Re: [PATCH V2] filefrag: count 0 extents properly when verbose

[Ted Ts'o <tytso@mit.edu>]

On Thu, May 05, 2011 at 01:21:08PM -0500, Eric Sandeen wrote:
> # rm -f a; touch a; filefrag a
> /boot/a: 0 extents found
> 
> works properly, but
> 
> # rm -f a; touch a; filefrag -v a
> Filesystem type is: ef53
> Filesystem cylinder groups is approximately 61
> File size of a is 0 (0 blocks, blocksize 1024)
>  ext logical physical expected length flags
> a: 1 extent found
> 
> yields 1 extent when it should be 0.
> 
> Fix this up by special-casing no extents returned in verbose
> mode; skip printing the header for the columns too, since there
> are no columns to print.
> 
> Also, in nonverbose mode we can set fm_extent_count to 0
> so that FIEMAP will just query the extent count without gathering
> details; clarify this with a comment.
> 
> Addresses-redhat-bugzilla: 653234
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>

Thanks, 

applied to the maint branch (which will then get pulled to
master/next) of e2fsprogs.

					- Ted