commit 4efdec36dc9907628e590a68193d6d8e5e74d032 upstream.
erofs_inode_datablocks() has the only one caller, let's just get rid of it entirely. No logic changes.
Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Chao Yu chao@kernel.org Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") Link: https://lore.kernel.org/r/20230204093040.97967-1-hsiangkao@linux.alibaba.com [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com --- Obsoleted EROFS_BLKSIZ impedes efforts to backport 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") 9e2f9d34dd12 ("erofs: handle overlapped pclusters out of crafted images properly")
To avoid further bugfix conflicts due to random EROFS_BLKSIZs around the whole codebase, just backport the dependencies for 6.1.y.
fs/erofs/internal.h | 6 ------ fs/erofs/namei.c | 18 +++++------------- 2 files changed, 5 insertions(+), 19 deletions(-)
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 79a7a5815ea6..30d464230ae0 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -347,12 +347,6 @@ static inline erofs_off_t erofs_iloc(struct inode *inode) (EROFS_I(inode)->nid << sbi->islotbits); }
-static inline unsigned long erofs_inode_datablocks(struct inode *inode) -{ - /* since i_size cannot be changed */ - return DIV_ROUND_UP(inode->i_size, EROFS_BLKSIZ); -} - static inline unsigned int erofs_bitrange(unsigned int value, unsigned int bit, unsigned int bits) { diff --git a/fs/erofs/namei.c b/fs/erofs/namei.c index e8ccaa761bd6..642431350bea 100644 --- a/fs/erofs/namei.c +++ b/fs/erofs/namei.c @@ -5,7 +5,6 @@ * Copyright (C) 2022, Alibaba Cloud */ #include "xattr.h" - #include <trace/events/erofs.h>
struct erofs_qstr { @@ -87,19 +86,13 @@ static struct erofs_dirent *find_target_dirent(struct erofs_qstr *name, return ERR_PTR(-ENOENT); }
-static void *find_target_block_classic(struct erofs_buf *target, - struct inode *dir, - struct erofs_qstr *name, - int *_ndirents) +static void *erofs_find_target_block(struct erofs_buf *target, + struct inode *dir, struct erofs_qstr *name, int *_ndirents) { - unsigned int startprfx, endprfx; - int head, back; + int head = 0, back = DIV_ROUND_UP(dir->i_size, EROFS_BLKSIZ) - 1; + unsigned int startprfx = 0, endprfx = 0; void *candidate = ERR_PTR(-ENOENT);
- startprfx = endprfx = 0; - head = 0; - back = erofs_inode_datablocks(dir) - 1; - while (head <= back) { const int mid = head + (back - head) / 2; struct erofs_buf buf = __EROFS_BUF_INITIALIZER; @@ -180,8 +173,7 @@ int erofs_namei(struct inode *dir, const struct qstr *name, erofs_nid_t *nid, qn.end = name->name + name->len;
ndirents = 0; - - de = find_target_block_classic(&buf, dir, &qn, &ndirents); + de = erofs_find_target_block(&buf, dir, &qn, &ndirents); if (IS_ERR(de)) return PTR_ERR(de);
commit 999f2f9a63f475192d837a2b8595eb0962984d21 upstream.
The code can be neater without forward declarations. Let's get rid of z_erofs_do_map_blocks() forward declaration.
Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Chao Yu chao@kernel.org Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") Link: https://lore.kernel.org/r/20230204093040.97967-5-hsiangkao@linux.alibaba.com [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com --- fs/erofs/zmap.c | 242 ++++++++++++++++++++++++------------------------ 1 file changed, 119 insertions(+), 123 deletions(-)
diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index 4864863cd129..5d1a7aff2d70 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -7,10 +7,6 @@ #include <asm/unaligned.h> #include <trace/events/erofs.h>
-static int z_erofs_do_map_blocks(struct inode *inode, - struct erofs_map_blocks *map, - int flags); - int z_erofs_fill_inode(struct inode *inode) { struct erofs_inode *const vi = EROFS_I(inode); @@ -29,125 +25,6 @@ int z_erofs_fill_inode(struct inode *inode) return 0; }
-static int z_erofs_fill_inode_lazy(struct inode *inode) -{ - struct erofs_inode *const vi = EROFS_I(inode); - struct super_block *const sb = inode->i_sb; - int err, headnr; - erofs_off_t pos; - struct erofs_buf buf = __EROFS_BUF_INITIALIZER; - void *kaddr; - struct z_erofs_map_header *h; - - if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) { - /* - * paired with smp_mb() at the end of the function to ensure - * fields will only be observed after the bit is set. - */ - smp_mb(); - return 0; - } - - if (wait_on_bit_lock(&vi->flags, EROFS_I_BL_Z_BIT, TASK_KILLABLE)) - return -ERESTARTSYS; - - err = 0; - if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) - goto out_unlock; - - pos = ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, 8); - kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(pos), EROFS_KMAP); - if (IS_ERR(kaddr)) { - err = PTR_ERR(kaddr); - goto out_unlock; - } - - h = kaddr + erofs_blkoff(pos); - /* - * if the highest bit of the 8-byte map header is set, the whole file - * is stored in the packed inode. The rest bits keeps z_fragmentoff. - */ - if (h->h_clusterbits >> Z_EROFS_FRAGMENT_INODE_BIT) { - vi->z_advise = Z_EROFS_ADVISE_FRAGMENT_PCLUSTER; - vi->z_fragmentoff = le64_to_cpu(*(__le64 *)h) ^ (1ULL << 63); - vi->z_tailextent_headlcn = 0; - goto done; - } - vi->z_advise = le16_to_cpu(h->h_advise); - vi->z_algorithmtype[0] = h->h_algorithmtype & 15; - vi->z_algorithmtype[1] = h->h_algorithmtype >> 4; - - headnr = 0; - if (vi->z_algorithmtype[0] >= Z_EROFS_COMPRESSION_MAX || - vi->z_algorithmtype[++headnr] >= Z_EROFS_COMPRESSION_MAX) { - erofs_err(sb, "unknown HEAD%u format %u for nid %llu, please upgrade kernel", - headnr + 1, vi->z_algorithmtype[headnr], vi->nid); - err = -EOPNOTSUPP; - goto out_put_metabuf; - } - - vi->z_logical_clusterbits = LOG_BLOCK_SIZE + (h->h_clusterbits & 7); - if (!erofs_sb_has_big_pcluster(EROFS_SB(sb)) && - vi->z_advise & (Z_EROFS_ADVISE_BIG_PCLUSTER_1 | - Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { - erofs_err(sb, "per-inode big pcluster without sb feature for nid %llu", - vi->nid); - err = -EFSCORRUPTED; - goto out_put_metabuf; - } - if (vi->datalayout == EROFS_INODE_FLAT_COMPRESSION && - !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_1) ^ - !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { - erofs_err(sb, "big pcluster head1/2 of compact indexes should be consistent for nid %llu", - vi->nid); - err = -EFSCORRUPTED; - goto out_put_metabuf; - } - - if (vi->z_advise & Z_EROFS_ADVISE_INLINE_PCLUSTER) { - struct erofs_map_blocks map = { - .buf = __EROFS_BUF_INITIALIZER - }; - - vi->z_idata_size = le16_to_cpu(h->h_idata_size); - err = z_erofs_do_map_blocks(inode, &map, - EROFS_GET_BLOCKS_FINDTAIL); - erofs_put_metabuf(&map.buf); - - if (!map.m_plen || - erofs_blkoff(map.m_pa) + map.m_plen > EROFS_BLKSIZ) { - erofs_err(sb, "invalid tail-packing pclustersize %llu", - map.m_plen); - err = -EFSCORRUPTED; - } - if (err < 0) - goto out_put_metabuf; - } - - if (vi->z_advise & Z_EROFS_ADVISE_FRAGMENT_PCLUSTER && - !(h->h_clusterbits >> Z_EROFS_FRAGMENT_INODE_BIT)) { - struct erofs_map_blocks map = { - .buf = __EROFS_BUF_INITIALIZER - }; - - vi->z_fragmentoff = le32_to_cpu(h->h_fragmentoff); - err = z_erofs_do_map_blocks(inode, &map, - EROFS_GET_BLOCKS_FINDTAIL); - erofs_put_metabuf(&map.buf); - if (err < 0) - goto out_put_metabuf; - } -done: - /* paired with smp_mb() at the beginning of the function */ - smp_mb(); - set_bit(EROFS_I_Z_INITED_BIT, &vi->flags); -out_put_metabuf: - erofs_put_metabuf(&buf); -out_unlock: - clear_and_wake_up_bit(EROFS_I_BL_Z_BIT, &vi->flags); - return err; -} - struct z_erofs_maprecorder { struct inode *inode; struct erofs_map_blocks *map; @@ -732,6 +609,125 @@ static int z_erofs_do_map_blocks(struct inode *inode, return err; }
