diff options
| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-09-12 15:41:56 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2024-09-12 23:00:09 +0800 |
| commit | 7c3ca1838a7831855cbf2e6927a10e0e4723edf6 (patch) | |
| tree | ecdcfadd129552f99178ced9ef11a890bdaa63c3 /fs/erofs/erofs_fs.h | |
| parent | 79f504a2cd3c0b7d953d0015618a2a41559a2cfd (diff) | |
erofs: restrict pcluster size limitations
Error out if {en,de}encoded size of a pcluster is unsupported:
Maximum supported encoded size (of a pcluster): 1 MiB
Maximum supported decoded size (of a pcluster): 12 MiB
Users can still choose to use supported large configurations (e.g.,
for archival purposes), but there may be performance penalties in
low-memory scenarios compared to smaller pclusters.
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240912074156.2925394-1-hsiangkao@linux.alibaba.com
Diffstat (limited to 'fs/erofs/erofs_fs.h')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 6c0c270c42e1..c8f2ae845bd2 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -288,9 +288,12 @@ struct erofs_dirent { #define EROFS_NAME_LEN 255 -/* maximum supported size of a physical compression cluster */ +/* maximum supported encoded size of a physical compressed cluster */ #define Z_EROFS_PCLUSTER_MAX_SIZE (1024 * 1024) +/* maximum supported decoded size of a physical compressed cluster */ +#define Z_EROFS_PCLUSTER_MAX_DSIZE (12 * 1024 * 1024) + /* available compression algorithm types (for h_algorithmtype) */ enum { Z_EROFS_COMPRESSION_LZ4 = 0, |