ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!

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Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b73fce69ecb091a178ef9286027c370a63eb25aa
Commit:     b73fce69ecb091a178ef9286027c370a63eb25aa
Parent:     55bd725aa3a83b3935988f37275b5a80e10d4169
Author:     Valerie Clement <[EMAIL PROTECTED]>
AuthorDate: Fri Feb 15 13:48:51 2008 -0500
Committer:  Theodore Ts'o <[EMAIL PROTECTED]>
CommitDate: Fri Feb 15 13:48:51 2008 -0500

    ext4: Fix kernel BUG at fs/ext4/mballoc.c:910!
    
    With the flex_bg feature enabled, a large file creation oopses the
    kernel.   The BUG_ON is:
        BUG_ON(len >= EXT4_BLOCKS_PER_GROUP(sb));
    
    As the allocation of the bitmaps and the inode table can be done
    outside the block group with flex_bg, this allows to allocate up to
    EXT4_BLOCKS_PER_GROUP blocks in a group.
    
    This patch fixes the oops.
    
    Signed-off-by: Valerie Clement <[EMAIL PROTECTED]>
    Signed-off-by: Mingming Cao <[EMAIL PROTECTED]>
    Signed-off-by: "Theodore Ts'o" <[EMAIL PROTECTED]>
---
 fs/ext4/mballoc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index dd0fcfc..2121184 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -906,7 +906,7 @@ static void ext4_mb_mark_free_simple(struct super_block *sb,
        unsigned short chunk;
        unsigned short border;
 
-       BUG_ON(len >= EXT4_BLOCKS_PER_GROUP(sb));
+       BUG_ON(len > EXT4_BLOCKS_PER_GROUP(sb));
 
        border = 2 << sb->s_blocksize_bits;
 
-
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