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Subject[PATCH] fsck.f2fs: add basic compress related check/fix
Date
From: Robin Hsu <robinhsu@google.com>

* check/fix i_compr_blocks
* check/fix compressed flag in i_flags when compression is not
supported.

Signed-off-by: Robin Hsu <robinhsu@google.com>
---
fsck/fsck.c | 160 +++++++++++++++++++++++++++++++++++-----------
fsck/fsck.h | 14 ++--
fsck/main.c | 6 +-
include/f2fs_fs.h | 15 +++++
4 files changed, 151 insertions(+), 44 deletions(-)

diff --git a/fsck/fsck.c b/fsck/fsck.c
index 80a6d8e..17e3eec 100644
--- a/fsck/fsck.c
+++ b/fsck/fsck.c
@@ -533,7 +533,8 @@ out:

int fsck_chk_node_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
u32 nid, enum FILE_TYPE ftype, enum NODE_TYPE ntype,
- u32 *blk_cnt, struct child_info *child)
+ u32 *blk_cnt, struct f2fs_compr_blk_cnt *cbc,
+ struct child_info *child)
{
struct node_info ni;
struct f2fs_node *node_blk = NULL;
@@ -547,7 +548,8 @@ int fsck_chk_node_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
if (ntype == TYPE_INODE) {
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);

- fsck_chk_inode_blk(sbi, nid, ftype, node_blk, blk_cnt, &ni, child);
+ fsck_chk_inode_blk(sbi, nid, ftype, node_blk, blk_cnt, cbc,
+ &ni, child);
quota_add_inode_usage(fsck->qctx, nid, &node_blk->i);
} else {
switch (ntype) {
@@ -555,19 +557,19 @@ int fsck_chk_node_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
f2fs_set_main_bitmap(sbi, ni.blk_addr,
CURSEG_WARM_NODE);
fsck_chk_dnode_blk(sbi, inode, nid, ftype, node_blk,
- blk_cnt, child, &ni);
+ blk_cnt, cbc, child, &ni);
break;
case TYPE_INDIRECT_NODE:
f2fs_set_main_bitmap(sbi, ni.blk_addr,
CURSEG_COLD_NODE);
fsck_chk_idnode_blk(sbi, inode, ftype, node_blk,
- blk_cnt, child);
+ blk_cnt, cbc, child);
break;
case TYPE_DOUBLE_INDIRECT_NODE:
f2fs_set_main_bitmap(sbi, ni.blk_addr,
CURSEG_COLD_NODE);
fsck_chk_didnode_blk(sbi, inode, ftype, node_blk,
- blk_cnt, child);
+ blk_cnt, cbc, child);
break;
default:
ASSERT(0);
@@ -667,7 +669,8 @@ void fsck_reada_all_direct_node_blocks(struct f2fs_sb_info *sbi,
/* start with valid nid and blkaddr */
void fsck_chk_inode_blk(struct f2fs_sb_info *sbi, u32 nid,
enum FILE_TYPE ftype, struct f2fs_node *node_blk,
- u32 *blk_cnt, struct node_info *ni, struct child_info *child_d)
+ u32 *blk_cnt, struct f2fs_compr_blk_cnt *cbc,
+ struct node_info *ni, struct child_info *child_d)
{
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
struct child_info child;
@@ -675,6 +678,12 @@ void fsck_chk_inode_blk(struct f2fs_sb_info *sbi, u32 nid,
u32 i_links = le32_to_cpu(node_blk->i.i_links);
u64 i_size = le64_to_cpu(node_blk->i.i_size);
u64 i_blocks = le64_to_cpu(node_blk->i.i_blocks);
+ bool compr_supported = c.feature & cpu_to_le32(F2FS_FEATURE_COMPRESSION);
+ u32 i_flags = le32_to_cpu(node_blk->i.i_flags);
+ bool compressed = (i_flags & F2FS_COMPR_FL)? true: false;
+ bool compr_rel = (node_blk->i.i_inline & F2FS_COMPRESS_RELEASED)?
+ true : false;
+ u64 i_compr_blocks = le64_to_cpu(node_blk->i.i_compr_blocks);
nid_t i_xattr_nid = le32_to_cpu(node_blk->i.i_xattr_nid);
int ofs;
char *en;
@@ -683,7 +692,23 @@ void fsck_chk_inode_blk(struct f2fs_sb_info *sbi, u32 nid,
unsigned short i_gc_failures;
int need_fix = 0;
int ret;
+ u32 cluster_size = 1 << node_blk->i.i_log_cluster_size;

