ext4: hole-punch use truncate_pagecache_range
authorHugh Dickins <hughd@google.com>
Fri, 1 Jun 2012 04:15:28 +0000 (00:15 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 1 Jun 2012 04:15:28 +0000 (00:15 -0400)
commit5e44f8c374dc4f8eadf61cd18b2c0d46bc87c1b7
treeccecc6ddd068b809de59b45abe7714ee47076d95
parentb2f4edb335f23626225a792e0669d1becf68312f
ext4: hole-punch use truncate_pagecache_range

When truncating a file, we unmap pages from userspace first, as that's
usually more efficient than relying, page by page, on the fallback in
truncate_inode_page() - particularly if the file is mapped many times.

Do the same when punching a hole: 3.4 added truncate_pagecache_range()
to do the unmap and trunc, so use it in ext4_ext_punch_hole(), instead
of calling truncate_inode_pages_range() directly.

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/ext4/extents.c