summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--fs/ext3/super.c24
-rw-r--r--fs/jbd/journal.c30
2 files changed, 51 insertions, 3 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 5dbf4db..3ef2724 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -2361,6 +2361,21 @@ static int ext3_commit_super(struct super_block *sb,
if (!sbh)
return error;
+
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ ext3_msg(sb, KERN_ERR, "previous I/O error to "
+ "superblock detected");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
/*
* If the file system is mounted read-only, don't update the
* superblock write time. This avoids updating the superblock
@@ -2377,8 +2392,15 @@ static int ext3_commit_super(struct super_block *sb,
es->s_free_inodes_count = cpu_to_le32(ext3_count_free_inodes(sb));
BUFFER_TRACE(sbh, "marking dirty");
mark_buffer_dirty(sbh);
- if (sync)
+ if (sync) {
error = sync_dirty_buffer(sbh);
+ if (buffer_write_io_error(sbh)) {
+ ext3_msg(sb, KERN_ERR, "I/O error while writing "
+ "superblock");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+ }
return error;
}
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index d7a8693..e561176 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -85,6 +85,7 @@ EXPORT_SYMBOL(journal_force_commit);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
+static const char *journal_dev_name(journal_t *journal, char *buffer);
/*
* Helper function used to manage commit timeouts
@@ -1011,6 +1012,23 @@ void journal_update_superblock(journal_t *journal, int wait)
goto out;
}
+ if (buffer_write_io_error(bh)) {
+ char b[BDEVNAME_SIZE];
+ /*
+ * Oh, dear. A previous attempt to write the journal
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ printk(KERN_ERR "JBD: previous I/O error detected "
+ "for journal superblock update for %s.\n",
+ journal_dev_name(journal, b));
+ clear_buffer_write_io_error(bh);
+ set_buffer_uptodate(bh);
+ }
+
spin_lock(&journal->j_state_lock);
jbd_debug(1,"JBD: updating superblock (start %u, seq %d, errno %d)\n",
journal->j_tail, journal->j_tail_sequence, journal->j_errno);
@@ -1022,9 +1040,17 @@ void journal_update_superblock(journal_t *journal, int wait)
BUFFER_TRACE(bh, "marking dirty");
mark_buffer_dirty(bh);
- if (wait)
+ if (wait) {
sync_dirty_buffer(bh);
- else
+ if (buffer_write_io_error(bh)) {
+ char b[BDEVNAME_SIZE];
+ printk(KERN_ERR "JBD: I/O error detected "
+ "when updating journal superblock for %s.\n",
+ journal_dev_name(journal, b));
+ clear_buffer_write_io_error(bh);
+ set_buffer_uptodate(bh);
+ }
+ } else
write_dirty_buffer(bh, WRITE);
out:
OpenPOWER on IntegriCloud