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Message-ID: <20250716175859.345578-1-hsiangkao@linux.alibaba.com>
Date: Thu, 17 Jul 2025 01:58:59 +0800
From: Gao Xiang <hsiangkao@...ux.alibaba.com>
To: linux-erofs@...ts.ozlabs.org
Cc: LKML <linux-kernel@...r.kernel.org>,
Bo Liu <liubo03@...pur.com>,
Gao Xiang <hsiangkao@...ux.alibaba.com>
Subject: [PATCH v4 2/2] erofs: implement metadata compression
From: Bo Liu <liubo03@...pur.com>
Thanks to the meta buffer infrastructure, metadata-compressed inodes are
just read from the metabox inode instead of the blockdevice (or backing
file) inode.
The same is true for shared extended attributes.
Co-developed-by: Gao Xiang <hsiangkao@...ux.alibaba.com>
Signed-off-by: Bo Liu <liubo03@...pur.com>
Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>
---
changes since v3:
- add the missing sysfs part;
Documentation/ABI/testing/sysfs-fs-erofs | 2 +-
fs/erofs/data.c | 59 +++++++++++++++---------
fs/erofs/decompressor.c | 2 +-
fs/erofs/erofs_fs.h | 2 +-
fs/erofs/fileio.c | 2 +-
fs/erofs/inode.c | 5 +-
fs/erofs/internal.h | 17 +++++--
fs/erofs/super.c | 22 ++++++++-
fs/erofs/sysfs.c | 2 +
fs/erofs/xattr.c | 20 +++++---
fs/erofs/zdata.c | 5 +-
fs/erofs/zmap.c | 16 ++++---
12 files changed, 106 insertions(+), 48 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-fs-erofs b/Documentation/ABI/testing/sysfs-fs-erofs
index bf3b6299c15e..ad6d1a3ccd4e 100644
--- a/Documentation/ABI/testing/sysfs-fs-erofs
+++ b/Documentation/ABI/testing/sysfs-fs-erofs
@@ -5,7 +5,7 @@ Description: Shows all enabled kernel features.
Supported features:
zero_padding, compr_cfgs, big_pcluster, chunked_file,
device_table, compr_head2, sb_chksum, ztailpacking,
- dedupe, fragments.
+ dedupe, fragments, 48bit, metabox.
What: /sys/fs/erofs/<disk>/sync_decompress
Date: November 2021
diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 383c1337e157..f46c47335b9c 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -49,11 +49,18 @@ void *erofs_bread(struct erofs_buf *buf, erofs_off_t offset, bool need_kmap)
return buf->base + (offset & ~PAGE_MASK);
}
-void erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb)
+int erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb,
+ bool in_metabox)
{
struct erofs_sb_info *sbi = EROFS_SB(sb);
buf->file = NULL;
+ if (in_metabox) {
+ if (unlikely(!sbi->metabox_inode))
+ return -EFSCORRUPTED;
+ buf->mapping = sbi->metabox_inode->i_mapping;
+ return 0;
+ }
buf->off = sbi->dif0.fsoff;
if (erofs_is_fileio_mode(sbi)) {
buf->file = sbi->dif0.file; /* some fs like FUSE needs it */
@@ -62,12 +69,17 @@ void erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb)
buf->mapping = sbi->dif0.fscache->inode->i_mapping;
else
buf->mapping = sb->s_bdev->bd_mapping;
+ return 0;
}
void *erofs_read_metabuf(struct erofs_buf *buf, struct super_block *sb,
- erofs_off_t offset)
+ erofs_off_t offset, bool in_metabox)
{
- erofs_init_metabuf(buf, sb);
+ int err;
+
+ err = erofs_init_metabuf(buf, sb, in_metabox);
+ if (err)
+ return ERR_PTR(err);
