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-rw-r--r--fs/ext3/Kconfig1
-rw-r--r--fs/ext3/inode.c80
-rw-r--r--fs/ext3/namei.c3
-rw-r--r--fs/ext3/resize.c2
-rw-r--r--fs/ext3/super.c17
5 files changed, 49 insertions, 54 deletions
diff --git a/fs/ext3/Kconfig b/fs/ext3/Kconfig
index 522b15498f4..e8c6ba0e4a3 100644
--- a/fs/ext3/Kconfig
+++ b/fs/ext3/Kconfig
@@ -31,6 +31,7 @@ config EXT3_FS
config EXT3_DEFAULTS_TO_ORDERED
bool "Default to 'data=ordered' in ext3"
depends on EXT3_FS
+ default y
help
The journal mode options for ext3 have different tradeoffs
between when data is guaranteed to be on disk and
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 735f0190ec2..001eb0e2d48 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1149,9 +1149,25 @@ static int walk_page_buffers( handle_t *handle,
static int do_journal_get_write_access(handle_t *handle,
struct buffer_head *bh)
{
+ int dirty = buffer_dirty(bh);
+ int ret;
+
if (!buffer_mapped(bh) || buffer_freed(bh))
return 0;
- return ext3_journal_get_write_access(handle, bh);
+ /*
+ * __block_prepare_write() could have dirtied some buffers. Clean
+ * the dirty bit as jbd2_journal_get_write_access() could complain
+ * otherwise about fs integrity issues. Setting of the dirty bit
+ * by __block_prepare_write() isn't a real problem here as we clear
+ * the bit before releasing a page lock and thus writeback cannot
+ * ever write the buffer.
+ */
+ if (dirty)
+ clear_buffer_dirty(bh);
+ ret = ext3_journal_get_write_access(handle, bh);
+ if (!ret && dirty)
+ ret = ext3_journal_dirty_metadata(handle, bh);
+ return ret;
}
/*
@@ -1625,10 +1641,7 @@ static int ext3_writeback_writepage(struct page *page,
goto out_fail;
}
- if (test_opt(inode->i_sb, NOBH) && ext3_should_writeback_data(inode))
- ret = nobh_writepage(page, ext3_get_block, wbc);
- else
- ret = block_write_full_page(page, ext3_get_block, wbc);
+ ret = block_write_full_page(page, ext3_get_block, wbc);
err = ext3_journal_stop(handle);
if (!ret)
@@ -1922,17 +1935,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
length = blocksize - (offset & (blocksize - 1));
iblock = index << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits);
- /*
- * For "nobh" option, we can only work if we don't need to
- * read-in the page - otherwise we create buffers to do the IO.
- */
- if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
- ext3_should_writeback_data(inode) && PageUptodate(page)) {
- zero_user(page, offset, length);
- set_page_dirty(page);
- goto unlock;
- }
-
if (!page_has_buffers(page))
create_empty_buffers(page, blocksize, 0);
@@ -2284,27 +2286,6 @@ static void ext3_free_branches(handle_t *handle, struct inode *inode,
depth);
/*
- * We've probably journalled the indirect block several
- * times during the truncate. But it's no longer
- * needed and we now drop it from the transaction via
- * journal_revoke().
- *
- * That's easy if it's exclusively part of this
- * transaction. But if it's part of the committing
- * transaction then journal_forget() will simply
- * brelse() it. That means that if the underlying
- * block is reallocated in ext3_get_block(),
- * unmap_underlying_metadata() will find this block
- * and will try to get rid of it. damn, damn.
- *
- * If this block has already been committed to the
- * journal, a revoke record will be written. And
- * revoke records must be emitted *before* clearing
- * this block's bit in the bitmaps.
- */
- ext3_forget(handle, 1, inode, bh, bh->b_blocknr);
-
- /*
* Everything below this this pointer has been
* released. Now let this top-of-subtree go.
*
@@ -2327,6 +2308,31 @@ static void ext3_free_branches(handle_t *handle, struct inode *inode,
truncate_restart_transaction(handle, inode);
}
+ /*
+ * We've probably journalled the indirect block several
+ * times during the truncate. But it's no longer
+ * needed and we now drop it from the transaction via
+ * journal_revoke().
