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authorAndrew Morton <akpm@osdl.org>2005-05-05 16:16:02 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-05-05 16:36:44 -0700
commitd17d7fa44dbe1f12031773e27eda9e939024a037 (patch)
tree4b2a8ebb60907a5cde4dd02b737851525a24a588 /fs/ext3
parentecffdde68ebefa1aa24411a91b12ae649f71f71c (diff)
downloadop-kernel-dev-d17d7fa44dbe1f12031773e27eda9e939024a037.zip
op-kernel-dev-d17d7fa44dbe1f12031773e27eda9e939024a037.tar.gz
[PATCH] revert ext3-writepages-support-for-writeback-mode
This had a fatal lock ranking bug: we do journal_start outside mpage_writepages()'s lock_page(). Revert the whole thing, think again. Credit-to: Jan Kara <jack@suse.cz> For identifying the bug. Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext3')
-rw-r--r--fs/ext3/inode.c46
1 files changed, 0 insertions, 46 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index ea58886..0d5fa73 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -844,12 +844,6 @@ get_block:
return ret;
}
-static int ext3_writepages_get_block(struct inode *inode, sector_t iblock,
- struct buffer_head *bh, int create)
-{
- return ext3_direct_io_get_blocks(inode, iblock, 1, bh, create);
-}
-
/*
* `handle' can be NULL if create is zero
*/
@@ -1323,45 +1317,6 @@ out_fail:
return ret;
}
-static int
-ext3_writeback_writepage_helper(struct page *page,
- struct writeback_control *wbc)
-{
- return block_write_full_page(page, ext3_get_block, wbc);
-}
-
-static int
-ext3_writeback_writepages(struct address_space *mapping,
- struct writeback_control *wbc)
-{
- struct inode *inode = mapping->host;
- handle_t *handle = NULL;
- int err, ret = 0;
-
- if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
- return ret;
-
- handle = ext3_journal_start(inode, ext3_writepage_trans_blocks(inode));
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- return ret;
- }
-
- ret = __mpage_writepages(mapping, wbc, ext3_writepages_get_block,
- ext3_writeback_writepage_helper);
-
- /*
- * Need to reaquire the handle since ext3_writepages_get_block()
- * can restart the handle
- */
- handle = journal_current_handle();
-
- err = ext3_journal_stop(handle);
- if (!ret)
- ret = err;
- return ret;
-}
-
static int ext3_writeback_writepage(struct page *page,
struct writeback_control *wbc)
{
@@ -1599,7 +1554,6 @@ static struct address_space_operations ext3_writeback_aops = {
.readpage = ext3_readpage,
.readpages = ext3_readpages,
.writepage = ext3_writeback_writepage,
- .writepages = ext3_writeback_writepages,
.sync_page = block_sync_page,
.prepare_write = ext3_prepare_write,
.commit_write = ext3_writeback_commit_write,
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