diff options
| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-04-07 17:17:04 +0300 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2023-04-16 20:15:50 +0300 |
| commit | eb2c5e41be1495cf7a20ff49df473b1c45b82e77 (patch) | |
| tree | 939ee6fc72404440e86150d19e797acbcc1e7d3b /fs/erofs/data.c | |
| parent | cb9bce79514392a9a216ff67148e05e2d72c28bd (diff) | |
| download | linux-eb2c5e41be1495cf7a20ff49df473b1c45b82e77.tar.xz | |
erofs: keep meta inode into erofs_buf
So that erofs_read_metadata() can read metadata from other inodes
(e.g. packed inode) as well.
Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Acked-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20230407141710.113882-2-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/data.c')
| -rw-r--r-- | fs/erofs/data.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/erofs/data.c b/fs/erofs/data.c index 03c6ffdfcbfb..6fe9a779fa91 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -31,11 +31,11 @@ void erofs_put_metabuf(struct erofs_buf *buf) * Derive the block size from inode->i_blkbits to make compatible with * anonymous inode in fscache mode. */ -void *erofs_bread(struct erofs_buf *buf, struct inode *inode, - erofs_blk_t blkaddr, enum erofs_kmap_type type) +void *erofs_bread(struct erofs_buf *buf, erofs_blk_t blkaddr, + enum erofs_kmap_type type) { + struct inode *inode = buf->inode; erofs_off_t offset = (erofs_off_t)blkaddr << inode->i_blkbits; - struct address_space *const mapping = inode->i_mapping; pgoff_t index = offset >> PAGE_SHIFT; struct page *page = buf->page; struct folio *folio; @@ -45,7 +45,7 @@ void *erofs_bread(struct erofs_buf *buf, struct inode *inode, erofs_put_metabuf(buf); nofs_flag = memalloc_nofs_save(); - folio = read_cache_folio(mapping, index, NULL, NULL); + folio = read_cache_folio(inode->i_mapping, index, NULL, NULL); memalloc_nofs_restore(nofs_flag); if (IS_ERR(folio)) return folio; @@ -67,14 +67,19 @@ void *erofs_bread(struct erofs_buf *buf, struct inode *inode, return buf->base + (offset & ~PAGE_MASK); } -void *erofs_read_metabuf(struct erofs_buf *buf, struct super_block *sb, - erofs_blk_t blkaddr, enum erofs_kmap_type type) +void erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb) { if (erofs_is_fscache_mode(sb)) - return erofs_bread(buf, EROFS_SB(sb)->s_fscache->inode, - blkaddr, type); + buf->inode = EROFS_SB(sb)->s_fscache->inode; + else + buf->inode = sb->s_bdev->bd_inode; +} - return erofs_bread(buf, sb->s_bdev->bd_inode, blkaddr, type); +void *erofs_read_metabuf(struct erofs_buf *buf, struct super_block *sb, + erofs_blk_t blkaddr, enum erofs_kmap_type type) +{ + erofs_init_metabuf(buf, sb); + return erofs_bread(buf, blkaddr, type); } static int erofs_map_blocks_flatmode(struct inode *inode, |