diff options
| author | Yue Hu <huyue2@yulong.com> | 2021-12-28 13:46:04 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2021-12-31 00:51:10 +0800 |
| commit | ab92184ff8f12979f3d3dd5ed601ed85770d81ba (patch) | |
| tree | 40b463add2daf8185d9317606644778ef0e8b20c /fs/erofs/super.c | |
| parent | cecf864d3d76d50e3d9c58145e286a0b8c284e92 (diff) | |
erofs: add on-disk compressed tail-packing inline support
Introduces erofs compressed tail-packing inline support.
This approach adds a new field called `h_idata_size' in the
per-file compression header to indicate the encoded size of
each tail-packing pcluster.
At runtime, it will find the start logical offset of the tail
pcluster when initializing per-inode zmap and record such
extent (headlcn, idataoff) information to the in-memory inode.
Therefore, follow-on requests can directly recognize if one
pcluster is a tail-packing inline pcluster or not.
Link: https://lore.kernel.org/r/20211228054604.114518-6-hsiangkao@linux.alibaba.com
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/super.c')
| -rw-r--r-- | fs/erofs/super.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 58f381f80205..0724ad5fd6cf 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -411,6 +411,9 @@ static int erofs_read_superblock(struct super_block *sb) /* handle multiple devices */ ret = erofs_init_devices(sb, dsb); + + if (erofs_sb_has_ztailpacking(sbi)) + erofs_info(sb, "EXPERIMENTAL compressed inline data feature in use. Use at your own risk!"); out: kunmap(page); put_page(page); |