tree e184aed1d4c05e1df482dbf4b669723e31a841e1
parent 3cd90ea42f2c15f928b70ed66f6d8ed0a8e7aadd
author Josef Bacik <josef@redhat.com> 1296604367 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1296691400 -0800

fs: make block fiemap mapping length at least blocksize long

Some filesystems don't deal well with being asked to map less than
blocksize blocks (GFS2 for example).  Since we are always mapping at least
blocksize sections anyway, just make sure len is at least as big as a
blocksize so we don't trip up any filesystems.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>