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FROMGIT: erofs: fix ztailpacking for subpage compressed blocks

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`pageofs_in` should be the compressed data offset of the page rather
than of the block.

Acked-by: Chao Yu <chao@kernel.org>
Reviewed-by: Yue Hu <huyue2@coolpad.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20231214161337.753049-1-hsiangkao@linux.alibaba.com

Bug: 318378021
Change-Id: I0997a69b22b0f42c327c810359f55f5fa6a76275
(cherry picked from commit e5aba911dee5e20fa82efbe13e0af8f38ea459e7
 https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev)
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
This commit is contained in:
Gao Xiang 2023-12-15 00:13:37 +08:00 committed by Treehugger Robot
parent 0c6a18c75b
commit a18efa4e4a
1 changed files with 1 additions and 1 deletions
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2
fs/erofs/zdata.c
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@ -820,7 +820,6 @@ static int z_erofs_register_pcluster(struct z_erofs_decompress_frontend *fe)
if (ztailpacking) {
pcl->obj.index = 0; /* which indicates ztailpacking */
pcl->pageofs_in = erofs_blkoff(fe->inode->i_sb, map->m_pa);
} else {
pcl->obj.index = erofs_blknr(sb, map->m_pa);
@ -897,6 +896,7 @@ static int z_erofs_pcluster_begin(struct z_erofs_decompress_frontend *fe)
}
get_page(map->buf.page);
WRITE_ONCE(fe->pcl->compressed_bvecs[0].page, map->buf.page);
fe->pcl->pageofs_in = map->m_pa & ~PAGE_MASK;
fe->mode = Z_EROFS_PCLUSTER_FOLLOWED_NOINPLACE;
}
/* file-backed inplace I/O pages are traversed in reverse order */