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Btrfs: ratelimit the generation printk for the free space cache

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A user reported getting spammed when moving to 3.0 by this message.  Since we
switched to the normal checksumming infrastructure all old free space caches
will be wrong and need to be regenerated so people are likely to see this
message a lot, so ratelimit it so it doesn't fill up their logs and freak them
out.  Thanks,

Reported-by: Andrew Lutomirski <luto@mit.edu>
Signed-off-by: Josef Bacik <josef@redhat.com>
This commit is contained in:
Josef Bacik 2011-08-08 08:24:46 -04:00
parent 4289a667a0
commit 6ab60601d5
1 changed files with 7 additions and 5 deletions
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12
fs/btrfs/free-space-cache.c
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@ -20,6 +20,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/math64.h>
#include <linux/ratelimit.h>
#include "ctree.h"
#include "free-space-cache.h"
#include "transaction.h"
@ -341,11 +342,12 @@ int __load_free_space_cache(struct btrfs_root *root, struct inode *inode,
gen = addr;
if (*gen != BTRFS_I(inode)->generation) {
printk(KERN_ERR "btrfs: space cache generation"
" (%llu) does not match inode (%llu)\n",
(unsigned long long)*gen,
(unsigned long long)
BTRFS_I(inode)->generation);
printk_ratelimited(KERN_ERR "btrfs: space cache"
" generation (%llu) does not match "
"inode (%llu)\n",
(unsigned long long)*gen,
(unsigned long long)
BTRFS_I(inode)->generation);
kunmap(page);
unlock_page(page);
page_cache_release(page);