+static int z_erofs_fill_inode_lazy(struct inode *inode) +{ + struct erofs_inode *const vi = EROFS_I(inode); + struct super_block *const sb = inode->i_sb; + int err, headnr; + erofs_off_t pos; + struct erofs_buf buf = __EROFS_BUF_INITIALIZER; + void *kaddr; + struct z_erofs_map_header *h; + + if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) { + /* + * paired with smp_mb() at the end of the function to ensure + * fields will only be observed after the bit is set. + */ + smp_mb(); + return 0; + } + + if (wait_on_bit_lock(&vi->flags, EROFS_I_BL_Z_BIT, TASK_KILLABLE)) + return -ERESTARTSYS; + + err = 0; + if (test_bit(EROFS_I_Z_INITED_BIT, &vi->flags)) + goto out_unlock; + + pos = ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, 8); + kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(pos), EROFS_KMAP); + if (IS_ERR(kaddr)) { + err = PTR_ERR(kaddr); + goto out_unlock; + } + + h = kaddr + erofs_blkoff(pos); + /* + * if the highest bit of the 8-byte map header is set, the whole file + * is stored in the packed inode. The rest bits keeps z_fragmentoff. + */ + if (h->h_clusterbits >> Z_EROFS_FRAGMENT_INODE_BIT) { + vi->z_advise = Z_EROFS_ADVISE_FRAGMENT_PCLUSTER; + vi->z_fragmentoff = le64_to_cpu(*(__le64 *)h) ^ (1ULL << 63); + vi->z_tailextent_headlcn = 0; + goto done; + } + vi->z_advise = le16_to_cpu(h->h_advise); + vi->z_algorithmtype[0] = h->h_algorithmtype & 15; + vi->z_algorithmtype[1] = h->h_algorithmtype >> 4; + + headnr = 0; + if (vi->z_algorithmtype[0] >= Z_EROFS_COMPRESSION_MAX || + vi->z_algorithmtype[++headnr] >= Z_EROFS_COMPRESSION_MAX) { + erofs_err(sb, "unknown HEAD%u format %u for nid %llu, please upgrade kernel", + headnr + 1, vi->z_algorithmtype[headnr], vi->nid); + err = -EOPNOTSUPP; + goto out_put_metabuf; + } + + vi->z_logical_clusterbits = LOG_BLOCK_SIZE + (h->h_clusterbits & 7); + if (!erofs_sb_has_big_pcluster(EROFS_SB(sb)) && + vi->z_advise & (Z_EROFS_ADVISE_BIG_PCLUSTER_1 | + Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { + erofs_err(sb, "per-inode big pcluster without sb feature for nid %llu", + vi->nid); + err = -EFSCORRUPTED; + goto out_put_metabuf; + } + if (vi->datalayout == EROFS_INODE_FLAT_COMPRESSION && + !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_1) ^ + !(vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { + erofs_err(sb, "big pcluster head1/2 of compact indexes should be consistent for nid %llu", + vi->nid); + err = -EFSCORRUPTED; + goto out_put_metabuf; + } + + if (vi->z_advise & Z_EROFS_ADVISE_INLINE_PCLUSTER) { + struct erofs_map_blocks map = { + .buf = __EROFS_BUF_INITIALIZER + }; + + vi->z_idata_size = le16_to_cpu(h->h_idata_size); + err = z_erofs_do_map_blocks(inode, &map, + EROFS_GET_BLOCKS_FINDTAIL); + erofs_put_metabuf(&map.buf); + + if (!map.m_plen || + erofs_blkoff(map.m_pa) + map.m_plen > EROFS_BLKSIZ) { + erofs_err(sb, "invalid tail-packing pclustersize %llu", + map.m_plen); + err = -EFSCORRUPTED; + } + if (err < 0) + goto out_put_metabuf; + } + + if (vi->z_advise & Z_EROFS_ADVISE_FRAGMENT_PCLUSTER && + !(h->h_clusterbits >> Z_EROFS_FRAGMENT_INODE_BIT)) { + struct erofs_map_blocks map = { + .buf = __EROFS_BUF_INITIALIZER + }; + + vi->z_fragmentoff = le32_to_cpu(h->h_fragmentoff); + err = z_erofs_do_map_blocks(inode, &map, + EROFS_GET_BLOCKS_FINDTAIL); + erofs_put_metabuf(&map.buf); + if (err < 0) + goto out_put_metabuf; + } +done: + /* paired with smp_mb() at the beginning of the function */ + smp_mb(); + set_bit(EROFS_I_Z_INITED_BIT, &vi->flags); +out_put_metabuf: + erofs_put_metabuf(&buf); +out_unlock: + clear_and_wake_up_bit(EROFS_I_BL_Z_BIT, &vi->flags); + return err; +} + int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map, int flags) {
From: Jingbo Xu jefflexu@linux.alibaba.com
commit 3acea5fc335420ba7ef53947cf2d98d07fac39f7 upstream.
As the first step of converting hardcoded blocksize to that specified in on-disk superblock, convert all call sites of hardcoded blocksize to sb->s_blocksize except for:
1) use sbi->blkszbits instead of sb->s_blocksize in erofs_superblock_csum_verify() since sb->s_blocksize has not been updated with the on-disk blocksize yet when the function is called.
2) use inode->i_blkbits instead of sb->s_blocksize in erofs_bread(), since the inode operated on may be an anonymous inode in fscache mode. Currently the anonymous inode is allocated from an anonymous mount maintained in erofs, while in the near future we may allocate anonymous inodes from a generic API directly and thus have no access to the anonymous inode's i_sb. Thus we keep the block size in i_blkbits for anonymous inodes in fscache mode.
Be noted that this patch only gets rid of the hardcoded blocksize, in preparation for actually setting the on-disk block size in the following patch. The hard limit of constraining the block size to PAGE_SIZE still exists until the next patch.
Signed-off-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Gao Xiang hsiangkao@linux.alibaba.com Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Chao Yu chao@kernel.org Link: https://lore.kernel.org/r/20230313135309.75269-2-jefflexu@linux.alibaba.com [ Gao Xiang: fold a patch to fix incorrect truncated offsets. ] Link: https://lore.kernel.org/r/20230413035734.15457-1-zhujia.zj@bytedance.com Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com --- fs/erofs/data.c | 50 +++++++++++++++++++----------------- fs/erofs/decompressor.c | 6 ++--- fs/erofs/decompressor_lzma.c | 4 +-- fs/erofs/dir.c | 22 ++++++++-------- fs/erofs/fscache.c | 7 ++--- fs/erofs/inode.c | 20 ++++++++------- fs/erofs/internal.h | 20 +++++---------- fs/erofs/namei.c | 14 +++++----- fs/erofs/super.c | 27 +++++++++++-------- fs/erofs/xattr.c | 40 ++++++++++++++--------------- fs/erofs/xattr.h | 10 ++++---- fs/erofs/zdata.c | 16 +++++++----- fs/erofs/zmap.c | 29 +++++++++++---------- include/trace/events/erofs.h | 4 +-- 14 files changed, 137 insertions(+), 132 deletions(-)
diff --git a/fs/erofs/data.c b/fs/erofs/data.c index 9d20e5d23ae0..5c2e6fbb70a3 100644 --- a/fs/erofs/data.c +++ b/fs/erofs/data.c @@ -29,11 +29,15 @@ void erofs_put_metabuf(struct erofs_buf *buf) buf->page = NULL; }
+/* + * 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) { + erofs_off_t offset = (erofs_off_t)blkaddr << inode->i_blkbits; struct address_space *const mapping = inode->i_mapping; - erofs_off_t offset = blknr_to_addr(blkaddr); pgoff_t index = offset >> PAGE_SHIFT; struct page *page = buf->page; struct folio *folio; @@ -84,33 +88,32 @@ static int erofs_map_blocks_flatmode(struct inode *inode, erofs_blk_t nblocks, lastblk; u64 offset = map->m_la; struct erofs_inode *vi = EROFS_I(inode); + struct super_block *sb = inode->i_sb; bool tailendpacking = (vi->datalayout == EROFS_INODE_FLAT_INLINE);
