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14f7dd6320
linux/fs
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David Woodhouse 14f7dd6320 [PATCH] Copy XFS readdir hack into nfsd code. 
Some file systems with their own internal locking have problems with the
way that nfsd calls the ->lookup() method from within a filldir function
called from their ->readdir() method. The recursion back into the file
system code can cause deadlock.

XFS has a fairly hackish solution to this which involves doing the
readdir() into a locally-allocated buffer, then going back through it
calling the filldir function afterwards. It's not ideal, but it works.

It's particularly suboptimal because XFS does this for local file
systems too, where it's completely unnecessary.

Copy this hack into the NFS code where it can be used only for NFS
export. In response to feedback, use it unconditionally rather than only
for the affected file systems.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-10-23 05:13:05 -04:00
..
9p 9p: fix device file handling 2008-10-17 12:44:46 -05:00
adfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
affs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
afs afs: convert to new aops 2008-10-16 11:21:48 -07:00
autofs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
autofs4 autofs4: add miscellaneous device for ioctls 2008-10-16 11:21:39 -07:00
befs befs: annotate fs32 on tests for superblock endianness 2008-10-16 11:21:46 -07:00
bfs bfs: fix Lockdep warning 2008-09-13 14:41:51 -07:00
cifs fs/Kconfig: move CIFS out 2008-10-20 08:52:42 -07:00
coda device create: misc: convert device_create_drvdata to device_create 2008-10-16 09:24:43 -07:00
configfs [PATCH] assorted path_lookup() -> kern_path() conversions 2008-10-23 05:12:52 -04:00
cramfs cramfs: fix named-pipe handling 2008-08-20 15:40:32 -07:00
debugfs integrity: special fs magic 2008-10-13 09:47:43 +11:00
devpts vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
dlm dlm: choose better identifiers 2008-09-05 09:51:30 -05:00
ecryptfs [PATCH] assorted path_lookup() -> kern_path() conversions 2008-10-23 05:12:52 -04:00
efs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
exportfs [PATCH] reduce the stack footprint of exportfs_decode_fh() 2008-10-23 05:13:03 -04:00
ext2 [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
ext3 [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
ext4 [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
fat [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
freevxfs
fuse [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
gfs2 [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
hfs hfs: fix namelength memory corruption 2008-10-16 11:21:46 -07:00
hfsplus hfsplus: fix possible deadlock when handling corrupted extents 2008-10-20 08:52:38 -07:00
hostfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
hpfs [PATCH] hpfs: cleanup ->setattr 2008-10-23 05:12:58 -04:00
hppfs [patch] hppfs: remove hppfs_permission 2008-07-26 20:53:07 -04:00
hugetlbfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
isofs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
jbd fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
jbd2 fs/Kconfig: move ext2, ext3, ext4, JBD, JBD2 out 2008-10-20 11:43:59 -07:00
jffs2 [JFFS2] Write buffer offset adjustment for NOR-ECC (Sibley) flash 2008-10-18 11:54:09 +01:00
jfs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
lockd NLM: Remove "proto" argument from lockd_up() 2008-10-04 17:12:27 -04:00
minix SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
msdos fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
ncpfs [PATCH] don't pass nameidata to __ncp_lookup_validate() 2008-07-26 20:53:37 -04:00
nfs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
nfs_common
nfsd [PATCH] Copy XFS readdir hack into nfsd code. 2008-10-23 05:13:05 -04:00
nls remove CONFIG_KMOD from fs 2008-10-17 02:38:36 +11:00
ntfs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
ocfs2 [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
omfs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
openpromfs SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
partitions block: add partition attribute for partition number 2008-10-17 08:46:56 +02:00
proc Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-10-20 13:23:01 -07:00
qnx4 SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ramfs Ramfs and Ram Disk pages are unevictable 2008-10-20 08:50:26 -07:00
reiserfs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
romfs romfs_readpage: don't report errors for pages beyond i_size 2008-07-30 14:30:34 -07:00
smbfs [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
sysfs kobject: Cleanup kobject_rename and !CONFIG_SYSFS 2008-10-16 09:24:52 -07:00
sysv SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
ubifs Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6 2008-10-20 09:19:03 -07:00
udf [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
