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OpenCloudOS-Kernel/fs/btrfs
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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
..
Kconfig btrfs: move leak debug code to functions 2013-05-06 15:55:16 -04:00
Makefile Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
acl.c Btrfs: skip adding an acl attribute if we don't have to 2012-12-16 20:46:15 -05:00
async-thread.c Btrfs: call the ordered free operation without any locks held 2012-07-25 16:15:07 -04:00
async-thread.h btrfs: return void in functions without error conditions 2012-03-22 01:45:34 +01:00
backref.c Btrfs: fix possible memory leak in the find_parent_nodes() 2013-05-17 21:40:17 -04:00
backref.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
btrfs_inode.h btrfs: fix minor typo in comment 2013-05-06 15:54:49 -04:00
check-integrity.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
check-integrity.h Btrfs: add optional integrity check code 2011-12-21 19:14:09 +01:00
compat.h
…
compression.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
compression.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ctree.c Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
ctree.h Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
delayed-inode.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
delayed-inode.h Btrfs: improve the delayed inode throttling 2013-03-07 07:52:40 -05:00
delayed-ref.c Btrfs: separate sequence numbers for delayed ref tracking and tree mod log 2013-05-06 15:55:17 -04:00
delayed-ref.h Btrfs: handle running extent ops with skinny metadata 2013-05-17 21:40:15 -04:00
dev-replace.c Btrfs: don't allow device replace on RAID5/RAID6 2013-05-17 21:40:16 -04:00
dev-replace.h Btrfs: add new sources for device replace code 2012-12-12 17:15:41 -05:00
dir-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
disk-io.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
disk-io.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
export.h
…
extent-tree.c Btrfs: explicitly use global_block_rsv for quota_tree 2013-05-17 21:40:36 -04:00
extent_io.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
extent_io.h Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
extent_map.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
extent_map.h Btrfs: fix bad extent logging 2013-05-06 15:54:34 -04:00
file-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2013-05-09 13:07:40 -07:00
free-space-cache.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
free-space-cache.h Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
hash.h btrfs: extended inode refs 2012-10-09 09:14:45 -04:00
inode-item.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
inode-map.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
inode-map.h Btrfs: Support reading/writing on disk free ino cache 2011-04-25 16:46:11 +08:00
inode.c mm: change invalidatepage prototype to accept length 2013-05-21 23:17:23 -04:00
ioctl.c btrfs: don't stop searching after encountering the wrong item 2013-05-17 21:40:10 -04:00
locking.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
locking.h Btrfs: remove btrfs_try_spin_lock 2013-03-14 14:57:10 -04:00
lzo.c btrfs: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:21 +08:00
math.h Btrfs: cleanup duplicated division functions 2012-12-11 13:31:30 -05:00
ordered-data.c Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
ordered-data.h Btrfs: improve the performance of the csums lookup 2013-05-06 15:54:35 -04:00
orphan.c btrfs: replace many BUG_ONs with proper error handling 2012-03-22 11:52:54 +01:00
print-tree.c Btrfs: Include the device in most error printk()s 2013-05-06 15:54:23 -04:00
print-tree.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
qgroup.c Btrfs: automatic rescan after "quota enable" command 2013-05-06 15:55:20 -04:00
raid56.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
raid56.h Btrfs: RAID5 and RAID6 2013-02-01 14:24:23 -05:00
rcu-string.h Btrfs: use rcu to protect device->name 2012-06-14 21:29:16 -04:00
reada.c Btrfs: fix reada debug code compilation 2013-05-06 15:54:55 -04:00
relocation.c Btrfs: don't use global block reservation for inode cache truncation 2013-05-17 21:40:22 -04:00
root-tree.c Btrfs: delete unused parameter to btrfs_read_root_item() 2013-05-06 15:55:14 -04:00
scrub.c Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
send.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
send.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
struct-funcs.c Btrfs: rewrite BTRFS_SETGET_FUNCS 2012-07-23 16:28:06 -04:00
super.c Btrfs: pause the space balance when remounting to R/O 2013-05-17 21:40:31 -04:00
sysfs.c btrfs: fixup/remove module.h usage as required 2013-03-01 15:01:01 -05:00
transaction.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
transaction.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
tree-defrag.c btrfs: remove cache only arguments from defrag path 2013-02-20 12:59:36 -05:00
tree-log.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
tree-log.h btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
ulist.c Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
ulist.h Btrfs: add a rb_tree to improve performance of ulist search 2013-05-06 15:54:44 -04:00
version.h
…
volumes.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2013-05-18 11:35:28 -07:00
volumes.h Btrfs: use a btrfs bioset instead of abusing bio internals 2013-05-17 21:52:52 -04:00
xattr.c btrfs: make static code static & remove dead code 2013-05-06 15:55:23 -04:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00
zlib.c btrfs: fix message printing 2012-10-09 09:19:57 -04:00