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Mel Gorman 192e501b04 nfs: prevent page allocator recursions with swap over NFS. 
GFP_NOFS is _more_ permissive than GFP_NOIO in that it will initiate IO,
just not of any filesystem data.

The problem is that previously NOFS was correct because that avoids
recursion into the NFS code.  With swap-over-NFS, it is no longer correct
as swap IO can lead to this recursion.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Eric Paris <eparis@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Neil Brown <neilb@suse.de>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-31 18:42:48 -07:00
..
9p
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
adfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
affs
affs: use memweight()
2012-07-30 17:25:16 -07:00
afs
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
autofs4
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
befs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
bfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
btrfs
btrfs: use printk_get_level and printk_skip_level, add __printf, fix fallout
2012-07-30 17:25:14 -07:00
cachefiles
fs: cachefiles: add support for large files in filesystem caching
2012-07-30 17:25:21 -07:00
ceph
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
cifs
cifs: ensure that we always do cifsFileInfo_get under the spinlock
2012-07-25 14:51:30 -05:00
coda
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
configfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
cramfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
debugfs
Driver core merge for 3.6-rc1
2012-07-26 11:25:33 -07:00
devpts
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
dlm
dlm: fix missing dir remove
2012-07-16 14:24:43 -05:00
ecryptfs
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
efs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
exofs
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-07-23 12:27:27 -07:00
exportfs
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
ext2
ext2: use memweight()
2012-07-30 17:25:16 -07:00
ext3
ext3: use memweight()
2012-07-30 17:25:16 -07:00
ext4
ext4: use memweight()
2012-07-30 17:25:16 -07:00
fat
fat: refactor shortname parsing
2012-07-30 17:25:20 -07:00
freevxfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
fscache
…
fuse
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
gfs2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw
2012-07-24 17:57:05 -07:00
hfs
hfs: get rid of hfs_sync_super
2012-07-22 23:58:09 +04:00
hfsplus
hfsplus: use -ENOMEM when kzalloc() fails
2012-07-30 17:25:19 -07:00
hostfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
hpfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
hppfs
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
hugetlbfs
hugetlb: use mmu_gather instead of a temporary linked list for accumulating pages
2012-07-31 18:42:40 -07:00
isofs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-07-24 17:40:44 -07:00
jbd
jbd: Check return value of blkdev_issue_flush()
2012-07-09 23:38:36 +02:00
jbd2
jbd2: remove the second argument of kmap_atomic
2012-07-23 14:11:22 +08:00
jffs2
don't expose I_NEW inodes via dentry->d_inode
2012-07-23 00:00:58 +04:00
jfs
don't expose I_NEW inodes via dentry->d_inode
2012-07-23 00:00:58 +04:00
lockd
Merge branch 'for-3.5' of git://linux-nfs.org/~bfields/linux
2012-06-01 08:32:58 -07:00
logfs
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
minix
minixfs: fix block limit check
2012-07-30 17:25:19 -07:00
ncpfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
nfs
nfs: prevent page allocator recursions with swap over NFS.
2012-07-31 18:42:48 -07:00
nfs_common
…
nfsd
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
nilfs2
nilfs2: add omitted comments for different structures in driver implementation
2012-07-30 17:25:19 -07:00
nls
nls: fix (and rename) mac NLS table files and config options
2012-06-01 19:51:22 -07:00
notify
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
ntfs
ntfs: remove references to long gone super operations and unimplemented methods
2012-07-30 17:25:11 -07:00
ocfs2
ocfs2: use memweight()
2012-07-30 17:25:16 -07:00
omfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
openpromfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
proc
proc: do not allow negative offsets on /proc/<pid>/environ
2012-07-30 17:25:20 -07:00
pstore
pstore/ram: Make tracing log versioned
2012-07-17 16:48:09 -07:00
qnx4
qnx4fs: use memweight()
2012-07-30 17:25:16 -07:00
qnx6
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
quota
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-07-24 17:40:44 -07:00
ramfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
reiserfs
don't expose I_NEW inodes via dentry->d_inode
2012-07-23 00:00:58 +04:00
romfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
squashfs
stop passing nameidata to ->lookup()
2012-07-14 16:34:32 +04:00
sysfs
Driver core merge for 3.6-rc1
2012-07-26 11:25:33 -07:00
sysv
fs/sysv: stop using write_super and s_dirt
2012-07-22 23:58:12 +04:00
ubifs
* Added another debugfs knob for forcing UBIFS R/O mode without flushing caches
2012-07-23 15:50:52 -07:00
udf
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-07-24 17:40:44 -07:00
