redonkable/alistair23-linux
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Joseph Qi 026749a86e ocfs2: prepare some interfaces used in append direct io 
Currently in case of append O_DIRECT write (block not allocated yet),
ocfs2 will fall back to buffered I/O.  This has some disadvantages.
Firstly, it is not the behavior as expected.  Secondly, it will consume
huge page cache, e.g.  in mass backup scenario.  Thirdly, modern
filesystems such as ext4 support this feature.

In this patch set, the direct I/O write doesn't fallback to buffer I/O
write any more because the allocate blocks are enabled in direct I/O now.

This patch (of 9):

Prepare some interfaces which will be used in append O_DIRECT write.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Weiwei Wang <wangww631@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Xuejiufei <xuejiufei@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: alex chen <alex.chen@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-16 17:56:04 -08:00
..
9p Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
adfs
affs fs/affs/file.c: remove obsolete pagesize check 2014-12-13 12:42:52 -08:00
afs Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
autofs4 assorted conversions to %p[dD] 2014-11-19 13:01:20 -05:00
befs befs: remove dead code 2014-12-13 12:42:51 -08:00
bfs
btrfs Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
cachefiles assorted conversions to %p[dD] 2014-11-19 13:01:20 -05:00
ceph Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
cifs Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
coda fs: introduce f_op->mmap_capabilities for nommu mmap support 2015-01-20 14:02:58 -07:00
configfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
cramfs
debugfs Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
devpts
dlm netlink: make nlmsg_end() and genlmsg_end() void 2015-01-18 01:03:45 -05:00
ecryptfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
efivarfs * Move efivarfs from the misc filesystem section to pseudo filesystem, 2015-01-29 19:16:40 +01:00
efs
exofs vfs: remove get_xip_mem 2015-02-16 17:56:03 -08:00
exportfs
ext2 ext2: get rid of most mentions of XIP in ext2 2015-02-16 17:56:04 -08:00
ext3 ext3: destroy sbi mutexes in put_super 2015-01-05 11:13:55 +01:00
ext4 ext4: add DAX functionality 2015-02-16 17:56:04 -08:00
f2fs Merge tag 'for-f2fs-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs 2015-02-12 19:28:50 -08:00
fat fat: fix data past EOF resulting from fsx testsuite 2014-12-13 12:42:51 -08:00
freevxfs
fscache
fuse Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
gfs2 Merge branch 'akpm' (patches from Andrew) 2015-02-12 18:54:28 -08:00
hfs fs/hfs/catalog.c: fix comparison bug in hfs_cat_keycmp 2014-12-10 17:41:16 -08:00
hfsplus hfsplus: fix longname handling 2014-12-18 19:08:10 -08:00
hostfs
hpfs
hppfs
hugetlbfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
isofs isofs: Fix bug in the way to check if the year is a leap year 2015-01-07 09:51:49 +01:00
jbd jbd: Deletion of an unnecessary check before the function call "iput" 2014-11-18 10:15:29 +01:00
jbd2 Lots of bugs fixes, including Zheng and Jan's extent status shrinker 2014-12-12 09:28:03 -08:00
jffs2 jffs2: Drop bogus if in comment 2014-11-28 18:23:44 -08:00
jfs jfs: Deletion of an unnecessary check before the function call "unload_nls" 2015-02-02 15:02:34 -06:00
kernfs kernfs: remove KERNFS_STATIC_NAME 2015-02-13 21:21:36 -08:00
lockd Merge branch 'for-3.20' of git://linux-nfs.org/~bfields/linux 2015-02-12 10:39:41 -08:00
logfs
minix
ncpfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
nfs Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
nfs_common
nfsd nfsd: default NFSv4.2 to on 2015-02-09 14:58:50 -05:00
nilfs2 Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
nls
notify fanotify: don't set FAN_ONDIR implicitly on a marks ignored mask 2015-02-10 14:30:28 -08:00
ntfs fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info 2015-01-20 14:03:04 -07:00
ocfs2 ocfs2: prepare some interfaces used in append direct io 2015-02-16 17:56:04 -08:00
omfs
openpromfs
overlayfs Merge branch 'iov_iter' into for-next 2014-12-08 20:39:29 -05:00
proc proc: use %*pb[l] to print bitmaps including cpumasks and nodemasks 2015-02-13 21:21:38 -08:00
