On Tue, 2009-10-27 at 15:45 +0530, Aneesh Kumar K.V wrote: > Can you try this patch ? > > commit a8836b1d6f92273e001012c7705ae8f4c3d5fb65 > Author: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> > Date: Tue Oct 27 15:36:38 2009 +0530 > > ext4: discard preallocation during truncate > > We need to make sure when we drop and reacquire the inode's > i_data_sem we discard the inode preallocation. Otherwise we > could have blocks marked as free in bitmap but still belonging > to prealloc space. > > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> > Make sense, reviewed-by: Mingming Cao <cmm@xxxxxxxxxx> > diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c > index 5c5bc5d..a1ef1c3 100644 > --- a/fs/ext4/inode.c > +++ b/fs/ext4/inode.c > @@ -209,6 +209,12 @@ static int try_to_extend_transaction(handle_t *handle, struct inode *inode) > up_write(&EXT4_I(inode)->i_data_sem); > ret = ext4_journal_restart(handle, blocks_for_truncate(inode)); > down_write(&EXT4_I(inode)->i_data_sem); > + /* > + * We have dropped i_data_sem. So somebody else could have done > + * block allocation. So discard the prealloc space created as a > + * part of block allocation > + */ > + ext4_discard_preallocations(inode); > > return ret; > } > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
