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| author | Yue Hu <huyue2@coolpad.com> | 2022-09-23 10:11:22 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-09-26 23:55:39 +0800 |
| commit | b15b2e307c3a1970d92da77a3ef57ee53d119d8e (patch) | |
| tree | e2fdea78f65addf0eb8af1abc4f3746897eddee1 /fs/erofs/sysfs.c | |
| parent | fdffc091e6f94602558bba712b51bc16f79fd6d5 (diff) | |
| download | linux-b15b2e307c3a1970d92da77a3ef57ee53d119d8e.tar.gz linux-b15b2e307c3a1970d92da77a3ef57ee53d119d8e.tar.bz2 linux-b15b2e307c3a1970d92da77a3ef57ee53d119d8e.zip | |
erofs: support on-disk compressed fragments data
Introduce on-disk compressed fragments data feature.
This approach adds a new field called `h_fragmentoff' in the per-file
compression header to indicate the fragment offset of each tail pcluster
or the whole file in the special packed inode.
Similar to ztailpacking, it will also find and record the 'headlcn'
of the tail pcluster when initializing per-inode zmap for making
follow-on requests more easy.
Signed-off-by: Yue Hu <huyue2@coolpad.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/YzHKxcFTlHGgXeH9@B-P7TQMD6M-0146.local
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/sysfs.c')
| -rw-r--r-- | fs/erofs/sysfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c index 341fb43ad587..dd6eb7eccf9a 100644 --- a/fs/erofs/sysfs.c +++ b/fs/erofs/sysfs.c @@ -76,6 +76,7 @@ EROFS_ATTR_FEATURE(device_table); EROFS_ATTR_FEATURE(compr_head2); EROFS_ATTR_FEATURE(sb_chksum); EROFS_ATTR_FEATURE(ztailpacking); +EROFS_ATTR_FEATURE(fragments); static struct attribute *erofs_feat_attrs[] = { ATTR_LIST(zero_padding), @@ -86,6 +87,7 @@ static struct attribute *erofs_feat_attrs[] = { ATTR_LIST(compr_head2), ATTR_LIST(sb_chksum), ATTR_LIST(ztailpacking), + ATTR_LIST(fragments), NULL, }; ATTRIBUTE_GROUPS(erofs_feat); |