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Message-Id: <1524145146-18356-1-git-send-email-wshilong1991@gmail.com>
Date: Thu, 19 Apr 2018 22:39:05 +0900
From: Wang Shilong <wangshilong1991@...il.com>
To: linux-ext4@...r.kernel.org
Cc: wshilong@....com, adilger@...ger.ca, sihara@....com, tytso@....edu
Subject: [PATCH 1/2] ext4: wrap error handling and corrupted bitmaps setting
From: Wang Shilong <wshilong@....com>
Cleanup to handle ext4 error codes together with
bitmaps corrupted bits setting.
Signed-off-by: Wang Shilong <wshilong@....com>
---
fs/ext4/balloc.c | 30 +++++++++++++++++-------------
fs/ext4/ext4.h | 35 ++++++++++++++++++++++++-----------
fs/ext4/ialloc.c | 37 +++++++++++++++++++------------------
fs/ext4/mballoc.c | 20 ++++++++------------
fs/ext4/super.c | 11 +++++++----
5 files changed, 75 insertions(+), 58 deletions(-)
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 8ef65251d019..76ae05993390 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -193,7 +193,9 @@ static int ext4_init_block_bitmap(struct super_block *sb,
if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
ext4_mark_group_bitmap_corrupted(sb, block_group,
EXT4_GROUP_INFO_BBITMAP_CORRUPT |
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "bg %u: bad block bitmap checksum",
+ block_group);
return -EFSBADCRC;
}
memset(bh->b_data, 0, sb->s_blocksize);
@@ -374,18 +376,19 @@ static int ext4_validate_block_bitmap(struct super_block *sb,
if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group,
desc, bh))) {
ext4_unlock_group(sb, block_group);
- ext4_error(sb, "bg %u: bad block bitmap checksum", block_group);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
+ "bg %u: bad block bitmap checksum",
+ block_group);
return -EFSBADCRC;
}
blk = ext4_valid_block_bitmap(sb, desc, block_group, bh);
if (unlikely(blk != 0)) {
ext4_unlock_group(sb, block_group);
- ext4_error(sb, "bg %u: block %llu: invalid block bitmap",
- block_group, blk);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
+ "bg %u: block %llu: invalid block bitmap",
+ block_group, blk);
return -EFSCORRUPTED;
}
set_buffer_verified(bh);
@@ -418,10 +421,10 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
bitmap_blk = ext4_block_bitmap(sb, desc);
if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
(bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
- ext4_error(sb, "Invalid block bitmap block %llu in "
- "block_group %u", bitmap_blk, block_group);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
+ "Invalid block bitmap block %llu in "
+ "block_group %u", bitmap_blk, block_group);
return ERR_PTR(-EFSCORRUPTED);
}
bh = sb_getblk(sb, bitmap_blk);
@@ -497,11 +500,12 @@ int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group,
return -EFSCORRUPTED;
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
- ext4_error(sb, "Cannot read block bitmap - "
- "block_group = %u, block_bitmap = %llu",
- block_group, (unsigned long long) bh->b_blocknr);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
+ "Cannot read block bitmap - "
+ "block_group = %u, block_bitmap = %llu",
+ block_group,
+ (unsigned long long)bh->b_blocknr);
return -EIO;
}
clear_buffer_new(bh);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index fa52b7dd4542..ed5b988d3f8e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2530,9 +2530,9 @@ extern int ext4_alloc_flex_bg_array(struct super_block *sb,
ext4_group_t ngroup);
extern const char *ext4_decode_error(struct super_block *sb, int errno,
char nbuf[16]);
-extern void ext4_mark_group_bitmap_corrupted(struct super_block *sb,
- ext4_group_t block_group,
- unsigned int flags);
+extern void __ext4_mark_group_bitmap_corrupted(struct super_block *sb,
+ ext4_group_t block_group,
+ unsigned int flags);
extern __printf(4, 5)
void __ext4_error(struct super_block *, const char *, unsigned int,
@@ -2558,10 +2558,10 @@ extern __printf(3, 4)
void __ext4_msg(struct super_block *, const char *, const char *, ...);
extern void __dump_mmp_msg(struct super_block *, struct mmp_struct *mmp,
const char *, unsigned int, const char *);