return erofs_bread(buf, offset, true);
}
@@ -118,7 +130,7 @@ int erofs_map_blocks(struct inode *inode, struct erofs_map_blocks *map)
pos = ALIGN(erofs_iloc(inode) + vi->inode_isize +
vi->xattr_isize, unit) + unit * chunknr;
- idx = erofs_read_metabuf(&buf, sb, pos);
+ idx = erofs_read_metabuf(&buf, sb, pos, erofs_inode_in_metabox(inode));
if (IS_ERR(idx)) {
err = PTR_ERR(idx);
goto out;
@@ -264,7 +276,6 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
map.m_la = offset;
map.m_llen = length;
-
ret = erofs_map_blocks(inode, &map);
if (ret < 0)
return ret;
@@ -273,35 +284,37 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
iomap->length = map.m_llen;
iomap->flags = 0;
iomap->private = NULL;
+ iomap->addr = IOMAP_NULL_ADDR;
if (!(map.m_flags & EROFS_MAP_MAPPED)) {
iomap->type = IOMAP_HOLE;
- iomap->addr = IOMAP_NULL_ADDR;
return 0;
}
- mdev = (struct erofs_map_dev) {
- .m_deviceid = map.m_deviceid,
- .m_pa = map.m_pa,
- };
- ret = erofs_map_dev(sb, &mdev);
- if (ret)
- return ret;
-
- if (flags & IOMAP_DAX)
- iomap->dax_dev = mdev.m_dif->dax_dev;
- else
- iomap->bdev = mdev.m_bdev;
-
- iomap->addr = mdev.m_dif->fsoff + mdev.m_pa;
- if (flags & IOMAP_DAX)
- iomap->addr += mdev.m_dif->dax_part_off;
+ if (!(map.m_flags & EROFS_MAP_META) || !erofs_inode_in_metabox(inode)) {
+ mdev = (struct erofs_map_dev) {
+ .m_deviceid = map.m_deviceid,
+ .m_pa = map.m_pa,
+ };
+ ret = erofs_map_dev(sb, &mdev);
+ if (ret)
+ return ret;
+
+ if (flags & IOMAP_DAX)
+ iomap->dax_dev = mdev.m_dif->dax_dev;
+ else
+ iomap->bdev = mdev.m_bdev;
+ iomap->addr = mdev.m_dif->fsoff + mdev.m_pa;
+ if (flags & IOMAP_DAX)
+ iomap->addr += mdev.m_dif->dax_part_off;
+ }
if (map.m_flags & EROFS_MAP_META) {
void *ptr;
struct erofs_buf buf = __EROFS_BUF_INITIALIZER;
iomap->type = IOMAP_INLINE;
- ptr = erofs_read_metabuf(&buf, sb, mdev.m_pa);
+ ptr = erofs_read_metabuf(&buf, sb, map.m_pa,
+ erofs_inode_in_metabox(inode));
if (IS_ERR(ptr))
return PTR_ERR(ptr);
iomap->inline_data = ptr;
diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c
index 358061d7b660..354762c9723f 100644
--- a/fs/erofs/decompressor.c
+++ b/fs/erofs/decompressor.c
@@ -467,7 +467,7 @@ int z_erofs_parse_cfgs(struct super_block *sb, struct erofs_super_block *dsb)
return -EOPNOTSUPP;
}
- erofs_init_metabuf(&buf, sb);
+ (void)erofs_init_metabuf(&buf, sb, false);
offset = EROFS_SUPER_OFFSET + sbi->sb_size;
alg = 0;
for (algs = sbi->available_compr_algs; algs; algs >>= 1, ++alg) {
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h
index 0c9047e4a295..a61831a82a73 100644
--- a/fs/erofs/erofs_fs.h
+++ b/fs/erofs/erofs_fs.h
@@ -34,7 +34,7 @@
#define EROFS_FEATURE_INCOMPAT_48BIT 0x00000080
#define EROFS_FEATURE_INCOMPAT_METABOX 0x00000100
#define EROFS_ALL_FEATURE_INCOMPAT \
- ((EROFS_FEATURE_INCOMPAT_48BIT << 1) - 1)
+ ((EROFS_FEATURE_INCOMPAT_METABOX << 1) - 1)
#define EROFS_SB_EXTSLOT_SIZE 16
diff --git a/fs/erofs/fileio.c b/fs/erofs/fileio.c
index 3ee082476c8c..b7b3432a9882 100644
--- a/fs/erofs/fileio.c
+++ b/fs/erofs/fileio.c