+ if (!compr_supported && compressed) {
+ /*
+ * The 'compression' flag in i_flags affects the traverse of
+ * the node tree. Thus, it must be fixed unconditionally
+ * in the memory (node_blk).
+ */
+ node_blk->i.i_flags &= ~cpu_to_le32(F2FS_COMPR_FL);
+ compressed = false;
+ if (c.fix_on) {
+ need_fix = 1;
+ FIX_MSG("[0x%x] i_flags=0x%x -> 0x%x",
+ nid, i_flags, node_blk->i.i_flags);
+ }
+ i_flags &= ~F2FS_COMPR_FL;
+ }
memset(&child, 0, sizeof(child));
child.links = 2;
child.p_ino = nid;
@@ -897,31 +922,45 @@ void fsck_chk_inode_blk(struct f2fs_sb_info *sbi, u32 nid,
/* check extent info */
check_extent_info(&child, blkaddr, 0);

+ if (blkaddr == NULL_ADDR)
+ continue;
if (blkaddr == COMPRESS_ADDR) {
- if (node_blk->i.i_compr_blocks) {
+ if (!compressed || (child.pgofs &
+ (cluster_size - 1)) != 0) {
+ if (c.fix_on) {
+ node_blk->i.i_addr[ofs + idx] =
+ NULL_ADDR;
+ need_fix = 1;
+ FIX_MSG("[0x%x] i_addr[%d] = 0", nid,
+ ofs + idx);
+ }
+ continue;
+ }
+ if (!compr_rel) {
fsck->chk.valid_blk_cnt++;
*blk_cnt = *blk_cnt + 1;
+ cbc->cheader_pgofs = child.pgofs;
+ cbc->cnt++;
}
continue;
}
-
- if (blkaddr != 0) {
- ret = fsck_chk_data_blk(sbi,
- IS_CASEFOLDED(&node_blk->i),
- blkaddr,
- &child, (i_blocks == *blk_cnt),
- ftype, nid, idx, ni->version,
- file_is_encrypt(&node_blk->i));
- if (!ret) {
- *blk_cnt = *blk_cnt + 1;
- if (cur_qtype != -1 && blkaddr != NEW_ADDR)
- qf_last_blkofs[cur_qtype] = child.pgofs;
- } else if (c.fix_on) {
- node_blk->i.i_addr[ofs + idx] = 0;
- need_fix = 1;
- FIX_MSG("[0x%x] i_addr[%d] = 0",
- nid, ofs + idx);
- }
+ if (!compr_rel && blkaddr == NEW_ADDR &&
+ child.pgofs - cbc->cheader_pgofs < cluster_size)
+ cbc->cnt++;
+ ret = fsck_chk_data_blk(sbi,
+ IS_CASEFOLDED(&node_blk->i),
+ blkaddr,
+ &child, (i_blocks == *blk_cnt),
+ ftype, nid, idx, ni->version,
+ file_is_encrypt(&node_blk->i));
+ if (!ret) {
+ *blk_cnt = *blk_cnt + 1;
+ if (cur_qtype != -1 && blkaddr != NEW_ADDR)
+ qf_last_blkofs[cur_qtype] = child.pgofs;
+ } else if (c.fix_on) {
+ node_blk->i.i_addr[ofs + idx] = 0;
+ need_fix = 1;
+ FIX_MSG("[0x%x] i_addr[%d] = 0", nid, ofs + idx);
}
}

@@ -948,7 +987,7 @@ void fsck_chk_inode_blk(struct f2fs_sb_info *sbi, u32 nid,
goto skip;

ret = fsck_chk_node_blk(sbi, &node_blk->i, i_nid,
- ftype, ntype, blk_cnt, &child);
+ ftype, ntype, blk_cnt, cbc, &child);
if (!ret) {
*blk_cnt = *blk_cnt + 1;
} else if (ret == -EINVAL) {
@@ -992,6 +1031,16 @@ check:
nid, i_blocks, *blk_cnt);
}
}
+
+ if (compressed && i_compr_blocks != cbc->cnt) {
+ if (c.fix_on) {
+ node_blk->i.i_compr_blocks = cpu_to_le64(cbc->cnt);
+ need_fix = 1;
+ FIX_MSG("[0x%x] i_compr_blocks=0x%08"PRIx64" -> 0x%x",
+ nid, i_compr_blocks, cbc->cnt);
+ }
+ }
+
skip_blkcnt_fix:
en = malloc(F2FS_PRINT_NAMELEN);
ASSERT(en);
@@ -1130,27 +1179,48 @@ skip_blkcnt_fix:

int fsck_chk_dnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
u32 nid, enum FILE_TYPE ftype, struct f2fs_node *node_blk,
- u32 *blk_cnt, struct child_info *child, struct node_info *ni)
+ u32 *blk_cnt, struct f2fs_compr_blk_cnt *cbc,
+ struct child_info *child, struct node_info *ni)
{
int idx, ret;
int need_fix = 0;
child->p_ino = nid;
child->pp_ino = le32_to_cpu(inode->i_pino);
+ u32 i_flags = le32_to_cpu(inode->i_flags);
+ bool compressed = (i_flags & F2FS_COMPR_FL)? true: false;
+ bool compr_rel = (inode->i_inline & F2FS_COMPRESS_RELEASED)?
+ true : false;
+ u32 cluster_size = 1 << inode->i_log_cluster_size;

for (idx = 0; idx < ADDRS_PER_BLOCK(inode); idx++, child->pgofs++) {
block_t blkaddr = le32_to_cpu(node_blk->dn.addr[idx]);

check_extent_info(child, blkaddr, 0);

- if (blkaddr == 0x0)
+ if (blkaddr == NULL_ADDR)
continue;
if (blkaddr == COMPRESS_ADDR) {
- if (inode->i_compr_blocks) {
+ if (!compressed || (child->pgofs &
+ (cluster_size - 1)) != 0) {
+ if (c.fix_on) {
+ node_blk->dn.addr[idx] = NULL_ADDR;
+ need_fix = 1;
+ FIX_MSG("[0x%x] dn.addr[%d] = 0", nid,
+ idx);
+ }
+ continue;
+ }
+ if (!compr_rel) {
F2FS_FSCK(sbi)->chk.valid_blk_cnt++;
*blk_cnt = *blk_cnt + 1;
+ cbc->cheader_pgofs = child->pgofs;
+ cbc->cnt++;
}
continue;
}
+ if (!compr_rel && blkaddr == NEW_ADDR && child->pgofs -
+ cbc->cheader_pgofs < cluster_size)
+ cbc->cnt++;
ret = fsck_chk_data_blk(sbi, IS_CASEFOLDED(inode),
blkaddr, child,
le64_to_cpu(inode->i_blocks) == *blk_cnt, ftype,
@@ -1161,7 +1231,7 @@ int fsck_chk_dnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
if (cur_qtype != -1 && blkaddr != NEW_ADDR)
qf_last_blkofs[cur_qtype] = child->pgofs;
} else if (c.fix_on) {
- node_blk->dn.addr[idx] = 0;
+ node_blk->dn.addr[idx] = NULL_ADDR;
need_fix = 1;
FIX_MSG("[0x%x] dn.addr[%d] = 0", nid, idx);
}
@@ -1175,7 +1245,7 @@ int fsck_chk_dnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,

int fsck_chk_idnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
enum FILE_TYPE ftype, struct f2fs_node *node_blk, u32 *blk_cnt,
- struct child_info *child)
+ struct f2fs_compr_blk_cnt *cbc, struct child_info *child)
{
int need_fix = 0, ret;
int i = 0;
@@ -1187,7 +1257,8 @@ int fsck_chk_idnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
goto skip;
ret = fsck_chk_node_blk(sbi, inode,
le32_to_cpu(node_blk->in.nid[i]),
- ftype, TYPE_DIRECT_NODE, blk_cnt, child);
+ ftype, TYPE_DIRECT_NODE, blk_cnt,
+ cbc, child);
if (!ret)
*blk_cnt = *blk_cnt + 1;
else if (ret == -EINVAL) {
@@ -1217,7 +1288,7 @@ skip:

int fsck_chk_didnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
enum FILE_TYPE ftype, struct f2fs_node *node_blk, u32 *blk_cnt,
- struct child_info *child)
+ struct f2fs_compr_blk_cnt *cbc, struct child_info *child)
{
int i = 0;
int need_fix = 0, ret = 0;
@@ -1229,7 +1300,7 @@ int fsck_chk_didnode_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
goto skip;
ret = fsck_chk_node_blk(sbi, inode,
le32_to_cpu(node_blk->in.nid[i]),
- ftype, TYPE_INDIRECT_NODE, blk_cnt, child);
+ ftype, TYPE_INDIRECT_NODE, blk_cnt, cbc, child);
if (!ret)
*blk_cnt = *blk_cnt + 1;
else if (ret == -EINVAL) {
@@ -1474,6 +1545,7 @@ static int __chk_dentries(struct f2fs_sb_info *sbi, int casefolded,
enum FILE_TYPE ftype;
int dentries = 0;
u32 blk_cnt;
+ struct f2fs_compr_blk_cnt cbc;
u8 *name;
char en[F2FS_PRINT_NAMELEN];
u16 name_len;
@@ -1613,10 +1685,12 @@ static int __chk_dentries(struct f2fs_sb_info *sbi, int casefolded,
dentry, max, i, last_blk, enc_name);