+ *
+ * That's easy if it's exclusively part of this
+ * transaction. But if it's part of the committing
+ * transaction then journal_forget() will simply
+ * brelse() it. That means that if the underlying
+ * block is reallocated in ext3_get_block(),
+ * unmap_underlying_metadata() will find this block
+ * and will try to get rid of it. damn, damn. Thus
+ * we don't allow a block to be reallocated until
+ * a transaction freeing it has fully committed.
+ *
+ * We also have to make sure journal replay after a
+ * crash does not overwrite non-journaled data blocks
+ * with old metadata when the block got reallocated for
+ * data. Thus we have to store a revoke record for a
+ * block in the same transaction in which we free the
+ * block.
+ */
+ ext3_forget(handle, 1, inode, bh, bh->b_blocknr);
+
ext3_free_blocks(handle, inode, nr, 1);
if (parent_bh) {
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index ee184084ca4..2b35ddb70d6 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -1447,7 +1447,6 @@ static int ext3_add_entry (handle_t *handle, struct dentry *dentry,
struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
- unsigned long offset;
struct buffer_head * bh;
struct ext3_dir_entry_2 *de;
struct super_block * sb;
@@ -1469,7 +1468,7 @@ static int ext3_add_entry (handle_t *handle, struct dentry *dentry,
ext3_mark_inode_dirty(handle, dir);
}
blocks = dir->i_size >> sb->s_blocksize_bits;
- for (block = 0, offset = 0; block < blocks; block++) {
+ for (block = 0; block < blocks; block++) {
bh = ext3_bread(handle, dir, block, 0, &retval);
if(!bh)
return retval;
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 54351ac7cef..0ccd7b12b73 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -964,7 +964,6 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
ext3_fsblk_t n_blocks_count)
{
ext3_fsblk_t o_blocks_count;
- unsigned long o_groups_count;
ext3_grpblk_t last;
ext3_grpblk_t add;
struct buffer_head * bh;
@@ -976,7 +975,6 @@ int ext3_group_extend(struct super_block *sb, struct ext3_super_block *es,
* yet: we're going to revalidate es->s_blocks_count after
* taking the s_resize_lock below. */
o_blocks_count = le32_to_cpu(es->s_blocks_count);
- o_groups_count = EXT3_SB(sb)->s_groups_count;
if (test_opt(sb, DEBUG))
printk(KERN_DEBUG "EXT3-fs: extending last group from "E3FSBLK" uto "E3FSBLK" blocks\n",
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 6c953bb255e..9650a956fd0 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -661,9 +661,6 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
*/
seq_puts(seq, ",barrier=");
seq_puts(seq, test_opt(sb, BARRIER) ? "1" : "0");
- if (test_opt(sb, NOBH))
- seq_puts(seq, ",nobh");
-
seq_printf(seq, ",data=%s", data_mode_string(test_opt(sb, DATA_FLAGS)));
if (test_opt(sb, DATA_ERR_ABORT))
seq_puts(seq, ",data_err=abort");
@@ -1255,10 +1252,12 @@ set_qf_format:
*n_blocks_count = option;
break;
case Opt_nobh:
- set_opt(sbi->s_mount_opt, NOBH);
+ ext3_msg(sb, KERN_WARNING,
+ "warning: ignoring deprecated nobh option");
break;
case Opt_bh:
- clear_opt(sbi->s_mount_opt, NOBH);
+ ext3_msg(sb, KERN_WARNING,
+ "warning: ignoring deprecated bh option");
break;
default:
ext3_msg(sb, KERN_ERR,
@@ -2001,14 +2000,6 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
break;
}
- if (test_opt(sb, NOBH)) {
- if (!(test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)) {
- ext3_msg(sb, KERN_WARNING,
- "warning: ignoring nobh option - "
- "it is supported only with writeback mode");
- clear_opt(sbi->s_mount_opt, NOBH);
- }
- }
/*
* The journal_load will have done any necessary log recovery,
* so we can safely mount the rest of the filesystem now.