@@ -115,7 +115,7 @@ static int erofs_fileio_scan_folio(struct erofs_fileio *io, struct folio *folio)
void *src;
src = erofs_read_metabuf(&buf, inode->i_sb,
- map->m_pa + ofs);
+ map->m_pa + ofs, erofs_inode_in_metabox(inode));
if (IS_ERR(src)) {
err = PTR_ERR(src);
break;
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index 47215c5e3385..045ccca6ab30 100644
--- a/fs/erofs/inode.c
+++ b/fs/erofs/inode.c
@@ -29,6 +29,7 @@ static int erofs_read_inode(struct inode *inode)
struct super_block *sb = inode->i_sb;
erofs_blk_t blkaddr = erofs_blknr(sb, erofs_iloc(inode));
unsigned int ofs = erofs_blkoff(sb, erofs_iloc(inode));
+ bool in_mbox = erofs_inode_in_metabox(inode);
struct erofs_buf buf = __EROFS_BUF_INITIALIZER;
struct erofs_sb_info *sbi = EROFS_SB(sb);
erofs_blk_t addrmask = BIT_ULL(48) - 1;
@@ -39,7 +40,7 @@ static int erofs_read_inode(struct inode *inode)
void *ptr;
int err = 0;
- ptr = erofs_read_metabuf(&buf, sb, erofs_pos(sb, blkaddr));
+ ptr = erofs_read_metabuf(&buf, sb, erofs_pos(sb, blkaddr), in_mbox);
if (IS_ERR(ptr)) {
err = PTR_ERR(ptr);
erofs_err(sb, "failed to read inode meta block (nid: %llu): %d",
@@ -78,7 +79,7 @@ static int erofs_read_inode(struct inode *inode)
memcpy(&copied, dic, gotten);
ptr = erofs_read_metabuf(&buf, sb,
- erofs_pos(sb, blkaddr + 1));
+ erofs_pos(sb, blkaddr + 1), in_mbox);
if (IS_ERR(ptr)) {
err = PTR_ERR(ptr);
erofs_err(sb, "failed to read inode payload block (nid: %llu): %d",
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index ad932f670bb6..a0e1b0b06d33 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -125,6 +125,7 @@ struct erofs_sb_info {
struct erofs_sb_lz4_info lz4;
#endif /* CONFIG_EROFS_FS_ZIP */
struct inode *packed_inode;
+ struct inode *metabox_inode;
struct erofs_dev_context *devs;
u64 total_blocks;
@@ -148,6 +149,7 @@ struct erofs_sb_info {
/* what we really care is nid, rather than ino.. */
erofs_nid_t root_nid;
erofs_nid_t packed_nid;
+ erofs_nid_t metabox_nid;
/* used for statfs, f_files - f_favail */
u64 inos;
@@ -281,12 +283,20 @@ struct erofs_inode {
#define EROFS_I(ptr) container_of(ptr, struct erofs_inode, vfs_inode)
+static inline bool erofs_inode_in_metabox(struct inode *inode)
+{
+ return EROFS_I(inode)->nid & BIT(EROFS_DIRENT_NID_METABOX_BIT);
+}
+
static inline erofs_off_t erofs_iloc(struct inode *inode)
{
struct erofs_sb_info *sbi = EROFS_I_SB(inode);
+ erofs_nid_t nid_lo = EROFS_I(inode)->nid & EROFS_DIRENT_NID_MASK;
+ if (erofs_inode_in_metabox(inode))
+ return nid_lo << sbi->islotbits;
return erofs_pos(inode->i_sb, sbi->meta_blkaddr) +
- (EROFS_I(inode)->nid << sbi->islotbits);
+ (nid_lo << sbi->islotbits);
}
static inline unsigned int erofs_inode_version(unsigned int ifmt)
@@ -385,9 +395,10 @@ void *erofs_read_metadata(struct super_block *sb, struct erofs_buf *buf,
void erofs_unmap_metabuf(struct erofs_buf *buf);
void erofs_put_metabuf(struct erofs_buf *buf);
void *erofs_bread(struct erofs_buf *buf, erofs_off_t offset, bool need_kmap);
-void erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb);
