tree dc6e0afdf59808238dd44c685d897da98852fca5
parent 85821aab39b3403a8b5731812a930b78684d1642
author Hugh Dickins <hughd@google.com> 1311639144 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1311652630 -0700

mm: tidy vmtruncate_range and related functions

Use consistent variable names in truncate_pagecache(), truncate_setsize(),
vmtruncate() and vmtruncate_range().

unmap_mapping_range() and vmtruncate_range() have mismatched interfaces:
don't change either, but make the vmtruncates more precise about what they
expect unmap_mapping_range() to do.

vmtruncate_range() is currently called only with page-aligned start and
end+1: can handle unaligned start, but unaligned end+1 would hit BUG_ON in
truncate_inode_pages_range() (lacks partial clearing of the end page).

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>