linux/fs/logfs
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
..
compr.c zlib: slim down zlib_deflate() workspace when possible 2011-03-22 17:44:17 -07:00
dev_bdev.c block: Remove bi_idx references 2013-03-23 14:15:31 -07:00
dev_mtd.c mtd: fix merge conflict resolution breakage 2012-02-01 11:10:24 -08:00
dir.c new helper: file_inode(file) 2013-02-22 23:31:31 -05:00
file.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
gc.c logfs: Prevent memory corruption 2012-01-28 11:24:21 +05:30
inode.c Fix misspellings of "whether" in comments. 2012-11-19 14:31:35 +01:00
journal.c logfs: create a pagecache page if it is not present 2012-07-23 09:18:14 +05:30
Kconfig fs/logfs: remove depends on CONFIG_EXPERIMENTAL 2013-01-21 14:39:05 -08:00
logfs_abi.h fix "seperate" typos in comments 2010-05-10 11:56:30 +02:00
logfs.h Pull request from git://github.com/prasad-joshi/logfs_upstream.git 2012-01-31 09:23:59 -08:00
Makefile
readwrite.c logfs: drop vmtruncate 2012-12-20 18:40:53 -05:00
segment.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
super.c fs: Limit sys_mount to only request filesystem modules. 2013-03-03 19:36:31 -08:00