+int erofs_init_metabuf(struct erofs_buf *buf, struct super_block *sb,
+ bool in_metabox);
void *erofs_read_metabuf(struct erofs_buf *buf, struct super_block *sb,
- erofs_off_t offset);
+ erofs_off_t offset, bool in_metabox);
int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *dev);
int erofs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len);
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index bc27fa3bd678..539551cf59db 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -141,7 +141,7 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
struct erofs_deviceslot *dis;
struct file *file;
- dis = erofs_read_metabuf(buf, sb, *pos);
+ dis = erofs_read_metabuf(buf, sb, *pos, false);
if (IS_ERR(dis))
return PTR_ERR(dis);
@@ -258,7 +258,7 @@ static int erofs_read_superblock(struct super_block *sb)
void *data;
int ret;
- data = erofs_read_metabuf(&buf, sb, 0);
+ data = erofs_read_metabuf(&buf, sb, 0, false);
if (IS_ERR(data)) {
erofs_err(sb, "cannot read erofs superblock");
return PTR_ERR(data);
@@ -319,6 +319,14 @@ static int erofs_read_superblock(struct super_block *sb)
sbi->root_nid = le16_to_cpu(dsb->rb.rootnid_2b);
}
sbi->packed_nid = le64_to_cpu(dsb->packed_nid);
+ if (erofs_sb_has_metabox(sbi)) {
+ if (sbi->sb_size <= offsetof(struct erofs_super_block,
+ metabox_nid))
+ return -EFSCORRUPTED;
+ sbi->metabox_nid = le64_to_cpu(dsb->metabox_nid);
+ if (sbi->metabox_nid & BIT(EROFS_DIRENT_NID_METABOX_BIT))
+ return -EFSCORRUPTED; /* self-loop detection */
+ }
sbi->inos = le64_to_cpu(dsb->inos);
sbi->epoch = (s64)le64_to_cpu(dsb->epoch);
@@ -335,6 +343,8 @@ static int erofs_read_superblock(struct super_block *sb)
if (erofs_sb_has_48bit(sbi))
erofs_info(sb, "EXPERIMENTAL 48-bit layout support in use. Use at your own risk!");
+ if (erofs_sb_has_metabox(sbi))
+ erofs_info(sb, "EXPERIMENTAL metadata compression support in use. Use at your own risk!");
if (erofs_is_fscache_mode(sb))
erofs_info(sb, "[deprecated] fscache-based on-demand read feature in use. Use at your own risk!");
out:
@@ -690,6 +700,12 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc)
return PTR_ERR(inode);
sbi->packed_inode = inode;
}
+ if (erofs_sb_has_metabox(sbi)) {
+ inode = erofs_iget(sb, sbi->metabox_nid);
+ if (IS_ERR(inode))
+ return PTR_ERR(inode);
+ sbi->metabox_inode = inode;
+ }
inode = erofs_iget(sb, sbi->root_nid);
if (IS_ERR(inode))
@@ -845,6 +861,8 @@ static void erofs_drop_internal_inodes(struct erofs_sb_info *sbi)
{
iput(sbi->packed_inode);
sbi->packed_inode = NULL;
+ iput(sbi->metabox_inode);
+ sbi->metabox_inode = NULL;
#ifdef CONFIG_EROFS_FS_ZIP
iput(sbi->managed_cache);
sbi->managed_cache = NULL;
diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c
index eed8797a193f..a9fe35ba0906 100644
--- a/fs/erofs/sysfs.c
+++ b/fs/erofs/sysfs.c
@@ -95,6 +95,7 @@ EROFS_ATTR_FEATURE(ztailpacking);
EROFS_ATTR_FEATURE(fragments);
EROFS_ATTR_FEATURE(dedupe);
EROFS_ATTR_FEATURE(48bit);
+EROFS_ATTR_FEATURE(metabox);
static struct attribute *erofs_feat_attrs[] = {
ATTR_LIST(zero_padding),
