Re: [RFC] [PATCH] Reducing average ext2 fsck time through fs-wide dirty bit]

[Valerie Henson]

On Tue, Mar 21, 2006 at 05:10:36PM -0800, Valerie Henson wrote:
> 
> The combination of the orphan inode and preallocation blocks problem
> led me to another idea: create in-memory-only allocation bitmaps for
> both inodes and blocks.  These bitmaps would track blocks and inodes
> allocated only for the life of this mount (or a file open) in memory
> rather than on disk.  I haven't implemented this yet but I think it is
> a promising approach.

As I discovered about 5 seconds after starting to implement this, this
is a terrible idea.  Hint: think about worst-case memory usage.  I am
working on porting the ext3 reservation code to ext2 instead.

-VAL
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/