linux/fs/f2fs
Lukas Czerner d47992f86b mm: change invalidatepage prototype to accept length
Currently there is no way to truncate partial page where the end
truncate point is not at the end of the page. This is because it was not
needed and the functionality was enough for file system truncate
operation to work properly. However more file systems now support punch
hole feature and it can benefit from mm supporting truncating page just
up to the certain point.

Specifically, with this functionality truncate_inode_pages_range() can
be changed so it supports truncating partial page at the end of the
range (currently it will BUG_ON() if 'end' is not at the end of the
page).

This commit changes the invalidatepage() address space operation
prototype to accept range to be invalidated and update all the instances
for it.

We also change the block_invalidatepage() in the same way and actually
make a use of the new length argument implementing range invalidation.

Actual file system implementations will follow except the file systems
where the changes are really simple and should not change the behaviour
in any way .Implementation for truncate_page_range() which will be able
to accept page unaligned ranges will follow as well.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Hugh Dickins <hughd@google.com>
2013-05-21 23:17:23 -04:00
..
acl.c mode_t, whack-a-mole at 11... 2013-04-09 14:13:05 -04:00
acl.h f2fs: adjust kernel coding style 2012-12-11 13:43:42 +09:00
checkpoint.c f2fs: check truncation of mapping after lock_page 2013-04-29 11:19:32 +09:00
data.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
debug.c f2fs: remove useless #include <linux/proc_fs.h> as we're now using sysfs as debug entry. 2013-04-30 12:07:32 +09:00
dir.c f2fs updates for v3.10 2013-05-08 15:11:48 -07:00
f2fs.h f2fs: enhance alloc_nid and build_free_nids flows 2013-04-29 11:19:21 +09:00
file.c f2fs updates for v3.10 2013-05-08 15:11:48 -07:00
gc.c f2fs: remove useless #include <linux/proc_fs.h> as we're now using sysfs as debug entry. 2013-04-30 12:07:32 +09:00
gc.h f2fs: avoid frequent background GC 2013-04-26 10:35:03 +09:00
hash.c f2fs: unify string length declarations and usage 2012-12-28 11:27:53 +09:00
inode.c f2fs: add tracepoints for sync & inode operations 2013-04-23 15:30:27 +09:00
Kconfig f2fs: resolve build failures 2012-12-11 13:43:43 +09:00
Makefile f2fs: update Kconfig and Makefile 2012-12-11 13:43:42 +09:00
namei.c f2fs: avoid deadlock during evict after f2fs_gc 2013-05-08 19:54:08 +09:00
node.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
node.h f2fs: fix the logic of IS_DNODE() 2013-04-09 18:21:24 +09:00
recovery.c f2fs: recover when journal contains deleted files 2013-05-08 19:54:20 +09:00
segment.c f2fs: modify the number of issued pages to merge IOs 2013-04-30 12:07:32 +09:00
segment.h f2fs: modify the number of issued pages to merge IOs 2013-04-30 12:07:32 +09:00
super.c f2fs updates for v3.10 2013-05-08 15:11:48 -07:00
xattr.c f2fs: introduce a new global lock scheme 2013-04-09 18:21:18 +09:00
xattr.h f2fs: adjust kernel coding style 2012-12-11 13:43:42 +09:00