@@ -108,6 +109,7 @@ static struct attribute *erofs_feat_attrs[] = {
ATTR_LIST(fragments),
ATTR_LIST(dedupe),
ATTR_LIST(48bit),
+ ATTR_LIST(metabox),
NULL,
};
ATTRIBUTE_GROUPS(erofs_feat);
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index 9cf84717a92e..6d2da6ad2be2 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -77,7 +77,9 @@ static int erofs_init_inode_xattrs(struct inode *inode)
}
it.buf = __EROFS_BUF_INITIALIZER;
- erofs_init_metabuf(&it.buf, sb);
+ ret = erofs_init_metabuf(&it.buf, sb, erofs_inode_in_metabox(inode));
+ if (ret)
+ goto out_unlock;
it.pos = erofs_iloc(inode) + vi->inode_isize;
/* read in shared xattr array (non-atomic, see kmalloc below) */
@@ -326,6 +328,9 @@ static int erofs_xattr_iter_inline(struct erofs_xattr_iter *it,
return -ENOATTR;
}
+ ret = erofs_init_metabuf(&it->buf, it->sb, erofs_inode_in_metabox(inode));
+ if (ret)
+ return ret;
remaining = vi->xattr_isize - xattr_header_sz;
it->pos = erofs_iloc(inode) + vi->inode_isize + xattr_header_sz;
@@ -362,7 +367,12 @@ static int erofs_xattr_iter_shared(struct erofs_xattr_iter *it,
struct super_block *const sb = it->sb;
struct erofs_sb_info *sbi = EROFS_SB(sb);
unsigned int i;
- int ret = -ENOATTR;
+ int ret;
+
+ ret = erofs_init_metabuf(&it->buf, sb,
+ erofs_sb_has_shared_ea_in_metabox(sbi));
+ if (ret)
+ return ret;
for (i = 0; i < vi->xattr_shared_count; ++i) {
it->pos = erofs_pos(sb, sbi->xattr_blkaddr) +
@@ -378,7 +388,7 @@ static int erofs_xattr_iter_shared(struct erofs_xattr_iter *it,
if ((getxattr && ret != -ENOATTR) || (!getxattr && ret))
break;
}
- return ret;
+ return i ? ret : -ENOATTR;
}
int erofs_getxattr(struct inode *inode, int index, const char *name,
@@ -413,7 +423,6 @@ int erofs_getxattr(struct inode *inode, int index, const char *name,
it.sb = inode->i_sb;
it.buf = __EROFS_BUF_INITIALIZER;
- erofs_init_metabuf(&it.buf, it.sb);
it.buffer = buffer;
it.buffer_size = buffer_size;
it.buffer_ofs = 0;
@@ -439,7 +448,6 @@ ssize_t erofs_listxattr(struct dentry *dentry, char *buffer, size_t buffer_size)
it.sb = dentry->d_sb;
it.buf = __EROFS_BUF_INITIALIZER;
- erofs_init_metabuf(&it.buf, it.sb);
it.dentry = dentry;
it.buffer = buffer;
it.buffer_size = buffer_size;
@@ -485,7 +493,7 @@ int erofs_xattr_prefixes_init(struct super_block *sb)
if (sbi->packed_inode)
buf.mapping = sbi->packed_inode->i_mapping;
else
- erofs_init_metabuf(&buf, sb);
+ (void)erofs_init_metabuf(&buf, sb, false);
for (i = 0; i < sbi->xattr_prefix_count; i++) {
void *ptr = erofs_read_metadata(sb, &buf, &pos, &len);
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 0d1ddd9b15de..792f20888a8f 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -855,7 +855,10 @@ static int z_erofs_pcluster_begin(struct z_erofs_frontend *fe)
/* bind cache first when cached decompression is preferred */
z_erofs_bind_cache(fe);
} else {
- erofs_init_metabuf(&map->buf, sb);
+ ret = erofs_init_metabuf(&map->buf, sb,
+ erofs_inode_in_metabox(fe->inode));
+ if (ret)
+ return ret;
ptr = erofs_bread(&map->buf, map->m_pa, false);
if (IS_ERR(ptr)) {
