Nick Piggin 54cb8821de mm: merge populate and nopage into fault (fixes nonlinear) ... Nonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes the virtual address -> file offset differently from linear mappings. ->populate is a layering violation because the filesystem/pagecache code should need to know anything about the virtual memory mapping. The hitch here is that the ->nopage handler didn't pass down enough information (ie. pgoff). But it is more logical to pass pgoff rather than have the ->nopage function calculate it itself anyway (because that's a similar layering violation). Having the populate handler install the pte itself is likewise a nasty thing to be doing. This patch introduces a new fault handler that replaces ->nopage and ->populate and (later) ->nopfn. Most of the old mechanism is still in place so there is a lot of duplication and nice cleanups that can be removed if everyone switches over. The rationale for doing this in the first place is that nonlinear mappings are subject to the pagefault vs invalidate/truncate race too, and it seemed stupid to duplicate the synchronisation logic rather than just consolidate the two. After this patch, MAP_NONBLOCK no longer sets up ptes for pages present in pagecache. Seems like a fringe functionality anyway. NOPAGE_REFAULT is removed. This should be implemented with ->fault, and no users have hit mainline yet. [akpm@linux-foundation.org: cleanup] [randy.dunlap@oracle.com: doc. fixes for readahead] [akpm@linux-foundation.org: build fix] Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-07-19 10:04:41 -07:00
..
9p	9p: fix debug compilation error	2007-07-16 16:03:25 -05:00
adfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
affs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
afs	AFS: drop explicit extern	2007-07-16 09:05:43 -07:00
autofs	Replace pid_t in autofs with struct pid reference	2007-05-11 08:29:36 -07:00
autofs4	Fix some coding-style errors in autofs	2007-05-11 08:29:36 -07:00
befs	Remove SLAB_CTOR_CONSTRUCTOR	2007-05-17 05:23:04 -07:00
bfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
cifs	Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6	2007-07-19 00:38:57 +00:00
coda	wrong order of arguments of ->readdir()	2007-07-15 16:40:51 -07:00
configfs	configfs: config item dependancies.	2007-07-10 17:18:59 -07:00
cramfs	mm: make read_cache_page synchronous	2007-05-07 12:12:51 -07:00
debugfs	debugfs: remove rmdir() non-empty complaint	2007-07-18 15:49:48 -07:00
devpts	devpts: add fsnotify create event	2007-05-08 11:14:59 -07:00
dlm	configfs: Convert subsystem semaphore to mutex	2007-07-10 17:10:56 -07:00
ecryptfs	Couple fixes to fs/ecryptfs/inode.c	2007-07-17 10:23:08 -07:00
efs	knfsd: exportfs: remove iget abuse	2007-07-17 10:23:06 -07:00
exportfs	knfsd: exportfs: split out reconnecting a dentry from find_exported_dentry	2007-07-17 10:23:06 -07:00
ext2	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
ext3	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
ext4	ext4: extent macros cleanup	2007-07-18 09:09:15 -04:00
fat	knfsd: exportfs: add exportfs.h header	2007-07-17 10:23:06 -07:00
freevxfs	vxfs warning fixes	2007-07-16 09:05:41 -07:00
fuse	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
gfs2	mm: merge populate and nopage into fault (fixes nonlinear)	2007-07-19 10:04:41 -07:00
hfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
hfsplus	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
hostfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
hpfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
hppfs	[PATCH] Mark struct super_operations const	2007-02-12 09:48:47 -08:00
hugetlbfs	hugetlbfs: handle empty options string	2007-07-16 09:05:46 -07:00
