Btrfs: ratelimit IO error printks
Btrfs has printks for various IO errors, including bad checksums and
mismatches between what we expect the block headers to contain and what
we actually find on the disk.
Longer term we need a real reporting mechanism for this, but for now
printk is going to have to do.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 77f9a3b..aa0c259 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -232,10 +232,14 @@
memcpy(&found, result, csum_size);
read_extent_buffer(buf, &val, 0, csum_size);
- printk(KERN_INFO "btrfs: %s checksum verify failed "
- "on %llu wanted %X found %X level %d\n",
- root->fs_info->sb->s_id,
- buf->start, val, found, btrfs_header_level(buf));
+ if (printk_ratelimit()) {
+ printk(KERN_INFO "btrfs: %s checksum verify "
+ "failed on %llu wanted %X found %X "
+ "level %d\n",
+ root->fs_info->sb->s_id,
+ (unsigned long long)buf->start, val, found,
+ btrfs_header_level(buf));
+ }
if (result != (char *)&inline_result)
kfree(result);
return 1;
@@ -268,10 +272,13 @@
ret = 0;
goto out;
}
- printk("parent transid verify failed on %llu wanted %llu found %llu\n",
- (unsigned long long)eb->start,
- (unsigned long long)parent_transid,
- (unsigned long long)btrfs_header_generation(eb));
+ if (printk_ratelimit()) {
+ printk("parent transid verify failed on %llu wanted %llu "
+ "found %llu\n",
+ (unsigned long long)eb->start,
+ (unsigned long long)parent_transid,
+ (unsigned long long)btrfs_header_generation(eb));
+ }
ret = 1;
clear_extent_buffer_uptodate(io_tree, eb);
out:
@@ -415,9 +422,12 @@
found_start = btrfs_header_bytenr(eb);
if (found_start != start) {
- printk(KERN_INFO "btrfs bad tree block start %llu %llu\n",
- (unsigned long long)found_start,
- (unsigned long long)eb->start);
+ if (printk_ratelimit()) {
+ printk(KERN_INFO "btrfs bad tree block start "
+ "%llu %llu\n",
+ (unsigned long long)found_start,
+ (unsigned long long)eb->start);
+ }
ret = -EIO;
goto err;
}
@@ -429,8 +439,10 @@
goto err;
}
if (check_tree_block_fsid(root, eb)) {
- printk(KERN_INFO "btrfs bad fsid on block %llu\n",
- (unsigned long long)eb->start);
+ if (printk_ratelimit()) {
+ printk(KERN_INFO "btrfs bad fsid on block %llu\n",
+ (unsigned long long)eb->start);
+ }
ret = -EIO;
goto err;
}