diff options
Diffstat (limited to 'fs/erofs/internal.h')
| -rw-r--r-- | fs/erofs/internal.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index fca3747d97be..7053f1c4171d 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -251,6 +251,19 @@ static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp) #error erofs cannot be used in this platform #endif +enum erofs_kmap_type { + EROFS_NO_KMAP, /* don't map the buffer */ + EROFS_KMAP, /* use kmap() to map the buffer */ + EROFS_KMAP_ATOMIC, /* use kmap_atomic() to map the buffer */ +}; + +struct erofs_buf { + struct page *page; + void *base; + enum erofs_kmap_type kmap_type; +}; +#define __EROFS_BUF_INITIALIZER ((struct erofs_buf){ .page = NULL }) + #define ROOT_NID(sb) ((sb)->root_nid) #define erofs_blknr(addr) ((addr) / EROFS_BLKSIZ) |