- nblocks = DIV_ROUND_UP(inode->i_size, EROFS_BLKSIZ); + nblocks = erofs_iblks(inode); lastblk = nblocks - tailendpacking;
/* there is no hole in flatmode */ map->m_flags = EROFS_MAP_MAPPED; - if (offset < blknr_to_addr(lastblk)) { - map->m_pa = blknr_to_addr(vi->raw_blkaddr) + map->m_la; - map->m_plen = blknr_to_addr(lastblk) - offset; + if (offset < erofs_pos(sb, lastblk)) { + map->m_pa = erofs_pos(sb, vi->raw_blkaddr) + map->m_la; + map->m_plen = erofs_pos(sb, lastblk) - offset; } else if (tailendpacking) { map->m_pa = erofs_iloc(inode) + vi->inode_isize + - vi->xattr_isize + erofs_blkoff(offset); + vi->xattr_isize + erofs_blkoff(sb, offset); map->m_plen = inode->i_size - offset;
/* inline data should be located in the same meta block */ - if (erofs_blkoff(map->m_pa) + map->m_plen > EROFS_BLKSIZ) { - erofs_err(inode->i_sb, - "inline data cross block boundary @ nid %llu", + if (erofs_blkoff(sb, map->m_pa) + map->m_plen > sb->s_blocksize) { + erofs_err(sb, "inline data cross block boundary @ nid %llu", vi->nid); DBG_BUGON(1); return -EFSCORRUPTED; } map->m_flags |= EROFS_MAP_META; } else { - erofs_err(inode->i_sb, - "internal error @ nid: %llu (size %llu), m_la 0x%llx", + erofs_err(sb, "internal error @ nid: %llu (size %llu), m_la 0x%llx", vi->nid, inode->i_size, map->m_la); DBG_BUGON(1); return -EIO; @@ -154,29 +157,29 @@ int erofs_map_blocks(struct inode *inode, pos = ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, unit) + unit * chunknr;
- kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(pos), EROFS_KMAP); + kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(sb, pos), EROFS_KMAP); if (IS_ERR(kaddr)) { err = PTR_ERR(kaddr); goto out; } map->m_la = chunknr << vi->chunkbits; map->m_plen = min_t(erofs_off_t, 1UL << vi->chunkbits, - roundup(inode->i_size - map->m_la, EROFS_BLKSIZ)); + round_up(inode->i_size - map->m_la, sb->s_blocksize));
/* handle block map */ if (!(vi->chunkformat & EROFS_CHUNK_FORMAT_INDEXES)) { - __le32 *blkaddr = kaddr + erofs_blkoff(pos); + __le32 *blkaddr = kaddr + erofs_blkoff(sb, pos);
if (le32_to_cpu(*blkaddr) == EROFS_NULL_ADDR) { map->m_flags = 0; } else { - map->m_pa = blknr_to_addr(le32_to_cpu(*blkaddr)); + map->m_pa = erofs_pos(sb, le32_to_cpu(*blkaddr)); map->m_flags = EROFS_MAP_MAPPED; } goto out_unlock; } /* parse chunk indexes */ - idx = kaddr + erofs_blkoff(pos); + idx = kaddr + erofs_blkoff(sb, pos); switch (le32_to_cpu(idx->blkaddr)) { case EROFS_NULL_ADDR: map->m_flags = 0; @@ -184,7 +187,7 @@ int erofs_map_blocks(struct inode *inode, default: map->m_deviceid = le16_to_cpu(idx->device_id) & EROFS_SB(sb)->device_id_mask; - map->m_pa = blknr_to_addr(le32_to_cpu(idx->blkaddr)); + map->m_pa = erofs_pos(sb, le32_to_cpu(idx->blkaddr)); map->m_flags = EROFS_MAP_MAPPED; break; } @@ -228,8 +231,8 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
if (!dif->mapped_blkaddr) continue; - startoff = blknr_to_addr(dif->mapped_blkaddr); - length = blknr_to_addr(dif->blocks); + startoff = erofs_pos(sb, dif->mapped_blkaddr); + length = erofs_pos(sb, dif->blocks);
if (map->m_pa >= startoff && map->m_pa < startoff + length) { @@ -250,6 +253,7 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, unsigned int flags, struct iomap *iomap, struct iomap *srcmap) { int ret; + struct super_block *sb = inode->i_sb; struct erofs_map_blocks map; struct erofs_map_dev mdev;
@@ -264,7 +268,7 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, .m_deviceid = map.m_deviceid, .m_pa = map.m_pa, }; - ret = erofs_map_dev(inode->i_sb, &mdev); + ret = erofs_map_dev(sb, &mdev); if (ret) return ret;
@@ -290,11 +294,11 @@ static int erofs_iomap_begin(struct inode *inode, loff_t offset, loff_t length, struct erofs_buf buf = __EROFS_BUF_INITIALIZER;
iomap->type = IOMAP_INLINE; - ptr = erofs_read_metabuf(&buf, inode->i_sb, - erofs_blknr(mdev.m_pa), EROFS_KMAP); + ptr = erofs_read_metabuf(&buf, sb, + erofs_blknr(sb, mdev.m_pa), EROFS_KMAP); if (IS_ERR(ptr)) return PTR_ERR(ptr); - iomap->inline_data = ptr + erofs_blkoff(mdev.m_pa); + iomap->inline_data = ptr + erofs_blkoff(sb, mdev.m_pa); iomap->private = buf.base; } else { iomap->type = IOMAP_MAPPED; diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c index 708bf142b188..0eaa9e495346 100644 --- a/fs/erofs/decompressor.c +++ b/fs/erofs/decompressor.c @@ -42,7 +42,7 @@ static int z_erofs_load_lz4_config(struct super_block *sb, if (!sbi->lz4.max_pclusterblks) { sbi->lz4.max_pclusterblks = 1; /* reserved case */ } else if (sbi->lz4.max_pclusterblks > - Z_EROFS_PCLUSTER_MAX_SIZE / EROFS_BLKSIZ) { + erofs_blknr(sb, Z_EROFS_PCLUSTER_MAX_SIZE)) { erofs_err(sb, "too large lz4 pclusterblks %u", sbi->lz4.max_pclusterblks); return -EINVAL; @@ -221,13 +221,13 @@ static int z_erofs_lz4_decompress_mem(struct z_erofs_lz4_decompress_ctx *ctx, support_0padding = true; ret = z_erofs_fixup_insize(rq, headpage + rq->pageofs_in, min_t(unsigned int, rq->inputsize, - EROFS_BLKSIZ - rq->pageofs_in)); + rq->sb->s_blocksize - rq->pageofs_in)); if (ret) { kunmap_local(headpage); return ret; } may_inplace = !((rq->pageofs_in + rq->inputsize) & - (EROFS_BLKSIZ - 1)); + (rq->sb->s_blocksize - 1)); }
inputmargin = rq->pageofs_in; diff --git a/fs/erofs/decompressor_lzma.c b/fs/erofs/decompressor_lzma.c index 970464c4b676..44f19f102252 100644 --- a/fs/erofs/decompressor_lzma.c +++ b/fs/erofs/decompressor_lzma.c @@ -166,8 +166,8 @@ int z_erofs_lzma_decompress(struct z_erofs_decompress_req *rq, /* 1. get the exact LZMA compressed size */ kin = kmap(*rq->in); err = z_erofs_fixup_insize(rq, kin + rq->pageofs_in, - min_t(unsigned int, rq->inputsize, - EROFS_BLKSIZ - rq->pageofs_in)); + min_t(unsigned int, rq->inputsize, + rq->sb->s_blocksize - rq->pageofs_in)); if (err) { kunmap(*rq->in); return err; diff --git a/fs/erofs/dir.c b/fs/erofs/dir.c index ecf28f66b97d..966a88cc529e 100644 --- a/fs/erofs/dir.c +++ b/fs/erofs/dir.c @@ -67,9 +67,11 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx) { struct inode *dir = file_inode(f); struct erofs_buf buf = __EROFS_BUF_INITIALIZER; + struct super_block *sb = dir->i_sb; + unsigned long bsz = sb->s_blocksize; const size_t dirsize = i_size_read(dir); - unsigned int i = ctx->pos / EROFS_BLKSIZ; - unsigned int ofs = ctx->pos % EROFS_BLKSIZ; + unsigned int i = erofs_blknr(sb, ctx->pos); + unsigned int ofs = erofs_blkoff(sb, ctx->pos); int err = 0; bool initial = true;
@@ -79,32 +81,28 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx)
de = erofs_bread(&buf, dir, i, EROFS_KMAP); if (IS_ERR(de)) { - erofs_err(dir->i_sb, - "fail to readdir of logical block %u of nid %llu", + erofs_err(sb, "fail to readdir of logical block %u of nid %llu", i, EROFS_I(dir)->nid); err = PTR_ERR(de); break; }
nameoff = le16_to_cpu(de->nameoff); - if (nameoff < sizeof(struct erofs_dirent) || - nameoff >= EROFS_BLKSIZ) { - erofs_err(dir->i_sb, - "invalid de[0].nameoff %u @ nid %llu", + if (nameoff < sizeof(struct erofs_dirent) || nameoff >= bsz) { + erofs_err(sb, "invalid de[0].nameoff %u @ nid %llu", nameoff, EROFS_I(dir)->nid); err = -EFSCORRUPTED; break; }
- maxsize = min_t(unsigned int, - dirsize - ctx->pos + ofs, EROFS_BLKSIZ); + maxsize = min_t(unsigned int, dirsize - ctx->pos + ofs, bsz);
