From 3d4492f81dd7b486f1be0616a1ce7f73760f406e Mon Sep 17 00:00:00 2001
From: Chris Mason <mason@suse.com>
Date: Wed, 1 Feb 2006 03:06:49 -0800
Subject: [PATCH] [PATCH] reiserfs: reiserfs write_ordered_buffers should not
oops on dirty non-uptodate bh
write_ordered_buffers should handle dirty non-uptodate buffers without a
BUG()
Signed-off-by: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
fs/reiserfs/journal.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 1b2402a9a8e1d..47c9f432dea5d 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -846,6 +846,14 @@ static int write_ordered_buffers(spinlock_t * lock,
spin_lock(lock);
goto loop_next;
}
+ /* in theory, dirty non-uptodate buffers should never get here,
+ * but the upper layer io error paths still have a few quirks.
+ * Handle them here as gracefully as we can
+ */
+ if (!buffer_uptodate(bh) && buffer_dirty(bh)) {
+ clear_buffer_dirty(bh);
+ ret = -EIO;
+ }
if (buffer_dirty(bh)) {
list_del_init(&jh->list);
list_add(&jh->list, &tmp);
@@ -1030,9 +1038,12 @@ static int flush_commit_list(struct super_block *s,
}
if (!list_empty(&jl->j_bh_list)) {
+ int ret;
unlock_kernel();
- write_ordered_buffers(&journal->j_dirty_buffers_lock,
- journal, jl, &jl->j_bh_list);
+ ret = write_ordered_buffers(&journal->j_dirty_buffers_lock,
+ journal, jl, &jl->j_bh_list);
+ if (ret < 0 && retval == 0)
+ retval = ret;
lock_kernel();
}
BUG_ON(!list_empty(&jl->j_bh_list));
--
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