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quota: Use %pV and __attribute__((format (printf in __quota_error and fix fallout

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Use %pV in __quota_error so a single printk can not be
interleaved with other logging messages.
Add __attribute__((format (printf, 3, 4))) so format
and arguments can be verified by compiler.
Make sure printk formats and arguments match.

Block # needed a pointer dereference.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Joe Perches 2010-11-23 18:49:54 -08:00 committed by Jan Kara
parent 9c52749232
commit 055adcbd7d
3 changed files with 19 additions and 13 deletions
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18
fs/quota/dquot.c
View File

@ -133,16 +133,20 @@ __cacheline_aligned_in_smp DEFINE_SPINLOCK(dq_data_lock);
EXPORT_SYMBOL(dq_data_lock);
void __quota_error(struct super_block *sb, const char *func,
const char *fmt, ...)
const char *fmt, ...)
{
va_list args;
if (printk_ratelimit()) {
va_list args;
struct va_format vaf;
va_start(args, fmt);
printk(KERN_ERR "Quota error (device %s): %s: ",
sb->s_id, func);
vprintk(fmt, args);
printk("\n");
vaf.fmt = fmt;
vaf.va = &args;
printk(KERN_ERR "Quota error (device %s): %s: %pV\n",
sb->s_id, func, &vaf);
va_end(args);
}
}

9
fs/quota/quota_tree.c
View File

@ -468,8 +468,8 @@ static int remove_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
return -ENOMEM;
ret = read_blk(info, *blk, buf);
if (ret < 0) {
quota_error(dquot->dq_sb, "Can't read quota data "
"block %u", blk);
quota_error(dquot->dq_sb, "Can't read quota data block %u",
*blk);
goto out_buf;
}
newblk = le32_to_cpu(ref[get_index(info, dquot->dq_id, depth)]);
@ -493,8 +493,9 @@ static int remove_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
} else {
ret = write_blk(info, *blk, buf);
if (ret < 0)
quota_error(dquot->dq_sb, "Can't write quota "
"tree block %u", blk);
quota_error(dquot->dq_sb,
"Can't write quota tree block %u",
*blk);
}
}
out_buf:

5
include/linux/quotaops.h
View File

@ -31,8 +31,9 @@ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
#define quota_error(sb, fmt, args...) \
__quota_error((sb), __func__, fmt , ## args)
extern void __quota_error(struct super_block *sb, const char *func,
const char *fmt, ...);
extern __attribute__((format (printf, 3, 4)))
void __quota_error(struct super_block *sb, const char *func,
const char *fmt, ...);
/*
* declaration of quota_function calls in kernel.