ufs
fs/ufs: get rid of write_super
2012-07-22 23:58:16 +04:00
xfs
xfs: update for 3.6-rc1
2012-07-30 13:37:53 -07:00
aio.c
aio: now fput() is OK from interrupt context; get rid of manual delayed __fput()
2012-07-22 23:57:59 +04:00
anon_inodes.c
anon_inodes: move allocation of anon_inode into ->mount()
2012-03-20 21:29:45 -04:00
attr.c
notify_change(): check that i_mutex is held
2012-07-14 16:35:42 +04:00
bad_inode.c
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
binfmt_aout.c
VM: add "vm_mmap()" helper function
2012-04-20 17:29:13 -07:00
binfmt_elf_fdpic.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-05-23 17:42:39 -07:00
binfmt_elf.c
binfmt_elf: switch elf_map() to vm_mmap/vm_munmap
2012-05-30 21:04:55 -04:00
binfmt_em86.c
__register_binfmt() made void
2012-03-20 21:29:46 -04:00
binfmt_flat.c
binfmt_flat: use vm_munmap, we are missing ->mmap_sem there
2012-05-30 21:04:56 -04:00
binfmt_misc.c
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
binfmt_script.c
__register_binfmt() made void
2012-03-20 21:29:46 -04:00
binfmt_som.c
VM: add "vm_mmap()" helper function
2012-04-20 17:29:13 -07:00
bio-integrity.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
bio.c
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
2012-05-30 08:52:42 -07:00
block_dev.c
vfs: Create function for iterating over block devices
2012-07-22 23:58:45 +04:00
buffer.c
block: fix infinite loop in __getblk_slow
2012-07-13 08:36:35 -07:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
The following text was taken from the original review request:
2012-03-24 10:24:31 -07:00
compat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-06-01 11:53:44 -07:00
dcache.c
__d_unalias() should refuse to move mountpoints
2012-07-14 16:35:15 +04:00
dcookies.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
direct-io.c
fs/direct-io.c: adjust suspicious bit operation
2012-07-14 16:32:46 +04:00
drop_caches.c
…
eventfd.c
eventfd: change int to __u64 in eventfd_signal()
2012-05-31 17:49:32 -07:00
eventpoll.c
PM: Rename CAP_EPOLLWAKEUP to CAP_BLOCK_SUSPEND
2012-07-17 21:37:27 +02:00
exec.c
coredump: fix wrong comments on core limits of pipe coredump case
2012-07-30 17:25:20 -07:00
fcntl.c
c/r: fcntl: add F_GETOWNER_UIDS option
2012-07-30 17:25:21 -07:00
fhandle.c
…
fifo.c
fifo: Do not restart open() if it already found a partner
2012-07-16 08:33:14 -07:00
file_table.c
switch fput to task_work_add
2012-07-22 23:57:58 +04:00
file.c
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:12:23 -07:00
filesystems.c
…
fs_struct.c
get rid of ->mnt_longterm
2012-07-14 16:32:47 +04:00
fs-writeback.c
mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads
2012-07-31 18:42:40 -07:00
generic_acl.c
…
inode.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2012-07-26 14:48:55 -07:00
internal.h
VFS: Split inode_permission()
2012-07-14 16:38:36 +04:00
ioctl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
ioprio.c
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
2012-05-30 08:52:42 -07:00
Kconfig
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-03-21 13:36:41 -07:00
Kconfig.binfmt
C6X: add support to build with BINFMT_ELF_FDPIC
2012-05-15 09:17:34 -04:00
libfs.c
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
locks.c
locks: fix checking of fcntl_setlease argument
2012-07-23 12:46:01 -07:00
Makefile
fs: initial qnx6fs addition
2012-03-20 21:29:38 -04:00
mbcache.c
…
mount.h
get rid of magic in proc_namespace.c
2012-07-14 16:32:48 +04:00
mpage.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
namei.c
tidy up namei.c a bit
2012-07-23 00:00:55 +04:00
namespace.c
VFS: Comment mount following code
2012-07-14 16:38:32 +04:00
no-block.c
…
open.c
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
pipe.c
pipe: remove KM_USER0 from comments
2012-07-24 15:27:34 +08:00
pnode.c
VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors
2012-07-14 16:37:27 +04:00
pnode.h
…
posix_acl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
proc_namespace.c
get rid of magic in proc_namespace.c
2012-07-14 16:32:48 +04:00
read_write.c
vfs: allow custom EOF in generic_file_llseek code
2012-07-23 00:00:15 +04:00
read_write.h
…
readdir.c
switch readdir/getdents to fget_light/fput_light
2012-05-29 23:28:29 -04:00
select.c
posix_types.h: Cleanup stale __NFDBITS and related definitions
2012-07-26 13:36:43 -07:00
seq_file.c
seq_file: Add seq_vprintf function and export it
2012-06-11 13:16:35 +01:00
signalfd.c
switch signalfd4() to fget_light/fput_light
2012-05-29 23:28:30 -04:00
splice.c
splice: fix racy pipe->buffers uses
2012-06-13 21:16:42 +02:00
stack.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
stat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-05-23 17:42:39 -07:00
statfs.c
switch statfs to fget_light/fput_light
2012-05-29 23:28:31 -04:00
super.c
vmscan: remove obsolete shrink_control comment
2012-07-31 18:42:43 -07:00
sync.c
vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes
2012-07-22 23:59:01 +04:00
timerfd.c
…
utimes.c
switch utimes() to fget_light/fput_light
2012-05-29 23:28:32 -04:00
xattr_acl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
xattr.c
fs/xattr.c:getxattr(): improve handling of allocation failures
2012-07-30 17:25:11 -07:00