btrfs: Ratelimit "no csum found" info message

Recently during a crash it became apparent that this particular message
can be printed so many times that it causes the softlockup detector to
trigger. Fix it by ratelimiting it.

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: David Sterba <dsterba@suse.com>
(cherry picked from commit aee133afcdf77641be66c5c9f32975feca8e6bd0)

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 16f4bcfa8f16dc6c4a25973e5b3ef62ba864ca6e..26dc0f20f9074e54fadbc70bb08d32d559da294d 100644 (file)
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -249,7 +249,7 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root,
                                                offset + root->sectorsize - 1,
                                                EXTENT_NODATASUM, GFP_NOFS);
                                } else {
-                                       btrfs_info(BTRFS_I(inode)->root->fs_info,
+                                       btrfs_info_rl(BTRFS_I(inode)->root->fs_info,
                                                   "no csum found for inode %llu start %llu",
                                               btrfs_ino(inode), offset);
                                }