/* search dirents at the arbitrary position */ if (initial) { initial = false;
ofs = roundup(ofs, sizeof(struct erofs_dirent)); - ctx->pos = blknr_to_addr(i) + ofs; + ctx->pos = erofs_pos(sb, i) + ofs; if (ofs >= nameoff) goto skip_this; } @@ -114,7 +112,7 @@ static int erofs_readdir(struct file *f, struct dir_context *ctx) if (err) break; skip_this: - ctx->pos = blknr_to_addr(i) + maxsize; + ctx->pos = erofs_pos(sb, i) + maxsize; ++i; ofs = 0; } diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index 076cf8a149ef..c8ecf168ff25 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -282,8 +282,8 @@ static int erofs_fscache_data_read(struct address_space *mapping, void *src;
/* For tail packing layout, the offset may be non-zero. */ - offset = erofs_blkoff(map.m_pa); - blknr = erofs_blknr(map.m_pa); + offset = erofs_blkoff(sb, map.m_pa); + blknr = erofs_blknr(sb, map.m_pa); size = map.m_llen;
src = erofs_read_metabuf(&buf, sb, blknr, EROFS_KMAP); @@ -333,7 +333,7 @@ static int erofs_fscache_read_folio(struct file *file, struct folio *folio) bool unlock; int ret;
- DBG_BUGON(folio_size(folio) != EROFS_BLKSIZ); + DBG_BUGON(folio_size(folio) != PAGE_SIZE);
ret = erofs_fscache_data_read(folio_mapping(folio), folio_pos(folio), folio_size(folio), &unlock); @@ -529,6 +529,7 @@ struct erofs_fscache *erofs_fscache_acquire_cookie(struct super_block *sb, set_nlink(inode, 1); inode->i_size = OFFSET_MAX; inode->i_mapping->a_ops = &erofs_fscache_meta_aops; + inode->i_blkbits = EROFS_SB(sb)->blkszbits; mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
ctx->inode = inode; diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index e090bcd46db1..efbaa4ef63cb 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -23,8 +23,8 @@ static void *erofs_read_inode(struct erofs_buf *buf, unsigned int ifmt; int err;
- blkaddr = erofs_blknr(inode_loc); - *ofs = erofs_blkoff(inode_loc); + blkaddr = erofs_blknr(sb, inode_loc); + *ofs = erofs_blkoff(sb, inode_loc);
erofs_dbg("%s, reading inode nid %llu at %u of blkaddr %u", __func__, vi->nid, *ofs, blkaddr); @@ -58,11 +58,11 @@ static void *erofs_read_inode(struct erofs_buf *buf, case EROFS_INODE_LAYOUT_EXTENDED: vi->inode_isize = sizeof(struct erofs_inode_extended); /* check if the extended inode acrosses block boundary */ - if (*ofs + vi->inode_isize <= EROFS_BLKSIZ) { + if (*ofs + vi->inode_isize <= sb->s_blocksize) { *ofs += vi->inode_isize; die = (struct erofs_inode_extended *)dic; } else { - const unsigned int gotten = EROFS_BLKSIZ - *ofs; + const unsigned int gotten = sb->s_blocksize - *ofs;
copied = kmalloc(vi->inode_isize, GFP_NOFS); if (!copied) { @@ -176,7 +176,7 @@ static void *erofs_read_inode(struct erofs_buf *buf, err = -EOPNOTSUPP; goto err_out; } - vi->chunkbits = LOG_BLOCK_SIZE + + vi->chunkbits = sb->s_blocksize_bits + (vi->chunkformat & EROFS_CHUNK_FORMAT_BLKBITS_MASK); } inode->i_mtime.tv_sec = inode->i_ctime.tv_sec; @@ -189,11 +189,12 @@ static void *erofs_read_inode(struct erofs_buf *buf, (vi->datalayout == EROFS_INODE_FLAT_PLAIN || vi->datalayout == EROFS_INODE_CHUNK_BASED)) inode->i_flags |= S_DAX; + if (!nblks) /* measure inode.i_blocks as generic filesystems */ - inode->i_blocks = roundup(inode->i_size, EROFS_BLKSIZ) >> 9; + inode->i_blocks = round_up(inode->i_size, sb->s_blocksize) >> 9; else - inode->i_blocks = nblks << LOG_SECTORS_PER_BLOCK; + inode->i_blocks = nblks << (sb->s_blocksize_bits - 9); return kaddr;
bogusimode: @@ -211,11 +212,12 @@ static int erofs_fill_symlink(struct inode *inode, void *kaddr, unsigned int m_pofs) { struct erofs_inode *vi = EROFS_I(inode); + unsigned int bsz = i_blocksize(inode); char *lnk;
/* if it cannot be handled with fast symlink scheme */ if (vi->datalayout != EROFS_INODE_FLAT_INLINE || - inode->i_size >= EROFS_BLKSIZ || inode->i_size < 0) { + inode->i_size >= bsz || inode->i_size < 0) { inode->i_op = &erofs_symlink_iops; return 0; } @@ -226,7 +228,7 @@ static int erofs_fill_symlink(struct inode *inode, void *kaddr,
m_pofs += vi->xattr_isize; /* inline symlink data shouldn't cross block boundary */ - if (m_pofs + inode->i_size > EROFS_BLKSIZ) { + if (m_pofs + inode->i_size > bsz) { kfree(lnk); erofs_err(inode->i_sb, "inline data cross block boundary @ nid %llu", diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 30d464230ae0..2b3d9e9665fa 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -145,8 +145,8 @@ struct erofs_sb_info { #endif u16 device_id_mask; /* valid bits of device id to be used */
- /* inode slot unit size in bit shift */ - unsigned char islotbits; + unsigned char islotbits; /* inode slot unit size in bit shift */ + unsigned char blkszbits;
u32 sb_size; /* total superblock size */ u32 build_time_nsec; @@ -241,13 +241,6 @@ static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp)
/* we strictly follow PAGE_SIZE and no buffer head yet */ #define LOG_BLOCK_SIZE PAGE_SHIFT - -#undef LOG_SECTORS_PER_BLOCK -#define LOG_SECTORS_PER_BLOCK (PAGE_SHIFT - 9) - -#undef SECTORS_PER_BLOCK -#define SECTORS_PER_BLOCK (1 << SECTORS_PER_BLOCK) - #define EROFS_BLKSIZ (1 << LOG_BLOCK_SIZE)
#if (EROFS_BLKSIZ % 4096 || !EROFS_BLKSIZ) @@ -269,9 +262,10 @@ struct erofs_buf {
#define ROOT_NID(sb) ((sb)->root_nid)
-#define erofs_blknr(addr) ((addr) / EROFS_BLKSIZ) -#define erofs_blkoff(addr) ((addr) % EROFS_BLKSIZ) -#define blknr_to_addr(nr) ((erofs_off_t)(nr) * EROFS_BLKSIZ) +#define erofs_blknr(sb, addr) ((addr) >> (sb)->s_blocksize_bits) +#define erofs_blkoff(sb, addr) ((addr) & ((sb)->s_blocksize - 1)) +#define erofs_pos(sb, blk) ((erofs_off_t)(blk) << (sb)->s_blocksize_bits) +#define erofs_iblks(i) (round_up((i)->i_size, i_blocksize(i)) >> (i)->i_blkbits)
#define EROFS_FEATURE_FUNCS(name, compat, feature) \ static inline bool erofs_sb_has_##name(struct erofs_sb_info *sbi) \ @@ -343,7 +337,7 @@ static inline erofs_off_t erofs_iloc(struct inode *inode) { struct erofs_sb_info *sbi = EROFS_I_SB(inode);
- return blknr_to_addr(sbi->meta_blkaddr) + + return erofs_pos(inode->i_sb, sbi->meta_blkaddr) + (EROFS_I(inode)->nid << sbi->islotbits); }
diff --git a/fs/erofs/namei.c b/fs/erofs/namei.c index 642431350bea..8332428b780c 100644 --- a/fs/erofs/namei.c +++ b/fs/erofs/namei.c @@ -89,7 +89,8 @@ static struct erofs_dirent *find_target_dirent(struct erofs_qstr *name, static void *erofs_find_target_block(struct erofs_buf *target, struct inode *dir, struct erofs_qstr *name, int *_ndirents) { - int head = 0, back = DIV_ROUND_UP(dir->i_size, EROFS_BLKSIZ) - 1; + unsigned int bsz = i_blocksize(dir); + int head = 0, back = erofs_iblks(dir) - 1; unsigned int startprfx = 0, endprfx = 0; void *candidate = ERR_PTR(-ENOENT);
@@ -100,8 +101,7 @@ static void *erofs_find_target_block(struct erofs_buf *target,
de = erofs_bread(&buf, dir, mid, EROFS_KMAP); if (!IS_ERR(de)) { - const int nameoff = nameoff_from_disk(de->nameoff, - EROFS_BLKSIZ); + const int nameoff = nameoff_from_disk(de->nameoff, bsz); const int ndirents = nameoff / sizeof(*de); int diff; unsigned int matched; @@ -121,11 +121,10 @@ static void *erofs_find_target_block(struct erofs_buf *target,
dname.name = (u8 *)de + nameoff; if (ndirents == 1) - dname.end = (u8 *)de + EROFS_BLKSIZ; + dname.end = (u8 *)de + bsz; else dname.end = (u8 *)de + - nameoff_from_disk(de[1].nameoff, - EROFS_BLKSIZ); + nameoff_from_disk(de[1].nameoff, bsz);
