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authorChris Mason <chris.mason@oracle.com>2009-04-27 07:29:05 -0400
committerChris Mason <chris.mason@oracle.com>2009-04-27 07:41:47 -0400
commit193f284d4985db0370a8a1bbdfb20df548cf9ffb (patch)
treedfa8aec1c8000e5e00deb4eee4dc385a405d74a6 /fs
parentb7967db75a38df4891b22efe1b0969b9357eb946 (diff)
downloadlwn-193f284d4985db0370a8a1bbdfb20df548cf9ffb.tar.gz
lwn-193f284d4985db0370a8a1bbdfb20df548cf9ffb.zip
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>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/disk-io.c38
-rw-r--r--fs/btrfs/inode.c10
2 files changed, 31 insertions, 17 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 77f9a3b824be..aa0c259b9c28 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -232,10 +232,14 @@ static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
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 @@ static int verify_parent_transid(struct extent_io_tree *io_tree,
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 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
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 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end,
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;
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2fdb2995be64..552e08afc7fb 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1823,10 +1823,12 @@ good:
return 0;
zeroit:
- printk(KERN_INFO "btrfs csum failed ino %lu off %llu csum %u "
- "private %llu\n", page->mapping->host->i_ino,
- (unsigned long long)start, csum,
- (unsigned long long)private);
+ if (printk_ratelimit()) {
+ printk(KERN_INFO "btrfs csum failed ino %lu off %llu csum %u "
+ "private %llu\n", page->mapping->host->i_ino,
+ (unsigned long long)start, csum,
+ (unsigned long long)private);
+ }
memset(kaddr + offset, 1, end - start + 1);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);