diff options
Diffstat (limited to 'fs/bcachefs/fifo.h')
| -rw-r--r-- | fs/bcachefs/fifo.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/fs/bcachefs/fifo.h b/fs/bcachefs/fifo.h index 789ae663bcbf..cdb272708a4b 100644 --- a/fs/bcachefs/fifo.h +++ b/fs/bcachefs/fifo.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _BCACHEFS_FIFO_H #define _BCACHEFS_FIFO_H @@ -12,7 +13,9 @@ struct { \ #define DECLARE_FIFO(type, name) FIFO(type) name #define fifo_buf_size(fifo) \ - (roundup_pow_of_two((fifo)->size) * sizeof((fifo)->data[0])) + ((fifo)->size \ + ? roundup_pow_of_two((fifo)->size) * sizeof((fifo)->data[0]) \ + : 0) #define init_fifo(fifo, _size, _gfp) \ ({ \ @@ -98,7 +101,7 @@ do { \ ({ \ bool _r = !fifo_empty((fifo)); \ if (_r) \ - (i) = (fifo)->data[--(fifo)->back & (fifo)->mask] \ + (i) = (fifo)->data[--(fifo)->back & (fifo)->mask]; \ _r; \ }) @@ -108,17 +111,17 @@ do { \ #define fifo_peek(fifo) fifo_peek_front(fifo) #define fifo_for_each_entry(_entry, _fifo, _iter) \ - for (((void) (&(_iter) == &(_fifo)->front)), \ - _iter = (_fifo)->front; \ + for (typecheck(typeof((_fifo)->front), _iter), \ + (_iter) = (_fifo)->front; \ ((_iter != (_fifo)->back) && \ (_entry = (_fifo)->data[(_iter) & (_fifo)->mask], true)); \ - _iter++) + (_iter)++) #define fifo_for_each_entry_ptr(_ptr, _fifo, _iter) \ - for (((void) (&(_iter) == &(_fifo)->front)), \ - _iter = (_fifo)->front; \ + for (typecheck(typeof((_fifo)->front), _iter), \ + (_iter) = (_fifo)->front; \ ((_iter != (_fifo)->back) && \ (_ptr = &(_fifo)->data[(_iter) & (_fifo)->mask], true)); \ - _iter++) + (_iter)++) #endif /* _BCACHEFS_FIFO_H */ |