pstore pstore: Fix sprintf format specifier in pstore_dump() 2015-01-16 16:01:29 -08:00
qnx4
qnx6
quota Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2015-02-10 15:52:38 -08:00
ramfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
reiserfs Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs 2014-12-16 15:46:01 -08:00
romfs fs: remove mapping->backing_dev_info 2015-01-20 14:03:05 -07:00
squashfs Squashfs: Add LZ4 compression configuration option 2014-11-27 18:48:44 +00:00
sysfs driver core patches for 3.20-rc1 2015-02-15 11:11:47 -08:00
sysv
ubifs Merge branch 'for-linus-v3.20' of git://git.infradead.org/linux-ubifs 2015-02-15 10:11:39 -08:00
udf udf: remove bool assignment to 0/1 2015-02-05 16:34:25 +01:00
ufs
xfs Merge branch 'akpm' (patches from Andrew) 2015-02-12 18:54:28 -08:00
aio.c Merge branch 'for-3.20/bdi' of git://git.kernel.dk/linux-block 2015-02-12 13:50:21 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c assorted conversions to %p[dD] 2014-11-19 13:01:20 -05:00
binfmt_elf.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
binfmt_elf_fdpic.c
binfmt_em86.c syscalls: implement execveat() system call 2014-12-13 12:42:51 -08:00
binfmt_flat.c
binfmt_misc.c unfuck binfmt_misc.c (broken by commit e6084d4) 2014-12-17 08:27:14 -05:00
binfmt_script.c syscalls: implement execveat() system call 2014-12-13 12:42:51 -08:00
binfmt_som.c
block_dev.c Merge branch 'for-3.20/core' of git://git.kernel.dk/linux-block 2015-02-12 14:13:23 -08:00
buffer.c
char_dev.c fs: introduce f_op->mmap_capabilities for nommu mmap support 2015-01-20 14:02:58 -07:00
compat.c
compat_binfmt_elf.c
compat_ioctl.c
coredump.c
dax.c dax: add dax_zero_page_range 2015-02-16 17:56:04 -08:00
dcache.c fs: dcache: manually unpoison dname after allocation to shut up kasan's reports 2015-02-13 21:21:41 -08:00
dcookies.c
direct-io.c
drop_caches.c vmscan: per memory cgroup slab shrinkers 2015-02-12 18:54:09 -08:00
eventfd.c
eventpoll.c epoll: optimize setting task running after blocking 2015-02-13 21:21:40 -08:00
exec.c syscalls: implement execveat() system call 2014-12-13 12:42:51 -08:00
fcntl.c vfs: renumber FMODE_NONOTIFY and add to uniqueness check 2015-01-08 15:10:52 -08:00
fhandle.c
file.c fs/file.c: replace get_unused_fd() with get_unused_fd_flags(0) 2014-12-10 17:41:10 -08:00
file_table.c
filesystems.c
fs-writeback.c fs: make inode_to_bdi() handle NULL inode 2015-01-22 08:13:17 -07:00
fs_pin.c
fs_struct.c
inode.c Merge branch 'akpm' (patches from Andrew) 2015-02-12 18:54:28 -08:00
internal.h list_lru: introduce list_lru_shrink_{count,walk} 2015-02-12 18:54:08 -08:00
ioctl.c fsioctl.c: make generic_block_fiemap() signal-tolerant 2015-02-10 14:30:30 -08:00
Kconfig dax: does not work correctly with virtual aliasing caches 2015-02-16 17:56:04 -08:00
Kconfig.binfmt binfmt_elf: allow arch code to examine PT_LOPROC ... PT_HIPROC headers 2014-11-24 07:45:02 +01:00
libfs.c
locks.c fs: add FL_LAYOUT lease type 2015-02-02 18:09:38 +01:00
Makefile vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX 2015-02-16 17:56:04 -08:00
mbcache.c
mount.h common object embedded into various struct ....ns 2014-12-04 14:31:00 -05:00
mpage.c
namei.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-12-16 15:53:03 -08:00
namespace.c fs/namespace: convert devname allocation to kstrdup_const 2015-02-13 21:21:36 -08:00
no-block.c
nsfs.c take the targets of /proc/*/ns/* symlinks to separate fs 2014-12-10 21:30:20 -05:00
open.c vfs: remove get_xip_mem 2015-02-16 17:56:03 -08:00
pipe.c
pnode.c mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers. 2014-12-02 10:46:50 -06:00
pnode.h
posix_acl.c
proc_namespace.c vfs: make mounts and mountstats honor root dir like mountinfo does 2014-12-17 08:27:15 -05:00
read_write.c locks: convert posix locks to file_lock_context 2015-01-16 16:08:16 -05:00
readdir.c
select.c all arches, signal: move restart_block to struct task_struct 2015-02-12 18:54:12 -08:00
seq_file.c bitmap, cpumask, nodemask: remove dedicated formatting functions 2015-02-13 21:21:39 -08:00
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c Merge branch 'akpm' (patches from Andrew) 2015-02-12 18:54:28 -08:00
sync.c kill f_dentry uses 2014-11-19 13:01:25 -05:00
timerfd.c
utimes.c
xattr.c new helper: audit_file() 2014-11-19 13:01:26 -05:00