npiggin@suse.de 7bb46a6734 fs: introduce new truncate sequence ... Introduce a new truncate calling sequence into fs/mm subsystems. Rather than setattr > vmtruncate > truncate, have filesystems call their truncate sequence from ->setattr if filesystem specific operations are required. vmtruncate is deprecated, and truncate_pagecache and inode_newsize_ok helpers introduced previously should be used. simple_setattr is introduced for simple in-ram filesystems to implement the new truncate sequence. Eventually all filesystems should be converted to implement a setattr, and the default code in notify_change should go away. simple_setsize is also introduced to perform just the ATTR_SIZE portion of simple_setattr (ie. changing i_size and trimming pagecache). To implement the new truncate sequence: - filesystem specific manipulations (eg freeing blocks) must be done in the setattr method rather than ->truncate. - vmtruncate can not be used by core code to trim blocks past i_size in the event of write failure after allocation, so this must be performed in the fs code. - convert usage of helpers block_write_begin, nobh_write_begin, cont_write_begin, and *blockdev_direct_IO* to use _newtrunc postfixed variants. These avoid calling vmtruncate to trim blocks (see previous). - inode_setattr should not be used. generic_setattr is a new function to be used to copy simple attributes into the generic inode. - make use of the better opportunity to handle errors with the new sequence. Big problem with the previous calling sequence: the filesystem is not called until i_size has already changed. This means it is not allowed to fail the call, and also it does not know what the previous i_size was. Also, generic code calling vmtruncate to truncate allocated blocks in case of error had no good way to return a meaningful error (or, for example, atomically handle block deallocation). Cc: Christoph Hellwig <hch@lst.de> Acked-by: Jan Kara <jack@suse.cz> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		2010-05-27 22:15:33 -04:00
..
9p	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
adfs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
affs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
afs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
autofs	fs/: do not fallback to default_llseek() when readdir() uses BKL	2010-05-27 09:12:56 -07:00
autofs4	fs/autofs4: use memdup_user	2010-05-27 09:12:41 -07:00
befs	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
bfs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
btrfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
cachefiles	CacheFiles: Fix error handling in cachefiles_determine_cache_security()	2010-05-12 18:23:58 -07:00
ceph	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
cifs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
coda	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
configfs	Fix the regression created by "set S_DEAD on unlink()..." commit	2010-05-15 07:16:33 -04:00
cramfs
debugfs	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
devpts	Simplify devpts_get_sb() failure exits	2010-05-21 18:31:12 -04:00
dlm	dlm: fix ast ordering for user locks	2010-04-30 14:52:51 -05:00
ecryptfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
efs
exofs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
exportfs
ext2	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
ext3	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
ext4	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
fat	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
freevxfs	fs/: do not fallback to default_llseek() when readdir() uses BKL	2010-05-27 09:12:56 -07:00
fscache	fs/fscache/object-list.c: fix warning on 32-bit	2010-05-26 08:19:23 -07:00
fuse	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
gfs2	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
hfs	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
hfsplus	hfsplus: Push down BKL into ioctl function	2010-05-17 05:27:03 +02:00
hostfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
hpfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
hppfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
hugetlbfs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
isofs	fs/: do not fallback to default_llseek() when readdir() uses BKL	2010-05-27 09:12:56 -07:00
jbd	ext3: Fix waiting on transaction during fsync	2010-05-21 19:30:41 +02:00
jbd2	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4	2010-05-27 10:26:37 -07:00
jffs2	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
jfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
lockd	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
logfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
minix	fs/minix: bugfix, number of indirect block ptrs per block depends on block size	2010-05-27 22:06:22 -04:00
ncpfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
nfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
nfs_common	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
nfsd	kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, SHRT_MAX and SHRT_MIN	2010-05-25 08:07:02 -07:00
nilfs2	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
nls
notify	Saner locking around deactivate_super()	2010-05-21 18:31:14 -04:00
ntfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
ocfs2	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
omfs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
openpromfs