/* string comparison without already matched prefix */ diff = erofs_dirnamecmp(name, &dname, &matched); @@ -178,7 +177,8 @@ int erofs_namei(struct inode *dir, const struct qstr *name, erofs_nid_t *nid, return PTR_ERR(de);
if (ndirents) - de = find_target_dirent(&qn, (u8 *)de, EROFS_BLKSIZ, ndirents); + de = find_target_dirent(&qn, (u8 *)de, i_blocksize(dir), + ndirents);
if (!IS_ERR(de)) { *nid = le64_to_cpu(de->nid); diff --git a/fs/erofs/super.c b/fs/erofs/super.c index f2647126cb2f..446b9b7e712e 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -53,18 +53,21 @@ void _erofs_info(struct super_block *sb, const char *function,
static int erofs_superblock_csum_verify(struct super_block *sb, void *sbdata) { + size_t len = 1 << EROFS_SB(sb)->blkszbits; struct erofs_super_block *dsb; u32 expected_crc, crc;
- dsb = kmemdup(sbdata + EROFS_SUPER_OFFSET, - EROFS_BLKSIZ - EROFS_SUPER_OFFSET, GFP_KERNEL); + if (len > EROFS_SUPER_OFFSET) + len -= EROFS_SUPER_OFFSET; + + dsb = kmemdup(sbdata + EROFS_SUPER_OFFSET, len, GFP_KERNEL); if (!dsb) return -ENOMEM;
expected_crc = le32_to_cpu(dsb->checksum); dsb->checksum = 0; /* to allow for x86 boot sectors and other oddities. */ - crc = crc32c(~0, dsb, EROFS_BLKSIZ - EROFS_SUPER_OFFSET); + crc = crc32c(~0, dsb, len); kfree(dsb);
if (crc != expected_crc) { @@ -133,11 +136,11 @@ void *erofs_read_metadata(struct super_block *sb, struct erofs_buf *buf, int len, i, cnt;
*offset = round_up(*offset, 4); - ptr = erofs_read_metabuf(buf, sb, erofs_blknr(*offset), EROFS_KMAP); + ptr = erofs_read_metabuf(buf, sb, erofs_blknr(sb, *offset), EROFS_KMAP); if (IS_ERR(ptr)) return ptr;
- len = le16_to_cpu(*(__le16 *)&ptr[erofs_blkoff(*offset)]); + len = le16_to_cpu(*(__le16 *)&ptr[erofs_blkoff(sb, *offset)]); if (!len) len = U16_MAX + 1; buffer = kmalloc(len, GFP_KERNEL); @@ -147,14 +150,15 @@ void *erofs_read_metadata(struct super_block *sb, struct erofs_buf *buf, *lengthp = len;
for (i = 0; i < len; i += cnt) { - cnt = min(EROFS_BLKSIZ - (int)erofs_blkoff(*offset), len - i); - ptr = erofs_read_metabuf(buf, sb, erofs_blknr(*offset), + cnt = min_t(int, sb->s_blocksize - erofs_blkoff(sb, *offset), + len - i); + ptr = erofs_read_metabuf(buf, sb, erofs_blknr(sb, *offset), EROFS_KMAP); if (IS_ERR(ptr)) { kfree(buffer); return ptr; } - memcpy(buffer + i, ptr + erofs_blkoff(*offset), cnt); + memcpy(buffer + i, ptr + erofs_blkoff(sb, *offset), cnt); *offset += cnt; } return buffer; @@ -180,10 +184,10 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb, struct block_device *bdev; void *ptr;
- ptr = erofs_read_metabuf(buf, sb, erofs_blknr(*pos), EROFS_KMAP); + ptr = erofs_read_metabuf(buf, sb, erofs_blknr(sb, *pos), EROFS_KMAP); if (IS_ERR(ptr)) return PTR_ERR(ptr); - dis = ptr + erofs_blkoff(*pos); + dis = ptr + erofs_blkoff(sb, *pos);
if (!dif->path) { if (!dis->tag[0]) { @@ -672,6 +676,7 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) sbi->domain_id = ctx->domain_id; ctx->domain_id = NULL;
+ sbi->blkszbits = PAGE_SHIFT; if (erofs_is_fscache_mode(sb)) { sb->s_blocksize = EROFS_BLKSIZ; sb->s_blocksize_bits = LOG_BLOCK_SIZE; @@ -1007,7 +1012,7 @@ static int erofs_statfs(struct dentry *dentry, struct kstatfs *buf) id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = sb->s_magic; - buf->f_bsize = EROFS_BLKSIZ; + buf->f_bsize = sb->s_blocksize; buf->f_blocks = sbi->total_blocks; buf->f_bfree = buf->f_bavail = 0;
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c index a2776abf3698..7c09ad1beb83 100644 --- a/fs/erofs/xattr.c +++ b/fs/erofs/xattr.c @@ -68,8 +68,8 @@ static int init_inode_xattrs(struct inode *inode) }
it.buf = __EROFS_BUF_INITIALIZER; - it.blkaddr = erofs_blknr(erofs_iloc(inode) + vi->inode_isize); - it.ofs = erofs_blkoff(erofs_iloc(inode) + vi->inode_isize); + it.blkaddr = erofs_blknr(sb, erofs_iloc(inode) + vi->inode_isize); + it.ofs = erofs_blkoff(sb, erofs_iloc(inode) + vi->inode_isize);
/* read in shared xattr array (non-atomic, see kmalloc below) */ it.kaddr = erofs_read_metabuf(&it.buf, sb, it.blkaddr, EROFS_KMAP); @@ -92,9 +92,9 @@ static int init_inode_xattrs(struct inode *inode) it.ofs += sizeof(struct erofs_xattr_ibody_header);
for (i = 0; i < vi->xattr_shared_count; ++i) { - if (it.ofs >= EROFS_BLKSIZ) { + if (it.ofs >= sb->s_blocksize) { /* cannot be unaligned */ - DBG_BUGON(it.ofs != EROFS_BLKSIZ); + DBG_BUGON(it.ofs != sb->s_blocksize);
it.kaddr = erofs_read_metabuf(&it.buf, sb, ++it.blkaddr, EROFS_KMAP); @@ -139,15 +139,15 @@ struct xattr_iter_handlers {
static inline int xattr_iter_fixup(struct xattr_iter *it) { - if (it->ofs < EROFS_BLKSIZ) + if (it->ofs < it->sb->s_blocksize) return 0;
- it->blkaddr += erofs_blknr(it->ofs); + it->blkaddr += erofs_blknr(it->sb, it->ofs); it->kaddr = erofs_read_metabuf(&it->buf, it->sb, it->blkaddr, EROFS_KMAP_ATOMIC); if (IS_ERR(it->kaddr)) return PTR_ERR(it->kaddr); - it->ofs = erofs_blkoff(it->ofs); + it->ofs = erofs_blkoff(it->sb, it->ofs); return 0; }
@@ -165,8 +165,8 @@ static int inline_xattr_iter_begin(struct xattr_iter *it,
inline_xattr_ofs = vi->inode_isize + xattr_header_sz;
- it->blkaddr = erofs_blknr(erofs_iloc(inode) + inline_xattr_ofs); - it->ofs = erofs_blkoff(erofs_iloc(inode) + inline_xattr_ofs); + it->blkaddr = erofs_blknr(it->sb, erofs_iloc(inode) + inline_xattr_ofs); + it->ofs = erofs_blkoff(it->sb, erofs_iloc(inode) + inline_xattr_ofs); it->kaddr = erofs_read_metabuf(&it->buf, inode->i_sb, it->blkaddr, EROFS_KMAP_ATOMIC); if (IS_ERR(it->kaddr)) @@ -222,8 +222,8 @@ static int xattr_foreach(struct xattr_iter *it, processed = 0;
while (processed < entry.e_name_len) { - if (it->ofs >= EROFS_BLKSIZ) { - DBG_BUGON(it->ofs > EROFS_BLKSIZ); + if (it->ofs >= it->sb->s_blocksize) { + DBG_BUGON(it->ofs > it->sb->s_blocksize);
err = xattr_iter_fixup(it); if (err) @@ -231,7 +231,7 @@ static int xattr_foreach(struct xattr_iter *it, it->ofs = 0; }
- slice = min_t(unsigned int, EROFS_BLKSIZ - it->ofs, + slice = min_t(unsigned int, it->sb->s_blocksize - it->ofs, entry.e_name_len - processed);
/* handle name */ @@ -257,8 +257,8 @@ static int xattr_foreach(struct xattr_iter *it, }
while (processed < value_sz) { - if (it->ofs >= EROFS_BLKSIZ) { - DBG_BUGON(it->ofs > EROFS_BLKSIZ); + if (it->ofs >= it->sb->s_blocksize) { + DBG_BUGON(it->ofs > it->sb->s_blocksize);
err = xattr_iter_fixup(it); if (err) @@ -266,7 +266,7 @@ static int xattr_foreach(struct xattr_iter *it, it->ofs = 0; }
- slice = min_t(unsigned int, EROFS_BLKSIZ - it->ofs, + slice = min_t(unsigned int, it->sb->s_blocksize - it->ofs, value_sz - processed); op->value(it, processed, it->kaddr + it->ofs, slice); it->ofs += slice; @@ -352,15 +352,14 @@ static int shared_getxattr(struct inode *inode, struct getxattr_iter *it) { struct erofs_inode *const vi = EROFS_I(inode); struct super_block *const sb = inode->i_sb; - struct erofs_sb_info *const sbi = EROFS_SB(sb); unsigned int i; int ret = -ENOATTR;
for (i = 0; i < vi->xattr_shared_count; ++i) { erofs_blk_t blkaddr = - xattrblock_addr(sbi, vi->xattr_shared_xattrs[i]); + xattrblock_addr(sb, vi->xattr_shared_xattrs[i]);