-extern __printf(7, 8)
+extern __printf(8, 9)
void __ext4_grp_locked_error(const char *, unsigned int,
struct super_block *, ext4_group_t,
- unsigned long, ext4_fsblk_t,
+ unsigned long, ext4_fsblk_t, unsigned int,
const char *, ...);
#define EXT4_ERROR_INODE(inode, fmt, a...) \
@@ -2591,9 +2591,16 @@ void __ext4_grp_locked_error(const char *, unsigned int,
__ext4_msg(sb, level, fmt, ##__VA_ARGS__)
#define dump_mmp_msg(sb, mmp, msg) \
__dump_mmp_msg(sb, mmp, __func__, __LINE__, msg)
-#define ext4_grp_locked_error(sb, grp, ino, block, fmt, ...) \
- __ext4_grp_locked_error(__func__, __LINE__, sb, grp, ino, block, \
- fmt, ##__VA_ARGS__)
+#define ext4_grp_locked_error(sb, grp, ino, block, flags, fmt, ...) \
+ __ext4_grp_locked_error(__func__, __LINE__, sb, grp, ino, block,\
+ flags, fmt, ##__VA_ARGS__)
+#define ext4_mark_group_bitmap_corrupted(sb, group, flags, fmt, ...) \
+ do { \
+ __ext4_error(sb, __func__, __LINE__, \
+ fmt, ##__VA_ARGS__); \
+ __ext4_mark_group_bitmap_corrupted(sb, group, flags); \
+ } while (0)
+
#else
@@ -2634,11 +2641,17 @@ do { \
} while (0)
#define dump_mmp_msg(sb, mmp, msg) \
__dump_mmp_msg(sb, mmp, "", 0, "")
-#define ext4_grp_locked_error(sb, grp, ino, block, fmt, ...) \
+#define ext4_grp_locked_error(sb, grp, ino, block, flags, fmt, ...) \
do { \
- no_printk(fmt, ##__VA_ARGS__); \
- __ext4_grp_locked_error("", 0, sb, grp, ino, block, " "); \
+ no_printk(fmt, ##__VA_ARGS__); \
+ __ext4_grp_locked_error("", 0, sb, grp, ino, block, flags, " ");\
} while (0)
+#define ext4_mark_group_bitmap_corrupted(sb, group, flags, fmt, ...) \
+ do { \
+ no_printk(fmt, ##__VA_ARGS__); \
+ __ext4_error(sb, "", 0, " "); \
+ __ext4_mark_group_bitmap_corrupted(sb, group, flags); \
+ } while (0)
#endif
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 4d6e007f3569..b7f729995978 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -94,10 +94,10 @@ static int ext4_validate_inode_bitmap(struct super_block *sb,
if (!ext4_inode_bitmap_csum_verify(sb, block_group, desc, bh,
EXT4_INODES_PER_GROUP(sb) / 8)) {
ext4_unlock_group(sb, block_group);
- ext4_error(sb, "Corrupt inode bitmap - block_group = %u, "
- "inode_bitmap = %llu", block_group, blk);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "Corrupt inode bitmap - block_group = %u, "
+ "inode_bitmap = %llu", block_group, blk);
return -EFSBADCRC;
}
set_buffer_verified(bh);
@@ -127,10 +127,10 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
bitmap_blk = ext4_inode_bitmap(sb, desc);
if ((bitmap_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
(bitmap_blk >= ext4_blocks_count(sbi->s_es))) {
- ext4_error(sb, "Invalid inode bitmap blk %llu in "
- "block_group %u", bitmap_blk, block_group);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "Invalid inode bitmap blk %llu in "
+ "block_group %u", bitmap_blk, block_group);
return ERR_PTR(-EFSCORRUPTED);
}
bh = sb_getblk(sb, bitmap_blk);
@@ -182,11 +182,11 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
put_bh(bh);
- ext4_error(sb, "Cannot read inode bitmap - "
- "block_group = %u, inode_bitmap = %llu",
- block_group, bitmap_blk);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "Cannot read inode bitmap - "
+ "block_group = %u, inode_bitmap = %llu",
+ block_group, bitmap_blk);
return ERR_PTR(-EIO);
}
@@ -333,9 +333,10 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
if (!fatal)
fatal = err;
} else {
- ext4_error(sb, "bit already cleared for inode %lu", ino);
ext4_mark_group_bitmap_corrupted(sb, block_group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "bit already cleared for inode %lu",
+ ino);
}
error_return:
@@ -904,10 +905,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
goto next_group;
if (group == 0 && (ino + 1) < EXT4_FIRST_INO(sb)) {
- ext4_error(sb, "reserved inode found cleared - "
- "inode=%lu", ino + 1);
ext4_mark_group_bitmap_corrupted(sb, group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "reserved inode found cleared - "
+ "inode=%lu", ino + 1);
goto next_group;
}
@@ -1097,10 +1098,10 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
* twice.
