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| author | Jingbo Xu <jefflexu@linux.alibaba.com> | 2023-04-08 06:28:08 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-04-17 01:15:53 +0800 |
| commit | 6a318ccd7e083729cbcdbd174d7070f6b7d24130 (patch) | |
| tree | af72523b2e79d248cb90f1f4da1bea6027e69f46 /fs/erofs/super.c | |
| parent | 82bc1ef41d275106a2b5288e4f5b0df19223066a (diff) | |
| download | lwn-6a318ccd7e083729cbcdbd174d7070f6b7d24130.tar.gz lwn-6a318ccd7e083729cbcdbd174d7070f6b7d24130.zip | |
erofs: enable long extended attribute name prefixes
Let's enable long xattr name prefix feature. Old kernels will just
ignore / skip such extended attributes. In addition, in case you
don't want to mount such images, add another incompatible feature as
an option for this.
Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Acked-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230407222808.19670-1-jefflexu@linux.alibaba.com
[ Gao Xiang: minor commit message fix. ]
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/super.c')
| -rw-r--r-- | fs/erofs/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/erofs/super.c b/fs/erofs/super.c index ddfb73b5a48e..811ab66d805e 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -385,6 +385,8 @@ static int erofs_read_superblock(struct super_block *sb) sbi->meta_blkaddr = le32_to_cpu(dsb->meta_blkaddr); #ifdef CONFIG_EROFS_FS_XATTR sbi->xattr_blkaddr = le32_to_cpu(dsb->xattr_blkaddr); + sbi->xattr_prefix_start = le32_to_cpu(dsb->xattr_prefix_start); + sbi->xattr_prefix_count = dsb->xattr_prefix_count; #endif sbi->islotbits = ilog2(sizeof(struct erofs_inode_compact)); sbi->root_nid = le16_to_cpu(dsb->root_nid); @@ -820,6 +822,10 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) if (err) return err; + err = erofs_xattr_prefixes_init(sb); + if (err) + return err; + err = erofs_register_sysfs(sb); if (err) return err; @@ -979,6 +985,7 @@ static void erofs_put_super(struct super_block *sb) erofs_unregister_sysfs(sb); erofs_shrinker_unregister(sb); + erofs_xattr_prefixes_cleanup(sb); #ifdef CONFIG_EROFS_FS_ZIP iput(sbi->managed_cache); sbi->managed_cache = NULL; |