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authorTheodore Ts'o <tytso@mit.edu>2011-09-04 10:18:14 -0400
committerTheodore Ts'o <tytso@mit.edu>2011-09-04 10:18:14 -0400
commit9ea7a0df63630ad8197716cd313ea66e28906fc0 (patch)
tree2f9cb8bb3f4c709aa666c7863b496f2757b261fb /fs/ext4/ext4_jbd2.c
parent56889787cfa77dfd96f0b3a3e6a4f26c2e4a5134 (diff)
downloadlinux-linaro-stable-9ea7a0df63630ad8197716cd313ea66e28906fc0.tar.gz
jbd2: add debugging information to jbd2_journal_dirty_metadata()
Add debugging information in case jbd2_journal_dirty_metadata() is called with a buffer_head which didn't have jbd2_journal_get_write_access() called on it, or if the journal_head has the wrong transaction in it. In addition, return an error code. This won't change anything for ocfs2, which will BUG_ON() the non-zero exit code. For ext4, the caller of this function is ext4_handle_dirty_metadata(), and on seeing a non-zero return code, will call __ext4_journal_stop(), which will print the function and line number of the (buggy) calling function and abort the journal. This will allow us to recover instead of bug halting, which is better from a robustness and reliability point of view. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.c')
-rw-r--r--fs/ext4/ext4_jbd2.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index f5240aa15601..aca179017582 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -109,9 +109,11 @@ int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
if (ext4_handle_valid(handle)) {
err = jbd2_journal_dirty_metadata(handle, bh);
- if (err)
- ext4_journal_abort_handle(where, line, __func__,
- bh, handle, err);
+ if (err) {
+ /* Errors can only happen if there is a bug */
+ handle->h_err = err;
+ __ext4_journal_stop(where, line, handle);
+ }
} else {
if (inode)
mark_buffer_dirty_inode(bh, inode);