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authorBadari Pulavarty <pbadari@us.ibm.com>2006-03-11 03:27:14 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-11 09:19:34 -0800
commitcd6ef84e6ac9454080707f2f338360f5d7e556fc (patch)
tree98770b47dd7ae2e1faad4796eb03b2d4760e1b03 /fs/ext3
parent0adb25d2e71ab047423d6fc63d5d184590d0a66f (diff)
downloadlwn-cd6ef84e6ac9454080707f2f338360f5d7e556fc.tar.gz
lwn-cd6ef84e6ac9454080707f2f338360f5d7e556fc.zip
[PATCH] ext3: fix nobh mode for chattr +j inodes
One can do "chattr +j" on a file to change its journalling mode. Fix writeback mode with "nobh" handling for it. Even though, we mount ext3 filesystem in writeback mode with "nobh" option, some one can do "chattr +j" on a single file to force it to do journalled mode. In order to do journaling, ext3_block_truncate_page() need to fallback to default case of creating buffers and adding them to transaction etc. Signed-off-by: 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.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 3fc4238e9703..0384e539b88f 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -1624,15 +1624,14 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
* 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)) {
- if (PageUptodate(page)) {
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, length);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
- set_page_dirty(page);
- goto unlock;
- }
+ if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
+ ext3_should_writeback_data(inode) && PageUptodate(page)) {
+ kaddr = kmap_atomic(page, KM_USER0);
+ memset(kaddr + offset, 0, length);
+ flush_dcache_page(page);
+ kunmap_atomic(kaddr, KM_USER0);
+ set_page_dirty(page);
+ goto unlock;
}
if (!page_has_buffers(page))