*/
err = -EIO;
- ext4_error(sb, "failed to insert inode %lu: doubly allocated?",
- inode->i_ino);
ext4_mark_group_bitmap_corrupted(sb, group,
- EXT4_GROUP_INFO_IBITMAP_CORRUPT);
+ EXT4_GROUP_INFO_IBITMAP_CORRUPT,
+ "failed to insert inode %lu: doubly allocated?",
+ inode->i_ino);
goto out;
}
inode->i_generation = prandom_u32();
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 0d473991eebd..065bce671de4 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -467,11 +467,10 @@ static void mb_free_blocks_double(struct inode *inode, struct ext4_buddy *e4b,
ext4_grp_locked_error(sb, e4b->bd_group,
inode ? inode->i_ino : 0,
blocknr,
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
"freeing block already freed "
"(bit %u)",
first + i);
- ext4_mark_group_bitmap_corrupted(sb, e4b->bd_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
}
mb_clear_bit(first + i, e4b->bd_info->bb_bitmap);
}
@@ -741,6 +740,7 @@ void ext4_mb_generate_buddy(struct super_block *sb,
if (free != grp->bb_free) {
ext4_grp_locked_error(sb, group, 0, 0,
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
"block bitmap and bg descriptor "
"inconsistent: %u vs %u free clusters",
free, grp->bb_free);
@@ -749,8 +749,6 @@ void ext4_mb_generate_buddy(struct super_block *sb,
* corrupt and update bb_free using bitmap value
*/
grp->bb_free = free;
- ext4_mark_group_bitmap_corrupted(sb, group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
}
mb_set_largest_free_order(sb, grp);
@@ -1451,11 +1449,10 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
ext4_grp_locked_error(sb, e4b->bd_group,
inode ? inode->i_ino : 0,
blocknr,
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
"freeing already freed block "
"(bit %u); block bitmap corrupt.",
block);
- ext4_mark_group_bitmap_corrupted(sb, e4b->bd_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
mb_regenerate_buddy(e4b);
goto done;
}
@@ -1949,11 +1946,10 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
* we have free blocks
*/
ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
"%d free clusters as per "
"group info. But bitmap says 0",
free);
- ext4_mark_group_bitmap_corrupted(sb, e4b->bd_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
break;
}
@@ -1961,11 +1957,10 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
BUG_ON(ex.fe_len <= 0);
if (free < ex.fe_len) {
ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
+ EXT4_GROUP_INFO_BBITMAP_CORRUPT,
"%d free clusters as per "
"group info. But got %d blocks",
free, ex.fe_len);
- ext4_mark_group_bitmap_corrupted(sb, e4b->bd_group,
- EXT4_GROUP_INFO_BBITMAP_CORRUPT);
/*
* The number of free blocks differs. This mostly
* indicate that the bitmap is corrupt. So exit
@@ -3851,7 +3846,8 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh,
pa, (unsigned long) pa->pa_lstart,
(unsigned long) pa->pa_pstart,
(unsigned long) pa->pa_len);
- ext4_grp_locked_error(sb, group, 0, 0, "free %u, pa_free %u",
+ ext4_grp_locked_error(sb, group, 0, 0, 0,
+ "free %u, pa_free %u",
free, pa->pa_free);
/*
* pa is already deleted so we use the value obtained
@@ -4679,7 +4675,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
else {
ext4_grp_locked_error(sb, group, 0,
ext4_group_first_block_no(sb, group) +
- EXT4_C2B(sbi, cluster),
+ EXT4_C2B(sbi, cluster), 0,
"Block already on to-be-freed list");
return 0;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index f5e9a1af067a..96981df03385 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -709,7 +709,7 @@ void __ext4_warning_inode(const struct inode *inode, const char *function,
void __ext4_grp_locked_error(const char *function, unsigned int line,
struct super_block *sb, ext4_group_t grp,
unsigned long ino, ext4_fsblk_t block,
- const char *fmt, ...)
+ unsigned int flags, const char *fmt, ...)
__releases(bitlock)
__acquires(bitlock)
{
@@ -740,6 +740,9 @@ __acquires(bitlock)
va_end(args);
}
+ if (flags)
+ __ext4_mark_group_bitmap_corrupted(sb, grp, flags);
+
if (test_opt(sb, ERRORS_CONT)) {
ext4_commit_super(sb, 0);
return;
@@ -763,9 +766,9 @@ __acquires(bitlock)
return;
}
-void ext4_mark_group_bitmap_corrupted(struct super_block *sb,
- ext4_group_t group,
- unsigned int flags)
+void __ext4_mark_group_bitmap_corrupted(struct super_block *sb,
+ ext4_group_t group,
+ unsigned int flags)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_group_info *grp = ext4_get_group_info(sb, group);
--
2.14.3
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