ufs vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
vfat fatfs: add UTC timestamp option 2008-07-25 10:53:34 -07:00
xfs [PATCH] switch all filesystems over to d_obtain_alias 2008-10-23 05:13:01 -04:00
aio.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
anon_inodes.c flag parameters: NONBLOCK in anon_inode_getfd 2008-07-24 10:47:28 -07:00
attr.c [patch 4/4] vfs: immutable inode checking cleanup 2008-07-26 20:53:28 -04:00
bad_inode.c [PATCH] sanitize ->permission() prototype 2008-07-26 20:53:14 -04:00
binfmt_aout.c tracehook: exec 2008-07-26 12:00:08 -07:00
binfmt_elf_fdpic.c binfmt_elf_fdpic: Update for cputime changes. 2008-10-20 20:17:18 -07:00
binfmt_elf.c Merge branch 'v28-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-10-20 13:19:56 -07:00
binfmt_em86.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_flat.c uclinux: fix gzip header parsing in binfmt_flat.c 2008-10-16 11:21:29 -07:00
binfmt_misc.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_script.c Allow recursion in binfmt_script and binfmt_misc 2008-10-16 11:21:38 -07:00
binfmt_som.c binfmt_som.c: add MODULE_LICENSE 2008-10-16 11:21:38 -07:00
bio-integrity.c block: Introduce integrity data ownership flag 2008-10-09 08:56:21 +02:00
bio.c block: mark bio_split_pool static 2008-10-09 08:57:05 +02:00
block_dev.c [PATCH] assorted path_lookup() -> kern_path() conversions 2008-10-23 05:12:52 -04:00
buffer.c fs: buffer lock use lock bitops 2008-10-20 08:52:32 -07:00
char_dev.c [PATCH] tidy up chrdev_open 2008-10-23 05:12:59 -04:00
compat_binfmt_elf.c
compat_ioctl.c remove unused #include <linux/dirent.h>'s 2008-07-25 10:53:34 -07:00
compat.c compat: move cp_compat_stat to common code 2008-10-16 11:21:33 -07:00
dcache.c [PATCH] kill d_alloc_anon 2008-10-23 05:13:02 -04:00
dcookies.c
direct-io.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
dnotify.c
dquot.c [PATCH] switch quota_on-related stuff to kern_path() 2008-10-23 05:12:44 -04:00
drop_caches.c
eventfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
eventpoll.c epoll: drop unnecessary test 2008-10-16 11:21:32 -07:00
exec.c coredump: format_corename: don't append .%pid if multi-threaded 2008-10-20 08:52:39 -07:00
fcntl.c [PATCH] clean dup2() up a bit 2008-08-01 11:25:24 -04:00
fifo.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
file_table.c [PATCH] f_count may wrap around 2008-07-26 20:53:40 -04:00
file.c [PATCH] merge locate_fd() and get_unused_fd() 2008-08-01 11:25:23 -04:00
filesystems.c
fs-writeback.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
generic_acl.c
inode.c fs/inode.c: properly init address_space->writeback_index 2008-08-15 08:35:44 -07:00
inotify_user.c inotify: fix lock ordering wrt do_page_fault's mmap_sem 2008-10-02 15:53:13 -07:00
inotify.c
internal.h
ioctl.c provide generic_block_fiemap() only with BLOCK=y 2008-10-12 11:44:37 -07:00
ioprio.c fix setpriority(PRIO_PGRP) thread iterator breakage 2008-08-20 15:40:32 -07:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse 2008-10-20 12:53:27 -07:00
Kconfig.binfmt add CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS 2008-10-20 08:52:39 -07:00
libfs.c [PATCH] new helper: d_obtain_alias 2008-10-23 05:13:00 -04:00
locks.c SL*B: drop kmem cache argument from constructor 2008-07-26 12:00:07 -07:00
Makefile Configure out AIO support 2008-10-16 11:21:51 -07:00
mbcache.c
mpage.c Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
namei.c [PATCH] make O_EXCL in nd->intent.flags visible in nd->flags 2008-10-23 05:12:56 -04:00
namespace.c [PATCH] no need for noinline stuff in fs/namespace.c anymore 2008-10-23 03:34:22 -04:00
nfsctl.c
no-block.c
open.c tty: the vhangup syscall is racy 2008-10-13 09:51:41 -07:00
pipe.c [PATCH] reuse xxx_fifo_fops for xxx_pipe_fops 2008-07-26 20:53:06 -04:00
pnode.c
pnode.h
posix_acl.c
quota_v1.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
quota_v2.c quota: move function-macros from quota.h to quotaops.h 2008-07-25 10:53:35 -07:00
quota.c quota: cleanup loop in sync_dquots() 2008-07-25 10:53:35 -07:00
read_write.c [PATCH] generic_file_llseek tidyups 2008-10-23 05:12:59 -04:00
read_write.h
readdir.c [PATCH] fix regular readdir() and friends 2008-08-25 01:18:08 -04:00
select.c
seq_file.c seq_file: add seq_cpumask_list(), seq_nodemask_list() 2008-10-20 08:52:39 -07:00
signalfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
splice.c Don't allow splice() to files opened with O_APPEND 2008-10-09 14:26:38 -07:00
stack.c
stat.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
super.c fix soft lock up at NFS mount via per-SB LRU-list of unused dentries 2008-07-24 10:47:15 -07:00
sync.c SYNC_FILE_RANGE_WRITE may and will block. Document that. 2008-07-24 10:47:17 -07:00
timerfd.c flag parameters: check magic constants 2008-07-24 10:47:29 -07:00
utimes.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00
xattr_acl.c
xattr.c [PATCH] sanitize __user_walk_fd() et.al. 2008-07-26 20:53:34 -04:00