- it->it.ofs = xattrblock_offset(sbi, vi->xattr_shared_xattrs[i]); + it->it.ofs = xattrblock_offset(sb, vi->xattr_shared_xattrs[i]); it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb, blkaddr, EROFS_KMAP_ATOMIC); if (IS_ERR(it->it.kaddr)) @@ -564,15 +563,14 @@ static int shared_listxattr(struct listxattr_iter *it) struct inode *const inode = d_inode(it->dentry); struct erofs_inode *const vi = EROFS_I(inode); struct super_block *const sb = inode->i_sb; - struct erofs_sb_info *const sbi = EROFS_SB(sb); unsigned int i; int ret = 0;
for (i = 0; i < vi->xattr_shared_count; ++i) { erofs_blk_t blkaddr = - xattrblock_addr(sbi, vi->xattr_shared_xattrs[i]); + xattrblock_addr(sb, vi->xattr_shared_xattrs[i]);
- it->it.ofs = xattrblock_offset(sbi, vi->xattr_shared_xattrs[i]); + it->it.ofs = xattrblock_offset(sb, vi->xattr_shared_xattrs[i]); it->it.kaddr = erofs_read_metabuf(&it->it.buf, sb, blkaddr, EROFS_KMAP_ATOMIC); if (IS_ERR(it->it.kaddr)) diff --git a/fs/erofs/xattr.h b/fs/erofs/xattr.h index 0a43c9ee9f8f..f7a21aaa9755 100644 --- a/fs/erofs/xattr.h +++ b/fs/erofs/xattr.h @@ -19,21 +19,21 @@ static inline unsigned int inlinexattr_header_size(struct inode *inode) sizeof(u32) * EROFS_I(inode)->xattr_shared_count; }
-static inline erofs_blk_t xattrblock_addr(struct erofs_sb_info *sbi, +static inline erofs_blk_t xattrblock_addr(struct super_block *sb, unsigned int xattr_id) { #ifdef CONFIG_EROFS_FS_XATTR - return sbi->xattr_blkaddr + - xattr_id * sizeof(__u32) / EROFS_BLKSIZ; + return EROFS_SB(sb)->xattr_blkaddr + + xattr_id * sizeof(__u32) / sb->s_blocksize; #else return 0; #endif }
-static inline unsigned int xattrblock_offset(struct erofs_sb_info *sbi, +static inline unsigned int xattrblock_offset(struct super_block *sb, unsigned int xattr_id) { - return (xattr_id * sizeof(__u32)) % EROFS_BLKSIZ; + return (xattr_id * sizeof(__u32)) % sb->s_blocksize; }
#ifdef CONFIG_EROFS_FS_XATTR diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c index 47e71964eeff..94e9e0bf3bbd 100644 --- a/fs/erofs/zdata.c +++ b/fs/erofs/zdata.c @@ -766,6 +766,7 @@ static int z_erofs_read_fragment(struct inode *inode, erofs_off_t pos, struct page *page, unsigned int pageofs, unsigned int len) { + struct super_block *sb = inode->i_sb; struct inode *packed_inode = EROFS_I_SB(inode)->packed_inode; struct erofs_buf buf = __EROFS_BUF_INITIALIZER; u8 *src, *dst; @@ -777,16 +778,16 @@ static int z_erofs_read_fragment(struct inode *inode, erofs_off_t pos, pos += EROFS_I(inode)->z_fragmentoff; for (i = 0; i < len; i += cnt) { cnt = min_t(unsigned int, len - i, - EROFS_BLKSIZ - erofs_blkoff(pos)); + sb->s_blocksize - erofs_blkoff(sb, pos)); src = erofs_bread(&buf, packed_inode, - erofs_blknr(pos), EROFS_KMAP); + erofs_blknr(sb, pos), EROFS_KMAP); if (IS_ERR(src)) { erofs_put_metabuf(&buf); return PTR_ERR(src); }
dst = kmap_local_page(page); - memcpy(dst + pageofs + i, src + erofs_blkoff(pos), cnt); + memcpy(dst + pageofs + i, src + erofs_blkoff(sb, pos), cnt); kunmap_local(dst); pos += cnt; } @@ -841,7 +842,8 @@ static int z_erofs_do_read_page(struct z_erofs_decompress_frontend *fe, void *mp;
mp = erofs_read_metabuf(&fe->map.buf, inode->i_sb, - erofs_blknr(map->m_pa), EROFS_NO_KMAP); + erofs_blknr(inode->i_sb, map->m_pa), + EROFS_NO_KMAP); if (IS_ERR(mp)) { err = PTR_ERR(mp); erofs_err(inode->i_sb, @@ -1526,11 +1528,11 @@ static void z_erofs_submit_queue(struct z_erofs_decompress_frontend *f,
/* no device id here, thus it will always succeed */ mdev = (struct erofs_map_dev) { - .m_pa = blknr_to_addr(pcl->obj.index), + .m_pa = erofs_pos(sb, pcl->obj.index), }; (void)erofs_map_dev(sb, &mdev);
- cur = erofs_blknr(mdev.m_pa); + cur = erofs_blknr(sb, mdev.m_pa); end = cur + pcl->pclusterpages;
do { @@ -1564,7 +1566,7 @@ static void z_erofs_submit_queue(struct z_erofs_decompress_frontend *f,
last_bdev = mdev.m_bdev; bio->bi_iter.bi_sector = (sector_t)cur << - LOG_SECTORS_PER_BLOCK; + (sb->s_blocksize_bits - 9); bio->bi_private = q[JQ_SUBMIT]; if (f->readahead) bio->bi_opf |= REQ_RAHEAD; diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c index 5d1a7aff2d70..183e7a4b8259 100644 --- a/fs/erofs/zmap.c +++ b/fs/erofs/zmap.c @@ -18,7 +18,7 @@ int z_erofs_fill_inode(struct inode *inode) vi->z_advise = 0; vi->z_algorithmtype[0] = 0; vi->z_algorithmtype[1] = 0; - vi->z_logical_clusterbits = LOG_BLOCK_SIZE; + vi->z_logical_clusterbits = inode->i_sb->s_blocksize_bits; set_bit(EROFS_I_Z_INITED_BIT, &vi->flags); } inode->i_mapping->a_ops = &z_erofs_aops; @@ -53,13 +53,13 @@ static int legacy_load_cluster_from_disk(struct z_erofs_maprecorder *m, unsigned int advise, type;
m->kaddr = erofs_read_metabuf(&m->map->buf, inode->i_sb, - erofs_blknr(pos), EROFS_KMAP_ATOMIC); + erofs_blknr(inode->i_sb, pos), EROFS_KMAP_ATOMIC); if (IS_ERR(m->kaddr)) return PTR_ERR(m->kaddr);
m->nextpackoff = pos + sizeof(struct z_erofs_vle_decompressed_index); m->lcn = lcn; - di = m->kaddr + erofs_blkoff(pos); + di = m->kaddr + erofs_blkoff(inode->i_sb, pos);
advise = le16_to_cpu(di->di_advise); type = (advise >> Z_EROFS_VLE_DI_CLUSTER_TYPE_BIT) & @@ -160,7 +160,7 @@ static int unpack_compacted_index(struct z_erofs_maprecorder *m, (vcnt << amortizedshift); big_pcluster = vi->z_advise & Z_EROFS_ADVISE_BIG_PCLUSTER_1; encodebits = ((vcnt << amortizedshift) - sizeof(__le32)) * 8 / vcnt; - eofs = erofs_blkoff(pos); + eofs = erofs_blkoff(m->inode->i_sb, pos); base = round_down(eofs, vcnt << amortizedshift); in = m->kaddr + base;
@@ -252,7 +252,7 @@ static int compacted_load_cluster_from_disk(struct z_erofs_maprecorder *m, struct erofs_inode *const vi = EROFS_I(inode); const erofs_off_t ebase = sizeof(struct z_erofs_map_header) + ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, 8); - const unsigned int totalidx = DIV_ROUND_UP(inode->i_size, EROFS_BLKSIZ); + unsigned int totalidx = erofs_iblks(inode); unsigned int compacted_4b_initial, compacted_2b; unsigned int amortizedshift; erofs_off_t pos; @@ -290,7 +290,7 @@ static int compacted_load_cluster_from_disk(struct z_erofs_maprecorder *m, out: pos += lcn * (1 << amortizedshift); m->kaddr = erofs_read_metabuf(&m->map->buf, inode->i_sb, - erofs_blknr(pos), EROFS_KMAP_ATOMIC); + erofs_blknr(inode->i_sb, pos), EROFS_KMAP_ATOMIC); if (IS_ERR(m->kaddr)) return PTR_ERR(m->kaddr); return unpack_compacted_index(m, amortizedshift, pos, lookahead); @@ -360,6 +360,7 @@ static int z_erofs_extent_lookback(struct z_erofs_maprecorder *m, static int z_erofs_get_extent_compressedlen(struct z_erofs_maprecorder *m, unsigned int initial_lcn) { + struct super_block *sb = m->inode->i_sb; struct erofs_inode *const vi = EROFS_I(m->inode); struct erofs_map_blocks *const map = m->map; const unsigned int lclusterbits = vi->z_logical_clusterbits; @@ -406,7 +407,7 @@ static int z_erofs_get_extent_compressedlen(struct z_erofs_maprecorder *m, * if the 1st NONHEAD lcluster is actually PLAIN or HEAD type * rather than CBLKCNT, it's a 1 lcluster-sized pcluster. */ - m->compressedblks = 1 << (lclusterbits - LOG_BLOCK_SIZE); + m->compressedblks = 1 << (lclusterbits - sb->s_blocksize_bits); break; case Z_EROFS_VLE_CLUSTER_TYPE_NONHEAD: if (m->delta[0] != 1) @@ -422,7 +423,7 @@ static int z_erofs_get_extent_compressedlen(struct z_erofs_maprecorder *m, return -EFSCORRUPTED; } out: - map->m_plen = (u64)m->compressedblks << LOG_BLOCK_SIZE; + map->m_plen = erofs_pos(sb, m->compressedblks); return 0; err_bonus_cblkcnt: erofs_err(m->inode->i_sb, @@ -565,7 +566,7 @@ static int z_erofs_do_map_blocks(struct inode *inode, } else if (fragment && m.lcn == vi->z_tailextent_headlcn) { map->m_flags |= EROFS_MAP_FRAGMENT; } else { - map->m_pa = blknr_to_addr(m.pblk); + map->m_pa = erofs_pos(inode->i_sb, m.pblk); err = z_erofs_get_extent_compressedlen(&m, initial_lcn); if (err) goto unmap_out; @@ -595,7 +596,7 @@ static int z_erofs_do_map_blocks(struct inode *inode, if ((flags & EROFS_GET_BLOCKS_FIEMAP) || ((flags & EROFS_GET_BLOCKS_READMORE) && map->m_algorithmformat == Z_EROFS_COMPRESSION_LZMA && - map->m_llen >= EROFS_BLKSIZ)) { + map->m_llen >= i_blocksize(inode))) { err = z_erofs_get_extent_decompressedlen(&m); if (!err) map->m_flags |= EROFS_MAP_FULL_MAPPED; @@ -636,13 +637,13 @@ static int z_erofs_fill_inode_lazy(struct inode *inode) goto out_unlock;