isofs	knfsd: exportfs: add exportfs.h header	2007-07-17 10:23:06 -07:00
jbd	is_power_of_2(): jbd	2007-07-16 09:05:48 -07:00
jbd2	jbd2: Fix CONFIG_JBD_DEBUG ifdef to be CONFIG_JBD2_DEBUG	2007-07-18 08:57:06 -04:00
jffs2	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
jfs	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
lockd	knfsd: lockd: nfsd4: use same grace period for lockd and nfsd4	2007-07-17 10:23:07 -07:00
minix	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
msdos	[PATCH] mark struct inode_operations const 2	2007-02-12 09:48:46 -08:00
ncpfs	mm: merge populate and nopage into fault (fixes nonlinear)	2007-07-19 10:04:41 -07:00
nfs	locks: make posix_test_lock() interface more consistent	2007-07-18 19:17:19 -04:00
nfs_common
nfsd	locks: rename lease functions to reflect locks.c conventions	2007-07-18 19:14:12 -04:00
nls	NLS: Remove obsolete Makefile entries	2007-07-16 09:05:52 -07:00
ntfs	knfsd: exportfs: add exportfs.h header	2007-07-17 10:23:06 -07:00
ocfs2	mm: merge populate and nopage into fault (fixes nonlinear)	2007-07-19 10:04:41 -07:00
openpromfs	Remove SLAB_CTOR_CONSTRUCTOR	2007-05-17 05:23:04 -07:00
partitions	Fix LDM for new field in the VOL5 VBLK.	2007-07-16 12:01:30 -07:00
proc	kallsyms: make KSYM_NAME_LEN include space for trailing '\0'	2007-07-17 10:23:03 -07:00
qnx4	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
ramfs	Add __GFP_MOVABLE for callers to flag allocations from high memory that may be migrated	2007-07-17 10:22:59 -07:00
reiserfs	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
romfs	Remove SLAB_CTOR_CONSTRUCTOR	2007-05-17 05:23:04 -07:00
smbfs	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
sysfs	sysfs: cosmetic clean up on node creation failure paths	2007-07-18 15:49:50 -07:00
sysv	sendfile: remove .sendfile from filesystems that use generic_file_sendfile()	2007-07-10 08:04:13 +02:00
udf	arch/i386/* fs/* ipc/*: mark variables with uninitialized_var()	2007-07-17 16:23:19 -04:00
ufs	is_power_of_2: ufs/super.c	2007-07-16 09:05:50 -07:00
vfat	[PATCH] mark struct inode_operations const 3	2007-02-12 09:48:46 -08:00
xfs	mm: merge populate and nopage into fault (fixes nonlinear)	2007-07-19 10:04:41 -07:00
aio.c	signal/timer/event: KAIO eventfd support example	2007-05-11 08:29:37 -07:00
anon_inodes.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm	2007-07-17 11:50:26 -07:00
attr.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
bad_inode.c	sendfile: remove bad_sendfile() from bad_file_ops	2007-07-10 08:04:15 +02:00
binfmt_aout.c	[PATCH] VFS: change struct file to use struct path	2006-12-08 08:28:41 -08:00
binfmt_elf_fdpic.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
binfmt_elf.c	binfmt_elf warning fix	2007-07-16 09:05:47 -07:00
binfmt_em86.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
binfmt_flat.c	nommu: report correct errno in message	2007-06-08 17:23:32 -07:00
binfmt_misc.c	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
binfmt_script.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
binfmt_som.c
bio.c	unexport bio_{,un}map_user	2007-07-10 08:03:34 +02:00
block_dev.c	bd_claim_by_disk: fix warning	2007-07-16 09:05:50 -07:00
buffer.c	fs: introduce some page/buffer invariants	2007-07-17 10:23:02 -07:00
char_dev.c	[PATCH] remove protection of LANANA-reserved majors	2007-04-04 21:12:47 -07:00
compat_ioctl.c	compat32: ignore the LOOP_CLR_FD ioctl	2007-07-16 09:05:52 -07:00
compat.c	optimize compat_core_sys_select() by a using stack space for small fd sets	2007-05-23 20:14:12 -07:00
dcache.c	mm: clean up and kernelify shrinker registration	2007-07-17 10:23:00 -07:00
dcookies.c	[PATCH] slab: remove kmem_cache_t	2006-12-07 08:39:25 -08:00
direct-io.c	dio: remove bogus refcounting BUG_ON	2007-07-03 18:23:23 -07:00
