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Date: Fri, 2 Jul 2010 14:46:53 -0400
From: Theodore Ts'o <tytso@....edu>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc: Theodore Ts'o <tytso@....edu>
Subject: [PATCH 3/8] ext4: Enhance ext4_grp_locked_error() to take block and function numbers
Also use a macro definition so that __func__ and __LINE__ is implicit.
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
fs/ext4/ext4.h | 10 +++++++---
fs/ext4/inode.c | 13 +++++++------
fs/ext4/mballoc.c | 41 +++++++++++++++++++++--------------------
fs/ext4/super.c | 13 ++++++++++---
4 files changed, 45 insertions(+), 32 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index d8ec824..5a41881 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1639,9 +1639,13 @@ extern void __ext4_warning(struct super_block *, const char *,
#define ext4_warning(sb, message...) __ext4_warning(sb, __func__, ## message)
extern void ext4_msg(struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
-extern void ext4_grp_locked_error(struct super_block *, ext4_group_t,
- const char *, const char *, ...)
- __attribute__ ((format (printf, 4, 5)));
+extern void __ext4_grp_locked_error(const char *, unsigned int, \
+ struct super_block *, ext4_group_t, \
+ unsigned long, ext4_fsblk_t, \
+ const char *, ...)
+ __attribute__ ((format (printf, 7, 8)));
+#define ext4_grp_locked_error(sb, grp, message...) \
+ __ext4_grp_locked_error(__func__, __LINE__, (sb), (grp), ## message)
extern void ext4_update_dynamic_rev(struct super_block *sb);
extern int ext4_update_compat_feature(handle_t *handle, struct super_block *sb,
__u32 compat);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b485987..64baadb 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1128,8 +1128,8 @@ void ext4_da_update_reserve_space(struct inode *inode,
ext4_discard_preallocations(inode);
}
-static int check_block_validity(struct inode *inode, const char *func,
- struct ext4_map_blocks *map)
+static int __check_block_validity(struct inode *inode, const char *func,
+ struct ext4_map_blocks *map)
{
if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,
map->m_len)) {
@@ -1142,6 +1142,9 @@ static int check_block_validity(struct inode *inode, const char *func,
return 0;
}
+#define check_block_validity(inode, map) \
+ __check_block_validity((inode), __func__, (map))
+
/*
* Return the number of contiguous dirty pages in a given inode
* starting at page frame idx.
@@ -1244,7 +1247,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
up_read((&EXT4_I(inode)->i_data_sem));
if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
- int ret = check_block_validity(inode, __func__, map);
+ int ret = check_block_validity(inode, map);
if (ret != 0)
return ret;
}
@@ -1324,9 +1327,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
up_write((&EXT4_I(inode)->i_data_sem));
if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
- int ret = check_block_validity(inode,
- "ext4_map_blocks_after_alloc",
- map);
+ int ret = check_block_validity(inode, map);
if (ret != 0)
return ret;
}
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index b2948b0..3dfad95 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -446,10 +446,11 @@ static void mb_free_blocks_double(struct inode *inode, struct ext4_buddy *e4b,
blocknr = ext4_group_first_block_no(sb, e4b->bd_group);
blocknr += first + i;
ext4_grp_locked_error(sb, e4b->bd_group,
- __func__, "double-free of inode"
- " %lu's block %llu(bit %u in group %u)",
- inode ? inode->i_ino : 0, blocknr,
- first + i, e4b->bd_group);
+ inode ? inode->i_ino : 0,
+ blocknr,
+ "freeing block already freed "
+ "(bit %u)",
+ first + i);
}
mb_clear_bit(first + i, e4b->bd_info->bb_bitmap);
}
@@ -712,9 +713,9 @@ void ext4_mb_generate_buddy(struct super_block *sb,
grp->bb_fragments = fragments;
if (free != grp->bb_free) {
- ext4_grp_locked_error(sb, group, __func__,
- "EXT4-fs: group %u: %u blocks in bitmap, %u in gd",
- group, free, grp->bb_free);
+ ext4_grp_locked_error(sb, group, 0, 0,
+ "%u blocks in bitmap, %u in gd",
+ free, grp->bb_free);
/*
* If we intent to continue, we consider group descritor
* corrupt and update bb_free using bitmap value
@@ -1296,10 +1297,10 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
blocknr = ext4_group_first_block_no(sb, e4b->bd_group);
blocknr += block;
ext4_grp_locked_error(sb, e4b->bd_group,
- __func__, "double-free of inode"
- " %lu's block %llu(bit %u in group %u)",
- inode ? inode->i_ino : 0, blocknr, block,
- e4b->bd_group);
+ inode ? inode->i_ino : 0,
+ blocknr,
+ "freeing already freed block "
+ "(bit %u)", block);
}
mb_clear_bit(block, EXT4_MB_BITMAP(e4b));
e4b->bd_info->bb_counters[order]++;
@@ -1788,8 +1789,8 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
* free blocks even though group info says we
* we have free blocks
*/
- ext4_grp_locked_error(sb, e4b->bd_group,
- __func__, "%d free blocks as per "
+ ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
+ "%d free blocks as per "
"group info. But bitmap says 0",
free);
break;
@@ -1798,8 +1799,8 @@ void ext4_mb_complex_scan_group(struct ext4_allocation_context *ac,
mb_find_extent(e4b, 0, i, ac->ac_g_ex.fe_len, &ex);
BUG_ON(ex.fe_len <= 0);
if (free < ex.fe_len) {
- ext4_grp_locked_error(sb, e4b->bd_group,
- __func__, "%d free blocks as per "
+ ext4_grp_locked_error(sb, e4b->bd_group, 0, 0,
+ "%d free blocks as per "
"group info. But got %d blocks",
free, ex.fe_len);
/*
@@ -3584,8 +3585,7 @@ 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,
- __func__, "free %u, pa_free %u",
+ ext4_grp_locked_error(sb, group, 0, 0, "free %u, pa_free %u",
free, pa->pa_free);
/*
* pa is already deleted so we use the value obtained
@@ -4395,6 +4395,7 @@ static noinline_for_stack int
ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
struct ext4_free_data *new_entry)
{
+ ext4_group_t group = e4b->bd_group;
ext4_grpblk_t block;
struct ext4_free_data *entry;
struct ext4_group_info *db = e4b->bd_info;
@@ -4427,9 +4428,9 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
else if (block >= (entry->start_blk + entry->count))
n = &(*n)->rb_right;
else {
- ext4_grp_locked_error(sb, e4b->bd_group, __func__,
- "Double free of blocks %d (%d %d)",
- block, entry->start_blk, entry->count);
+ ext4_grp_locked_error(sb, group, 0,
+ ext4_group_first_block_no(sb, group) + block,
+ "Block already on to-be-freed list");
return 0;
}
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 11441e4..39aeb45 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -514,8 +514,10 @@ void __ext4_warning(struct super_block *sb, const char *function,
va_end(args);
}
-void ext4_grp_locked_error(struct super_block *sb, ext4_group_t grp,
- const char *function, const char *fmt, ...)
+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, ...)
__releases(bitlock)
__acquires(bitlock)
{
@@ -523,7 +525,12 @@ __acquires(bitlock)
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
va_start(args, fmt);
- printk(KERN_CRIT "EXT4-fs error (device %s): %s: ", sb->s_id, function);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s:%d: group %u",
+ sb->s_id, function, line, grp);
+ if (ino)
+ printk("inode %lu: ", ino);
+ if (block)
+ printk("block %llu:", (unsigned long long) block);
vprintk(fmt, args);
printk("\n");
va_end(args);
--
1.7.0.4
--
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