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-rw-r--r--fs/jbd/checkpoint.c4
-rw-r--r--fs/jbd/commit.c8
-rw-r--r--fs/jbd/journal.c44
-rw-r--r--fs/jbd/recovery.c2
-rw-r--r--fs/jbd/transaction.c6
5 files changed, 44 insertions, 20 deletions
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index 05a38b9..e4b87bc 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -221,7 +221,7 @@ restart:
goto restart;
}
if (buffer_locked(bh)) {
- atomic_inc(&bh->b_count);
+ get_bh(bh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
wait_on_buffer(bh);
@@ -283,7 +283,7 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
int ret = 0;
if (buffer_locked(bh)) {
- atomic_inc(&bh->b_count);
+ get_bh(bh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
wait_on_buffer(bh);
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 85a6883..34a4861 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -587,13 +587,13 @@ void journal_commit_transaction(journal_t *journal)
/* Bump b_count to prevent truncate from stumbling over
the shadowed buffer! @@@ This can go if we ever get
rid of the BJ_IO/BJ_Shadow pairing of buffers. */
- atomic_inc(&jh2bh(jh)->b_count);
+ get_bh(jh2bh(jh));
/* Make a temporary IO buffer with which to write it out
(this will requeue both the metadata buffer and the
temporary IO buffer). new_bh goes on BJ_IO*/
- set_bit(BH_JWrite, &jh2bh(jh)->b_state);
+ set_buffer_jwrite(jh2bh(jh));
/*
* akpm: journal_write_metadata_buffer() sets
* new_bh->b_transaction to commit_transaction.
@@ -603,7 +603,7 @@ void journal_commit_transaction(journal_t *journal)
JBUFFER_TRACE(jh, "ph3: write metadata");
flags = journal_write_metadata_buffer(commit_transaction,
jh, &new_jh, blocknr);
- set_bit(BH_JWrite, &jh2bh(new_jh)->b_state);
+ set_buffer_jwrite(jh2bh(new_jh));
wbuf[bufs++] = jh2bh(new_jh);
/* Record the new block's tag in the current descriptor
@@ -713,7 +713,7 @@ wait_for_iobuf:
shadowed buffer */
jh = commit_transaction->t_shadow_list->b_tprev;
bh = jh2bh(jh);
- clear_bit(BH_JWrite, &bh->b_state);
+ clear_buffer_jwrite(bh);
J_ASSERT_BH(bh, buffer_jbddirty(bh));
/* The metadata is now released for reuse, but we need
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 2c4b1f1..da1b5e4 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -36,6 +36,7 @@
#include <linux/poison.h>
#include <linux/proc_fs.h>
#include <linux/debugfs.h>
+#include <linux/ratelimit.h>
#include <asm/uaccess.h>
#include <asm/page.h>
@@ -84,6 +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
@@ -439,7 +441,7 @@ int __log_start_commit(journal_t *journal, tid_t target)
*/
if (!tid_geq(journal->j_commit_request, target)) {
/*
- * We want a new commit: OK, mark the request and wakup the
+ * We want a new commit: OK, mark the request and wakeup the
* commit thread. We do _not_ do the commit ourselves.
*/
@@ -950,6 +952,8 @@ int journal_create(journal_t *journal)
if (err)
return err;
bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
+ if (unlikely(!bh))
+ return -ENOMEM;
lock_buffer(bh);
memset (bh->b_data, 0, journal->j_blocksize);
BUFFER_TRACE(bh, "marking dirty");
@@ -1010,6 +1014,23 @@ 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);
@@ -1021,9 +1042,17 @@ 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:
@@ -1719,7 +1748,6 @@ static void journal_destroy_journal_head_cache(void)
static struct journal_head *journal_alloc_journal_head(void)
{
struct journal_head *ret;
- static unsigned long last_warning;
#ifdef CONFIG_JBD_DEBUG
atomic_inc(&nr_journal_heads);
@@ -1727,11 +1755,9 @@ static struct journal_head *journal_alloc_journal_head(void)
ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
if (ret == NULL) {
jbd_debug(1, "out of memory for journal_head\n");
- if (time_after(jiffies, last_warning + 5*HZ)) {
- printk(KERN_NOTICE "ENOMEM in %s, retrying.\n",
- __func__);
- last_warning = jiffies;
- }
+ printk_ratelimited(KERN_NOTICE "ENOMEM in %s, retrying.\n",
+ __func__);
+
while (ret == NULL) {
yield();
ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS);
diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c
index 81051da..5b43e96 100644
--- a/fs/jbd/recovery.c
+++ b/fs/jbd/recovery.c
@@ -296,10 +296,10 @@ int journal_skip_recovery(journal_t *journal)
#ifdef CONFIG_JBD_DEBUG
int dropped = info.end_transaction -
be32_to_cpu(journal->j_superblock->s_sequence);
-#endif
jbd_debug(1,
"JBD: ignoring %d transaction%s from the journal.\n",
dropped, (dropped == 1) ? "" : "s");
+#endif
journal->j_transaction_sequence = ++info.end_transaction;
}
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index 5ae71e7..846a3f3 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -293,9 +293,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
jbd_free_handle(handle);
current->journal_info = NULL;
handle = ERR_PTR(err);
- goto out;
}
-out:
return handle;
}
@@ -528,7 +526,7 @@ do_get_write_access(handle_t *handle, struct journal_head *jh,
transaction = handle->h_transaction;
journal = transaction->t_journal;
- jbd_debug(5, "buffer_head %p, force_copy %d\n", jh, force_copy);
+ jbd_debug(5, "journal_head %p, force_copy %d\n", jh, force_copy);
JBUFFER_TRACE(jh, "entry");
repeat:
@@ -713,7 +711,7 @@ done:
J_EXPECT_JH(jh, buffer_uptodate(jh2bh(jh)),
"Possible IO failure.\n");
page = jh2bh(jh)->b_page;
- offset = ((unsigned long) jh2bh(jh)->b_data) & ~PAGE_MASK;
+ offset = offset_in_page(jh2bh(jh)->b_data);
source = kmap_atomic(page, KM_USER0);
memcpy(jh->b_frozen_data, source+offset, jh2bh(jh)->b_size);
kunmap_atomic(source, KM_USER0);
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