blk_cnt = 1;
+ cbc.cnt = 0;
+ cbc.cheader_pgofs = CHEADER_PGOFS_NONE;
child->i_namelen = name_len;
ret = fsck_chk_node_blk(sbi,
NULL, le32_to_cpu(dentry[i].ino),
- ftype, TYPE_INODE, &blk_cnt, child);
+ ftype, TYPE_INODE, &blk_cnt, &cbc, child);

if (ret && c.fix_on) {
int j;
@@ -1753,6 +1827,7 @@ int fsck_chk_data_blk(struct f2fs_sb_info *sbi, int casefolded,
int fsck_chk_orphan_node(struct f2fs_sb_info *sbi)
{
u32 blk_cnt = 0;
+ struct f2fs_compr_blk_cnt cbc = {0, CHEADER_PGOFS_NONE};
block_t start_blk, orphan_blkaddr, i, j;
struct f2fs_orphan_block *orphan_blk, *new_blk;
struct f2fs_super_block *sb = F2FS_RAW_SUPER(sbi);
@@ -1784,6 +1859,8 @@ int fsck_chk_orphan_node(struct f2fs_sb_info *sbi)
DBG(1, "[%3d] ino [0x%x]\n", i, ino);
struct node_info ni;
blk_cnt = 1;
+ cbc.cnt = 0;
+ cbc.cheader_pgofs = CHEADER_PGOFS_NONE;

if (c.preen_mode == PREEN_MODE_1 && !c.fix_on) {
get_node_info(sbi, ino, &ni);
@@ -1799,7 +1876,7 @@ int fsck_chk_orphan_node(struct f2fs_sb_info *sbi)

ret = fsck_chk_node_blk(sbi, NULL, ino,
F2FS_FT_ORPHAN, TYPE_INODE, &blk_cnt,
- NULL);
+ &cbc, NULL);
if (!ret)
new_blk->ino[new_entry_count++] =
orphan_blk->ino[j];
@@ -1829,6 +1906,7 @@ int fsck_chk_quota_node(struct f2fs_sb_info *sbi)
enum quota_type qtype;
int ret = 0;
u32 blk_cnt = 0;
+ struct f2fs_compr_blk_cnt cbc = {0, CHEADER_PGOFS_NONE};

for (qtype = 0; qtype < F2FS_MAX_QUOTAS; qtype++) {
cur_qtype = qtype;
@@ -1839,6 +1917,8 @@ int fsck_chk_quota_node(struct f2fs_sb_info *sbi)

DBG(1, "qtype [%d] ino [0x%x]\n", qtype, ino);
blk_cnt = 1;
+ cbc.cnt = 0;
+ cbc.cheader_pgofs = CHEADER_PGOFS_NONE;

if (c.preen_mode == PREEN_MODE_1 && !c.fix_on) {
get_node_info(sbi, ino, &ni);
@@ -1848,7 +1928,8 @@ int fsck_chk_quota_node(struct f2fs_sb_info *sbi)
continue;
}
ret = fsck_chk_node_blk(sbi, NULL, ino,
- F2FS_FT_REG_FILE, TYPE_INODE, &blk_cnt, NULL);
+ F2FS_FT_REG_FILE, TYPE_INODE, &blk_cnt,
+ &cbc, NULL);
if (ret) {
ASSERT_MSG("wrong quota inode, qtype [%d] ino [0x%x]",
qtype, ino);
@@ -2753,6 +2834,7 @@ static int fsck_reconnect_file(struct f2fs_sb_info *sbi)
struct node_info ni;
char *reconnect_bitmap;
u32 blk_cnt;
+ struct f2fs_compr_blk_cnt cbc;
nid_t nid;
int err, cnt = 0, ftype;

@@ -2796,8 +2878,10 @@ static int fsck_reconnect_file(struct f2fs_sb_info *sbi)