dnotify.c	[PATCH] VFS: change struct file to use struct path	2006-12-08 08:28:41 -08:00
dquot.c	mm: clean up and kernelify shrinker registration	2007-07-17 10:23:00 -07:00
drop_caches.c	invalidate_mapping_pages(): add cond_resched	2007-07-16 09:05:36 -07:00
eventfd.c	eventfd use waitqueue lock ...	2007-05-18 13:09:34 -07:00
eventpoll.c	epoll: move kfree inside ep_free	2007-05-15 08:54:00 -07:00
exec.c	uselib: add missing MNT_NOEXEC check	2007-05-23 20:14:13 -07:00
fcntl.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
fifo.c	Detach sched.h from mm.h	2007-05-21 09:18:19 -07:00
file_table.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
file.c	[PATCH] fdtable: Provide free_fdtable() wrapper	2006-12-22 08:55:50 -08:00
filesystems.c	add filesystem subtype support	2007-05-08 11:15:01 -07:00
fs-writeback.c	Write back inode data pages even when the inode itself is locked	2007-01-26 12:53:20 -08:00
generic_acl.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
inode.c	mm: clean up and kernelify shrinker registration	2007-07-17 10:23:00 -07:00
inotify_user.c	[PATCH] inotify: read return val fix	2007-02-12 09:48:28 -08:00
inotify.c	Introduce a handy list_first_entry macro	2007-05-08 11:15:11 -07:00
internal.h	cleanup compat ioctl handling	2007-05-08 11:15:09 -07:00
ioctl.c	drop obsolete sys_ioctl export	2007-07-16 09:05:48 -07:00
ioprio.c	[PATCH] pid: replace do/while_each_task_pid with do/while_each_pid_task	2007-02-12 09:48:32 -08:00
Kconfig	jbd2: Move jbd2-debug file to debugfs	2007-07-18 08:50:18 -04:00
Kconfig.binfmt	fs: Kill sh dependency for binfmt_flat.	2007-05-21 14:34:00 +09:00
libfs.c	fs/libfs.c: >80 columns line break fix	2007-05-09 06:44:57 +02:00
locks.c	locks: fix vfs_test_lock() comment	2007-07-18 19:17:19 -04:00
Makefile	signal/timer/event: eventfd core	2007-05-11 08:29:36 -07:00
mbcache.c	mm: clean up and kernelify shrinker registration	2007-07-17 10:23:00 -07:00
mpage.c	consolidate generic_writepages and mpage_writepages	2007-05-11 08:29:35 -07:00
namei.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
namespace.c	fs/namespace.c should #include "internal.h"	2007-07-16 09:05:50 -07:00
nfsctl.c
no-block.c
open.c	sys_fallocate() implementation on i386, x86_64 and powerpc	2007-07-17 21:42:44 -04:00
pipe.c	pipe: add documentation and comments	2007-07-10 08:04:16 +02:00
pnode.c	Introduce a handy list_first_entry macro	2007-05-08 11:15:11 -07:00
pnode.h	[PATCH] rename struct namespace to struct mnt_namespace	2006-12-08 08:28:51 -08:00
posix_acl.c
quota_v1.c
quota_v2.c
quota.c	diskquota: 32bit quota tools on 64bit architectures	2007-07-16 09:05:48 -07:00
read_write.c	Remove remnants of sendfile()	2007-07-10 08:04:15 +02:00
read_write.h
readdir.c	ROUND_UP macro cleanup in fs/(select|compat|readdir).c	2007-05-08 11:15:09 -07:00
select.c	Style fix in fs/select.c	2007-05-09 07:10:02 +02:00
seq_file.c	seq_file: more atomicity in traverse()	2007-07-16 09:05:45 -07:00
signalfd.c	avoid spurious POLLIN returns in signalfd	2007-06-28 11:34:54 -07:00
splice.c	splice: direct splicing updates ppos twice	2007-07-16 15:02:48 +02:00
stack.c	[PATCH] fs/stack.c: Copy i_nlink after all other attributes are copied	2007-02-19 14:21:50 -08:00
stat.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
super.c	hugetlbfs: handle empty options string	2007-07-16 09:05:46 -07:00
sync.c	Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM	2007-06-28 11:38:30 -07:00
timerfd.c	timerfd use waitqueue lock ...	2007-05-18 13:09:34 -07:00
utimes.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00
xattr_acl.c	[PATCH] remove many unneeded #includes of sched.h	2007-02-14 08:09:54 -08:00
xattr.c	Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid check	2007-07-17 12:00:03 -07:00