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authorChristoph Hellwig <hch@lst.de>2010-06-07 12:20:39 +0400
committerJan Kara <jack@suse.cz>2010-07-21 18:01:47 +0400
commit4c4d3901225518ed1a4c938ba15ba09842a00770 (patch)
tree0ed9eb0ad123174ebdd6ea507ac06b388d0d0b20 /fs/ext3
parent0411ba7902e09111d6f2041b4697a597d2cf7736 (diff)
downloadlinux-4c4d3901225518ed1a4c938ba15ba09842a00770.tar.xz
ext3: remove vestiges of nobh support
The nobh option was only supported for writeback mode, but given that all write paths (except mmapped writed) actually create buffer heads, it effectively was a no-op already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/inode.c16
-rw-r--r--fs/ext3/super.c17
2 files changed, 5 insertions, 28 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 735f0190ec2a..a786db403efc 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1625,10 +1625,7 @@ 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 +1919,6 @@ 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);
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 6c953bb255e7..9650a956fd0e 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.