DBG(1, "Check inode 0x%x\n", nid);
blk_cnt = 1;
+ cbc.cnt = 0;
+ cbc.cheader_pgofs = CHEADER_PGOFS_NONE;
fsck_chk_inode_blk(sbi, nid, ftype, node,
- &blk_cnt, &ni, NULL);
+ &blk_cnt, &cbc, &ni, NULL);

f2fs_set_bit(nid, reconnect_bitmap);
}
diff --git a/fsck/fsck.h b/fsck/fsck.h
index b9dcd5c..37ff6b2 100644
--- a/fsck/fsck.h
+++ b/fsck/fsck.h
@@ -160,16 +160,20 @@ extern int fsck_sanity_check_nid(struct f2fs_sb_info *, u32,
struct node_info *);
extern int fsck_chk_node_blk(struct f2fs_sb_info *, struct f2fs_inode *, u32,
enum FILE_TYPE, enum NODE_TYPE, u32 *,
- struct child_info *);
+ struct f2fs_compr_blk_cnt *, struct child_info *);
extern void fsck_chk_inode_blk(struct f2fs_sb_info *, u32, enum FILE_TYPE,
- struct f2fs_node *, u32 *, struct node_info *, struct child_info *);
+ struct f2fs_node *, u32 *, struct f2fs_compr_blk_cnt *,
+ struct node_info *, struct child_info *);
extern int fsck_chk_dnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
u32, enum FILE_TYPE, struct f2fs_node *, u32 *,
- struct child_info *, struct node_info *);
+ struct f2fs_compr_blk_cnt *, struct child_info *,
+ struct node_info *);
extern int fsck_chk_idnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
- enum FILE_TYPE, struct f2fs_node *, u32 *, struct child_info *);
+ enum FILE_TYPE, struct f2fs_node *, u32 *,
+ struct f2fs_compr_blk_cnt *, struct child_info *);
extern int fsck_chk_didnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
- enum FILE_TYPE, struct f2fs_node *, u32 *, struct child_info *);
+ enum FILE_TYPE, struct f2fs_node *, u32 *,
+ struct f2fs_compr_blk_cnt *, struct child_info *);
extern int fsck_chk_data_blk(struct f2fs_sb_info *, int,
u32, struct child_info *, int, enum FILE_TYPE, u32, u16, u8, int);
extern int fsck_chk_dentry_blk(struct f2fs_sb_info *, int,
diff --git a/fsck/main.c b/fsck/main.c
index c0b871b..b917d2e 100644
--- a/fsck/main.c
+++ b/fsck/main.c
@@ -812,6 +812,7 @@ static int do_fsck(struct f2fs_sb_info *sbi)
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
u32 flag = le32_to_cpu(ckpt->ckpt_flags);
u32 blk_cnt;
+ struct f2fs_compr_blk_cnt cbc;
errcode_t ret;

fsck_init(sbi);
@@ -859,6 +860,9 @@ static int do_fsck(struct f2fs_sb_info *sbi)

/* Traverse all block recursively from root inode */
blk_cnt = 1;
+ cbc.cnt = 0;
+ cbc.cheader_pgofs = CHEADER_PGOFS_NONE;
+

if (c.feature & cpu_to_le32(F2FS_FEATURE_QUOTA_INO)) {
ret = quota_init_context(sbi);
@@ -869,7 +873,7 @@ static int do_fsck(struct f2fs_sb_info *sbi)
}
fsck_chk_orphan_node(sbi);
fsck_chk_node_blk(sbi, NULL, sbi->root_ino_num,
- F2FS_FT_DIR, TYPE_INODE, &blk_cnt, NULL);
+ F2FS_FT_DIR, TYPE_INODE, &blk_cnt, &cbc, NULL);
fsck_chk_quota_files(sbi);

ret = fsck_verify(sbi);
diff --git a/include/f2fs_fs.h b/include/f2fs_fs.h
index 8969ae2..7a56326 100644
--- a/include/f2fs_fs.h
+++ b/include/f2fs_fs.h
@@ -936,6 +936,21 @@ struct f2fs_extent {
#define F2FS_CASEFOLD_FL 0x40000000 /* Casefolded file */
#define IS_CASEFOLDED(dir) ((dir)->i_flags & F2FS_CASEFOLD_FL)

+/*
+ * fsck i_compr_blocks counting helper
+ */
+struct f2fs_compr_blk_cnt {
+ /* counting i_compr_blocks, init 0 */
+ u32 cnt;
+
+ /*
+ * previous seen compression header (COMPR_ADDR) page offsets,
+ * use CHEADER_PGOFS_NONE for none
+ */
+ u32 cheader_pgofs;
+};
+#define CHEADER_PGOFS_NONE ((u32) -(1<<MAX_COMPRESS_LOG_SIZE))
+
/*
* inode flags
*/
--
2.32.0.93.g670b81a890-goog
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