BCACHEFS_UTIL_H */ |