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authorEric Sandeen <sandeen@redhat.com>2008-10-18 20:28:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:38 -0700
commitcdbf6dba28e8e6268c8420857696309470009fd9 (patch)
treeab41f3c567a5e94f3c0e500ab796ad3bdd38806c /fs/ext3/dir.c
parent5ec8b75e3a2a94860ee99b5456fe1a963c8680e5 (diff)
downloadop-kernel-dev-cdbf6dba28e8e6268c8420857696309470009fd9.zip
op-kernel-dev-cdbf6dba28e8e6268c8420857696309470009fd9.tar.gz
ext3: avoid printk floods in the face of directory corruption
A very large directory with many read failures (either due to storage problems, or due to invalid size & blocks from corruption) will generate a printk storm as the filesystem continues to try to read all the blocks. This flood of messages can tie up the box until it is complete - which may be a very long time, especially for very large corrupted values. This is fixed by only reporting the corruption once each time we try to read the directory. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Eugene Teo <eugeneteo@kernel.sg> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3/dir.c')
-rw-r--r--fs/ext3/dir.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c
index 28b681e..4c82531 100644
--- a/fs/ext3/dir.c
+++ b/fs/ext3/dir.c
@@ -102,6 +102,7 @@ static int ext3_readdir(struct file * filp,
int err;
struct inode *inode = filp->f_path.dentry->d_inode;
int ret = 0;
+ int dir_has_error = 0;
sb = inode->i_sb;
@@ -148,9 +149,12 @@ static int ext3_readdir(struct file * filp,
* of recovering data when there's a bad sector
*/
if (!bh) {
- ext3_error (sb, "ext3_readdir",
- "directory #%lu contains a hole at offset %lu",
- inode->i_ino, (unsigned long)filp->f_pos);
+ if (!dir_has_error) {
+ ext3_error(sb, __func__, "directory #%lu "
+ "contains a hole at offset %lld",
+ inode->i_ino, filp->f_pos);
+ dir_has_error = 1;
+ }
/* corrupt size? Maybe no more blocks to read */
if (filp->f_pos > inode->i_blocks << 9)
break;
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