pos = ALIGN(erofs_iloc(inode) + vi->inode_isize + vi->xattr_isize, 8); - kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(pos), EROFS_KMAP); + kaddr = erofs_read_metabuf(&buf, sb, erofs_blknr(sb, pos), EROFS_KMAP); if (IS_ERR(kaddr)) { err = PTR_ERR(kaddr); goto out_unlock; }
- h = kaddr + erofs_blkoff(pos); + h = kaddr + erofs_blkoff(sb, pos); /* * if the highest bit of the 8-byte map header is set, the whole file * is stored in the packed inode. The rest bits keeps z_fragmentoff. @@ -666,7 +667,7 @@ static int z_erofs_fill_inode_lazy(struct inode *inode) goto out_put_metabuf; }
- vi->z_logical_clusterbits = LOG_BLOCK_SIZE + (h->h_clusterbits & 7); + vi->z_logical_clusterbits = sb->s_blocksize_bits + (h->h_clusterbits & 7); if (!erofs_sb_has_big_pcluster(EROFS_SB(sb)) && vi->z_advise & (Z_EROFS_ADVISE_BIG_PCLUSTER_1 | Z_EROFS_ADVISE_BIG_PCLUSTER_2)) { @@ -695,7 +696,7 @@ static int z_erofs_fill_inode_lazy(struct inode *inode) erofs_put_metabuf(&map.buf);
if (!map.m_plen || - erofs_blkoff(map.m_pa) + map.m_plen > EROFS_BLKSIZ) { + erofs_blkoff(sb, map.m_pa) + map.m_plen > sb->s_blocksize) { erofs_err(sb, "invalid tail-packing pclustersize %llu", map.m_plen); err = -EFSCORRUPTED; diff --git a/include/trace/events/erofs.h b/include/trace/events/erofs.h index e095d36db939..01d0b8927376 100644 --- a/include/trace/events/erofs.h +++ b/include/trace/events/erofs.h @@ -66,8 +66,8 @@ TRACE_EVENT(erofs_fill_inode, TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->nid = EROFS_I(inode)->nid; - __entry->blkaddr = erofs_blknr(erofs_iloc(inode)); - __entry->ofs = erofs_blkoff(erofs_iloc(inode)); + __entry->blkaddr = erofs_blknr(inode->i_sb, erofs_iloc(inode)); + __entry->ofs = erofs_blkoff(inode->i_sb, erofs_iloc(inode)); ),
TP_printk("dev = (%d,%d), nid = %llu, blkaddr %u ofs %u",
From: Jingbo Xu jefflexu@linux.alibaba.com
commit d3c4bdcc756e60b95365c66ff58844ce75d1c8f8 upstream.
Set the block size to that specified in on-disk superblock.
Also remove the hard constraint of PAGE_SIZE block size for the uncompressed device backend. This constraint is temporarily remained for compressed device and fscache backend, as there is more work needed to handle the condition where the block size is not equal to PAGE_SIZE.
It is worth noting that the on-disk block size is read prior to erofs_superblock_csum_verify(), as the read block size is needed in the latter.
Besides, later we are going to make erofs refer to tar data blobs (which is 512-byte aligned) for OCI containers, where the block size is 512 bytes. In this case, the 512-byte block size may not be adequate for a directory to contain enough dirents. To fix this, we are also going to introduce directory block size independent on the block size.
Due to we have already supported block size smaller than PAGE_SIZE now, disable all these images with such separated directory block size until we supported this feature later.
Signed-off-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Gao Xiang hsiangkao@linux.alibaba.com Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Chao Yu chao@kernel.org Link: https://lore.kernel.org/r/20230313135309.75269-3-jefflexu@linux.alibaba.com Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com --- fs/erofs/erofs_fs.h | 5 +++-- fs/erofs/inode.c | 3 ++- fs/erofs/internal.h | 10 +--------- fs/erofs/super.c | 45 +++++++++++++++++++++++++++++---------------- 4 files changed, 35 insertions(+), 28 deletions(-)
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index dbcd24371002..44876a97cabd 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -53,7 +53,7 @@ struct erofs_super_block { __le32 magic; /* file system magic number */ __le32 checksum; /* crc32c(super_block) */ __le32 feature_compat; - __u8 blkszbits; /* support block_size == PAGE_SIZE only */ + __u8 blkszbits; /* filesystem block size in bit shift */ __u8 sb_extslots; /* superblock size = 128 + sb_extslots * 16 */
__le16 root_nid; /* nid of root directory */ @@ -75,7 +75,8 @@ struct erofs_super_block { } __packed u1; __le16 extra_devices; /* # of devices besides the primary device */ __le16 devt_slotoff; /* startoff = devt_slotoff * devt_slotsize */ - __u8 reserved[6]; + __u8 dirblkbits; /* directory block size in bit shift */ + __u8 reserved[5]; __le64 packed_nid; /* nid of the special packed inode */ __u8 reserved2[24]; }; diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index efbaa4ef63cb..8fc41fd1620c 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -291,7 +291,8 @@ static int erofs_fill_inode(struct inode *inode) }
if (erofs_inode_is_data_compressed(vi->datalayout)) { - if (!erofs_is_fscache_mode(inode->i_sb)) + if (!erofs_is_fscache_mode(inode->i_sb) && + inode->i_sb->s_blocksize_bits == PAGE_SHIFT) err = z_erofs_fill_inode(inode); else err = -EOPNOTSUPP; diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 2b3d9e9665fa..d7cd1e619d46 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -146,7 +146,7 @@ struct erofs_sb_info { u16 device_id_mask; /* valid bits of device id to be used */
unsigned char islotbits; /* inode slot unit size in bit shift */ - unsigned char blkszbits; + unsigned char blkszbits; /* filesystem block size in bit shift */
u32 sb_size; /* total superblock size */ u32 build_time_nsec; @@ -239,14 +239,6 @@ static inline int erofs_wait_on_workgroup_freezed(struct erofs_workgroup *grp) VAL != EROFS_LOCKED_MAGIC); }
-/* we strictly follow PAGE_SIZE and no buffer head yet */ -#define LOG_BLOCK_SIZE PAGE_SHIFT -#define EROFS_BLKSIZ (1 << LOG_BLOCK_SIZE) - -#if (EROFS_BLKSIZ % 4096 || !EROFS_BLKSIZ) -#error erofs cannot be used in this platform -#endif - enum erofs_kmap_type { EROFS_NO_KMAP, /* don't map the buffer */ EROFS_KMAP, /* use kmap() to map the buffer */ diff --git a/fs/erofs/super.c b/fs/erofs/super.c index 446b9b7e712e..25cd66e487e8 100644 --- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -285,7 +285,6 @@ static int erofs_read_superblock(struct super_block *sb) struct erofs_sb_info *sbi; struct erofs_buf buf = __EROFS_BUF_INITIALIZER; struct erofs_super_block *dsb; - unsigned int blkszbits; void *data; int ret;
@@ -304,6 +303,16 @@ static int erofs_read_superblock(struct super_block *sb) goto out; }