ret = PTR_ERR(ptr);
diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c
index b72a0e3f9362..a93efd95c555 100644
--- a/fs/erofs/zmap.c
+++ b/fs/erofs/zmap.c
@@ -17,7 +17,7 @@ struct z_erofs_maprecorder {
u16 delta[2];
erofs_blk_t pblk, compressedblks;
erofs_off_t nextpackoff;
- bool partialref;
+ bool partialref, in_mbox;
};
static int z_erofs_load_full_lcluster(struct z_erofs_maprecorder *m,
@@ -31,7 +31,7 @@ static int z_erofs_load_full_lcluster(struct z_erofs_maprecorder *m,
struct z_erofs_lcluster_index *di;
unsigned int advise;
- di = erofs_read_metabuf(&m->map->buf, inode->i_sb, pos);
+ di = erofs_read_metabuf(&m->map->buf, inode->i_sb, pos, m->in_mbox);
if (IS_ERR(di))
return PTR_ERR(di);
m->lcn = lcn;
@@ -146,7 +146,7 @@ static int z_erofs_load_compact_lcluster(struct z_erofs_maprecorder *m,
else
return -EOPNOTSUPP;
- in = erofs_read_metabuf(&m->map->buf, m->inode->i_sb, pos);
+ in = erofs_read_metabuf(&m->map->buf, inode->i_sb, pos, m->in_mbox);
if (IS_ERR(in))
return PTR_ERR(in);
@@ -392,6 +392,7 @@ static int z_erofs_map_blocks_fo(struct inode *inode,
struct z_erofs_maprecorder m = {
.inode = inode,
.map = map,
+ .in_mbox = erofs_inode_in_metabox(inode),
};
int err = 0;
unsigned int endoff, afmt;
@@ -521,6 +522,7 @@ static int z_erofs_map_blocks_ext(struct inode *inode,
unsigned int recsz = z_erofs_extent_recsize(vi->z_advise);
erofs_off_t pos = round_up(Z_EROFS_MAP_HEADER_END(erofs_iloc(inode) +
vi->inode_isize + vi->xattr_isize), recsz);
+ bool in_mbox = erofs_inode_in_metabox(inode);
erofs_off_t lend = inode->i_size;
erofs_off_t l, r, mid, pa, la, lstart;
struct z_erofs_extent *ext;
@@ -530,7 +532,7 @@ static int z_erofs_map_blocks_ext(struct inode *inode,
map->m_flags = 0;
if (recsz <= offsetof(struct z_erofs_extent, pstart_hi)) {
if (recsz <= offsetof(struct z_erofs_extent, pstart_lo)) {
- ext = erofs_read_metabuf(&map->buf, sb, pos);
+ ext = erofs_read_metabuf(&map->buf, sb, pos, in_mbox);
if (IS_ERR(ext))
return PTR_ERR(ext);
pa = le64_to_cpu(*(__le64 *)ext);
@@ -543,7 +545,7 @@ static int z_erofs_map_blocks_ext(struct inode *inode,
}
for (; lstart <= map->m_la; lstart += 1 << vi->z_lclusterbits) {
- ext = erofs_read_metabuf(&map->buf, sb, pos);
+ ext = erofs_read_metabuf(&map->buf, sb, pos, in_mbox);
if (IS_ERR(ext))
return PTR_ERR(ext);
map->m_plen = le32_to_cpu(ext->plen);
@@ -563,7 +565,7 @@ static int z_erofs_map_blocks_ext(struct inode *inode,
for (l = 0, r = vi->z_extents; l < r; ) {
mid = l + (r - l) / 2;
ext = erofs_read_metabuf(&map->buf, sb,
- pos + mid * recsz);
+ pos + mid * recsz, in_mbox);
if (IS_ERR(ext))
return PTR_ERR(ext);
@@ -645,7 +647,7 @@ static int z_erofs_fill_inode(struct inode *inode, struct erofs_map_blocks *map)
goto out_unlock;
pos = ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, 8);
- h = erofs_read_metabuf(&map->buf, sb, pos);
+ h = erofs_read_metabuf(&map->buf, sb, pos, erofs_inode_in_metabox(inode));
if (IS_ERR(h)) {
err = PTR_ERR(h);
goto out_unlock;
--
2.43.5
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