partitions	fs: ldm: don't use own implementation of hex_to_bin()	2010-05-25 08:07:06 -07:00
proc	kcore: add _text to KCORE_TEXT	2010-05-27 09:12:47 -07:00
qnx4	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
quota	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4	2010-05-27 10:26:37 -07:00
ramfs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
reiserfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
romfs	fix leak in romfs_fill_super()	2010-01-26 22:22:26 -05:00
smbfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
squashfs	squashfs: fix name reading in squashfs_xattr_get	2010-05-23 08:27:42 +01:00
sysfs	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
sysv	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
ubifs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
udf	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
ufs	rename the generic fsync implementations	2010-05-27 22:06:06 -04:00
xfs	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
aio.c	get rid of the magic around f_count in aio	2010-05-27 22:03:07 -04:00
anon_inodes.c	Revert "anon_inode: set S_IFREG on the anon_inode"	2010-05-27 22:03:05 -04:00
attr.c	fs: introduce new truncate sequence	2010-05-27 22:15:33 -04:00
bad_inode.c	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
binfmt_aout.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
binfmt_elf_fdpic.c	Remove redundant check for CONFIG_MMU	2010-04-27 09:01:26 -07:00
binfmt_elf.c	coredump: pass mm->flags as a coredump parameter for consistency	2010-03-06 11:26:46 -08:00
binfmt_em86.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
binfmt_flat.c	uclinux: error message when FLAT reloc symbol is invalid, v2	2010-04-21 13:28:49 +10:00
binfmt_misc.c
binfmt_script.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
binfmt_som.c	Split 'flush_old_exec' into two functions	2010-01-29 08:22:01 -08:00
bio-integrity.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
bio.c	Merge branch 'master' into for-linus	2010-03-19 08:05:10 +01:00
block_dev.c	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
buffer.c	fs: introduce new truncate sequence	2010-05-27 22:15:33 -04:00
char_dev.c
compat_binfmt_elf.c	elf coredump: replace ELF_CORE_EXTRA_* macros by functions	2010-03-06 11:26:45 -08:00
compat_ioctl.c	pktcdvd: improve BKL and compat_ioctl.c usage	2010-04-29 08:44:37 -07:00
compat.c	aio: fix the compat vectored operations	2010-05-27 09:12:53 -07:00
dcache.c	fix prune_dcache()/umount() race	2010-05-21 18:31:16 -04:00
dcookies.c
direct-io.c	fs: introduce new truncate sequence	2010-05-27 22:15:33 -04:00
drop_caches.c	new helper: iterate_supers()	2010-05-21 18:31:16 -04:00
eventfd.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
eventpoll.c	sched, wait: Use wrapper functions	2010-05-11 17:43:58 +02:00
exec.c	exit: avoid sig->count in de_thread/__exit_signal synchronization	2010-05-27 09:12:46 -07:00
fcntl.c	Merge branch 'master' into for-2.6.35	2010-05-21 21:27:26 +02:00
fifo.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
file_table.c	get rid of the magic around f_count in aio	2010-05-27 22:03:07 -04:00
file.c	fs: use rlimit helpers	2010-03-06 11:26:29 -08:00
filesystems.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
fs_struct.c
fs-writeback.c	fs-writeback: check sync bit earlier in inode_wait_for_writeback	2010-05-25 08:07:00 -07:00
generic_acl.c	fs: xattr_handler table should be const	2010-05-21 18:31:18 -04:00
inode.c	vfs: Add inode uid,gid,mode init helper	2010-05-21 18:31:22 -04:00
internal.h	Bury __put_super_and_need_restart()	2010-05-21 18:31:16 -04:00
ioctl.c	Introduce freeze_super and thaw_super for the fsfreeze ioctl	2010-05-21 18:31:18 -04:00
ioprio.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2010-03-19 09:43:06 -07:00
Kconfig.binfmt
libfs.c	fs: introduce new truncate sequence	2010-05-27 22:15:33 -04:00
locks.c	Merge branch 'for-next' into for-linus	2010-03-08 16:55:37 +01:00
Makefile	Take statfs variants to fs/statfs.c	2010-05-21 18:31:17 -04:00
mbcache.c
mpage.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
namei.c	VFS: fix recent breakage of FS_REVAL_DOT	2010-05-27 22:03:06 -04:00
namespace.c	Merge branch 'next' into for-linus	2010-05-18 08:57:00 +10:00
nfsctl.c	Switch may_open() and break_lease() to passing O_...	2010-03-03 13:00:21 -05:00
no-block.c
open.c	Take statfs variants to fs/statfs.c	2010-05-21 18:31:17 -04:00
pipe.c	fs: Add missing mutex_unlock	2010-05-27 22:03:09 -04:00
pnode.c	Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()	2010-03-03 13:00:22 -05:00
pnode.h	VFS: Clean up shared mount flag propagation	2010-03-03 14:07:55 -05:00
posix_acl.c
read_write.c	vfs: introduce noop_llseek()	2010-05-27 09:12:56 -07:00
read_write.h
readdir.c
select.c	Add generic sys_old_select()	2010-03-12 15:52:32 -08:00
seq_file.c	seq_file: fix new kernel-doc warnings	2010-03-07 15:48:26 -08:00
signalfd.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
splice.c	pipe: add support for shrinking and growing pipes	2010-05-21 21:12:40 +02:00
stack.c
stat.c
statfs.c	Take statfs variants to fs/statfs.c	2010-05-21 18:31:17 -04:00
super.c	fs/super: fix kernel-doc warning	2010-05-27 22:06:23 -04:00
sync.c	drop unused dentry argument to ->fsync	2010-05-27 22:05:02 -04:00
timerfd.c	fs/timerfd.c: make use of wait_event_interruptible_locked_irq()	2010-05-20 13:21:42 -07:00
utimes.c
xattr_acl.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
xattr.c	fs: xattr_handler table should be const	2010-05-21 18:31:18 -04:00