+ sbi->blkszbits = dsb->blkszbits; + if (sbi->blkszbits < 9 || sbi->blkszbits > PAGE_SHIFT) { + erofs_err(sb, "blkszbits %u isn't supported", sbi->blkszbits); + goto out; + } + if (dsb->dirblkbits) { + erofs_err(sb, "dirblkbits %u isn't supported", dsb->dirblkbits); + goto out; + } + sbi->feature_compat = le32_to_cpu(dsb->feature_compat); if (erofs_sb_has_sb_chksum(sbi)) { ret = erofs_superblock_csum_verify(sb, data); @@ -312,19 +321,11 @@ static int erofs_read_superblock(struct super_block *sb) }
ret = -EINVAL; - blkszbits = dsb->blkszbits; - /* 9(512 bytes) + LOG_SECTORS_PER_BLOCK == LOG_BLOCK_SIZE */ - if (blkszbits != LOG_BLOCK_SIZE) { - erofs_err(sb, "blkszbits %u isn't supported on this platform", - blkszbits); - goto out; - } - if (!check_layout_compatibility(sb, dsb)) goto out;
sbi->sb_size = 128 + dsb->sb_extslots * EROFS_SB_EXTSLOT_SIZE; - if (sbi->sb_size > EROFS_BLKSIZ) { + if (sbi->sb_size > PAGE_SIZE - EROFS_SUPER_OFFSET) { erofs_err(sb, "invalid sb_extslots %u (more than a fs block)", sbi->sb_size); goto out; @@ -678,8 +679,8 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc)
sbi->blkszbits = PAGE_SHIFT; if (erofs_is_fscache_mode(sb)) { - sb->s_blocksize = EROFS_BLKSIZ; - sb->s_blocksize_bits = LOG_BLOCK_SIZE; + sb->s_blocksize = PAGE_SIZE; + sb->s_blocksize_bits = PAGE_SHIFT;
err = erofs_fscache_register_fs(sb); if (err) @@ -689,8 +690,8 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) if (err) return err; } else { - if (!sb_set_blocksize(sb, EROFS_BLKSIZ)) { - erofs_err(sb, "failed to set erofs blksize"); + if (!sb_set_blocksize(sb, PAGE_SIZE)) { + errorfc(fc, "failed to set initial blksize"); return -EINVAL; }
@@ -703,12 +704,24 @@ static int erofs_fc_fill_super(struct super_block *sb, struct fs_context *fc) if (err) return err;
- if (test_opt(&sbi->opt, DAX_ALWAYS)) { - BUILD_BUG_ON(EROFS_BLKSIZ != PAGE_SIZE); + if (sb->s_blocksize_bits != sbi->blkszbits) { + if (erofs_is_fscache_mode(sb)) { + errorfc(fc, "unsupported blksize for fscache mode"); + return -EINVAL; + } + if (!sb_set_blocksize(sb, 1 << sbi->blkszbits)) { + errorfc(fc, "failed to set erofs blksize"); + return -EINVAL; + } + }
+ if (test_opt(&sbi->opt, DAX_ALWAYS)) { if (!sbi->dax_dev) { errorfc(fc, "DAX unsupported by block device. Turning off DAX."); clear_opt(&sbi->opt, DAX_ALWAYS); + } else if (sbi->blkszbits != PAGE_SHIFT) { + errorfc(fc, "unsupported blocksize for DAX"); + clear_opt(&sbi->opt, DAX_ALWAYS); } }
commit 9ed50b8231e37b1ae863f5dec8153b98d9f389b4 upstream.
Fast symlink can be used if the on-disk symlink data is stored in the same block as the on-disk inode, so we don’t need to trigger another I/O for symlink data. However, currently fs correction could be reported _incorrectly_ if inode xattrs are too large.
In fact, these should be valid images although they cannot be handled as fast symlinks.
Many thanks to Colin for reporting this!
Reported-by: Colin Walters walters@verbum.org Reported-by: https://honggfuzz.dev/ Link: https://lore.kernel.org/r/bb2dd430-7de0-47da-ae5b-82ab2dd4d945@app.fastmail.... Fixes: 431339ba9042 ("staging: erofs: add inode operations") [ Note that it's a runtime misbehavior instead of a security issue. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com Link: https://lore.kernel.org/r/20240909031911.1174718-1-hsiangkao@linux.alibaba.c... --- fs/erofs/inode.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-)
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c index 8fc41fd1620c..7dcf350b9fef 100644 --- a/fs/erofs/inode.c +++ b/fs/erofs/inode.c @@ -212,12 +212,14 @@ static int erofs_fill_symlink(struct inode *inode, void *kaddr, unsigned int m_pofs) { struct erofs_inode *vi = EROFS_I(inode); - unsigned int bsz = i_blocksize(inode); + loff_t off; char *lnk;
- /* if it cannot be handled with fast symlink scheme */ - if (vi->datalayout != EROFS_INODE_FLAT_INLINE || - inode->i_size >= bsz || inode->i_size < 0) { + m_pofs += vi->xattr_isize; + /* check if it cannot be handled with fast symlink scheme */ + if (vi->datalayout != EROFS_INODE_FLAT_INLINE || inode->i_size < 0 || + check_add_overflow(m_pofs, inode->i_size, &off) || + off > i_blocksize(inode)) { inode->i_op = &erofs_symlink_iops; return 0; } @@ -226,16 +228,6 @@ static int erofs_fill_symlink(struct inode *inode, void *kaddr, if (!lnk) return -ENOMEM;
- m_pofs += vi->xattr_isize; - /* inline symlink data shouldn't cross block boundary */ - if (m_pofs + inode->i_size > bsz) { - kfree(lnk); - erofs_err(inode->i_sb, - "inline data cross block boundary @ nid %llu", - vi->nid); - DBG_BUGON(1); - return -EFSCORRUPTED; - } memcpy(lnk, kaddr + m_pofs, inode->i_size); lnk[inode->i_size] = '\0';
On Tue, Oct 08, 2024 at 02:57:04PM +0800, Gao Xiang wrote:
commit 4efdec36dc9907628e590a68193d6d8e5e74d032 upstream.
erofs_inode_datablocks() has the only one caller, let's just get rid of it entirely. No logic changes.
Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Chao Yu chao@kernel.org Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") Link: https://lore.kernel.org/r/20230204093040.97967-1-hsiangkao@linux.alibaba.com [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com
Obsoleted EROFS_BLKSIZ impedes efforts to backport 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") 9e2f9d34dd12 ("erofs: handle overlapped pclusters out of crafted images properly")
To avoid further bugfix conflicts due to random EROFS_BLKSIZs around the whole codebase, just backport the dependencies for 6.1.y.
all now queued up, thanks.
greg k-h
On 2024/10/8 18:26, Greg Kroah-Hartman wrote:
On Tue, Oct 08, 2024 at 02:57:04PM +0800, Gao Xiang wrote:
commit 4efdec36dc9907628e590a68193d6d8e5e74d032 upstream.
erofs_inode_datablocks() has the only one caller, let's just get rid of it entirely. No logic changes.
Reviewed-by: Yue Hu huyue2@coolpad.com Reviewed-by: Jingbo Xu jefflexu@linux.alibaba.com Reviewed-by: Chao Yu chao@kernel.org Stable-dep-of: 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") Link: https://lore.kernel.org/r/20230204093040.97967-1-hsiangkao@linux.alibaba.com [ Gao Xiang: apply this to 6.6.y to avoid further backport twists due to obsoleted EROFS_BLKSIZ. ] Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com
Obsoleted EROFS_BLKSIZ impedes efforts to backport 9ed50b8231e3 ("erofs: fix incorrect symlink detection in fast symlink") 9e2f9d34dd12 ("erofs: handle overlapped pclusters out of crafted images properly")
To avoid further bugfix conflicts due to random EROFS_BLKSIZs around the whole codebase, just backport the dependencies for 6.1.y.
all now queued up, thanks.
Thanks Greg, I'd like to avoid obsoleted EROFS_BLKSIZ conflicts for 6.1.y anymore (and just a few dependencies to avoid this), so that will save the future bugfix backport efforts around the 6.1.y codebase.
For more older stable versions, I will manually handle conflicts later since more non-trivial dependencies need otherwise but I think bugfixes for older stable versions will become fewer and fewer...
Thanks, Gao Xiang
greg k-h
linux-stable-mirror@lists.linaro.org
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Gao Xiang -
Greg Kroah-Hartman