On Wed, 2008-05-28 at 15:24 +0530, Aneesh Kumar K.V wrote:
> On Wed, May 28, 2008 at 05:40:20PM +0800, Shen Feng wrote:
> > Add error processing for ext4_mb_load_buddy when it calls
> > ext4_mb_init_cache.
> >
> > Signed-off-by: Shen Feng <shen@xxxxxxxxxxxxxx>
>
> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
>
Thanks, I have added these two fixes to ext4 patch queue.
> > ---
> > fs/ext4/mballoc.c | 27 ++++++++++++++++++++-------
> > 1 files changed, 20 insertions(+), 7 deletions(-)
> >
> > diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
> > index 35c12db..a30a35d 100644
> > --- a/fs/ext4/mballoc.c
> > +++ b/fs/ext4/mballoc.c
> > @@ -883,6 +883,7 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
> > int pnum;
> > int poff;
> > struct page *page;
> > + int ret;
> >
> > mb_debug("load group %lu\n", group);
> >
> > @@ -914,15 +915,21 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
> > if (page) {
> > BUG_ON(page->mapping != inode->i_mapping);
> > if (!PageUptodate(page)) {
> > - ext4_mb_init_cache(page, NULL);
> > + ret = ext4_mb_init_cache(page, NULL);
> > + if (ret) {
> > + unlock_page(page);
> > + goto err;
> > + }
> > mb_cmp_bitmaps(e4b, page_address(page) +
> > (poff * sb->s_blocksize));
> > }
> > unlock_page(page);
> > }
> > }
> > - if (page == NULL || !PageUptodate(page))
> > + if (page == NULL || !PageUptodate(page)) {
> > + ret = -EIO;
> > goto err;
> > + }
> > e4b->bd_bitmap_page = page;
> > e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize);
> > mark_page_accessed(page);
> > @@ -938,14 +945,20 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
> > page = find_or_create_page(inode->i_mapping, pnum, GFP_NOFS);
> > if (page) {
> > BUG_ON(page->mapping != inode->i_mapping);
> > - if (!PageUptodate(page))
> > - ext4_mb_init_cache(page, e4b->bd_bitmap);
> > -
> > + if (!PageUptodate(page)) {
> > + ret = ext4_mb_init_cache(page, e4b->bd_bitmap);
> > + if (ret) {
> > + unlock_page(page);
> > + goto err;
> > + }
> > + }
> > unlock_page(page);
> > }
> > }
> > - if (page == NULL || !PageUptodate(page))
> > + if (page == NULL || !PageUptodate(page)) {
> > + ret = -EIO;
> > goto err;
> > + }
> > e4b->bd_buddy_page = page;
> > e4b->bd_buddy = page_address(page) + (poff * sb->s_blocksize);
> > mark_page_accessed(page);
> > @@ -962,7 +975,7 @@ err:
> > page_cache_release(e4b->bd_buddy_page);
> > e4b->bd_buddy = NULL;
> > e4b->bd_bitmap = NULL;
> > - return -EIO;
> > + return ret;
> > }
> >
> > static void ext4_mb_release_desc(struct ext4_buddy *e4b)
> > --
> > 1.5.4.5
> > --
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