diff options
Diffstat (limited to 'fs/erofs/compress.h')
| -rw-r--r-- | fs/erofs/compress.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/erofs/compress.h b/fs/erofs/compress.h index 4dadde18cdf1..aea129ddda74 100644 --- a/fs/erofs/compress.h +++ b/fs/erofs/compress.h @@ -28,11 +28,13 @@ struct z_erofs_decompress_req { /* some special page->private (unsigned long, see below) */ #define Z_EROFS_SHORTLIVED_PAGE (-1UL << 2) +#define Z_EROFS_PREALLOCATED_PAGE (-2UL << 2) /* * For all pages in a pcluster, page->private should be one of * Type Last 2bits page->private * short-lived page 00 Z_EROFS_SHORTLIVED_PAGE + * preallocated page (tryalloc) 00 Z_EROFS_PREALLOCATED_PAGE * cached/managed page 00 pointer to z_erofs_pcluster * online page (file-backed, 01/10/11 sub-index << 2 | count * some pages can be used for inplace I/O) @@ -40,6 +42,7 @@ struct z_erofs_decompress_req { * page->mapping should be one of * Type page->mapping * short-lived page NULL + * preallocated page NULL * cached/managed page non-NULL or NULL (invalidated/truncated page) * online page non-NULL * |