Louis Rilling b3e76af874 configfs: Fix deadlock with racing rmdir() and rename() ...

This patch fixes the deadlock between racing sys_rename() and configfs_rmdir().

The idea is to avoid locking i_mutexes of default groups in
configfs_detach_prep(), and rely instead on the new configfs_dirent_lock to
protect against configfs_dirent's linkage mutations. To ensure that an mkdir()
racing with rmdir() will not create new items in a to-be-removed default group,
we make configfs_new_dirent() check for the CONFIGFS_USET_DROPPING flag right
before linking the new dirent, and return error if the flag is set. This makes
racing mkdir()/symlink()/dir_open() fail in places where errors could already
happen, resp. in (attach_item()|attach_group())/create_link()/new_dirent().

configfs_depend() remains safe since it locks all the path from configfs root,
and is thus mutually exclusive with rmdir().

An advantage of this is that now detach_groups() unconditionnaly takes the
default groups i_mutex, which makes it more consistent with populate_groups().

Signed-off-by: Louis Rilling <Louis.Rilling@kerlabs.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>

2008-07-14 13:57:16 -07:00

..

9p

9p: fix O_APPEND in legacy mode

2008-07-03 09:59:03 -05:00

adfs

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

affs

[PATCH] fix reservation discarding in affs

2008-05-06 13:45:33 -04:00

afs

Fix various old email addresses for dwmw2

2008-06-06 11:29:10 -07:00

autofs

mount options: fix autofs

2008-02-08 09:22:40 -08:00

autofs4

autofs: path_{get,put}() cleanups

2008-05-01 08:04:01 -07:00

befs

byteorder: don't directly include linux/byteorder/generic.h

2008-05-16 12:01:45 -07:00

bfs

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

cifs

cifs: fix wksidarr declaration to be big-endian friendly

2008-07-12 14:33:42 -07:00

coda

codafs: fix build warning

2008-04-29 08:06:04 -07:00

configfs

configfs: Fix deadlock with racing rmdir() and rename()

2008-07-14 13:57:16 -07:00

cramfs

fs: Remove unnecessary inclusions of asm/semaphore.h

2008-04-18 22:16:44 -04:00

debugfs

DEBUGFS: Correct location of debugfs API documentation.

2008-04-30 16:52:47 -07:00

devpts

devpts: factor out PTY index allocation

2008-04-30 08:29:48 -07:00

dlm

dlm: fix plock dev_write return value

2008-05-19 15:37:27 -05:00

ecryptfs

ecryptfs: remove unnecessary mux from ecryptfs_init_ecryptfs_miscdev()

2008-07-04 10:40:05 -07:00

efs

efs: update error msg to not refer to deleted read_inode()

2008-04-02 15:28:19 -07:00

exportfs

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

ext2

ext2: retry block allocation if new blocks are allocated from system zone

2008-04-28 08:58:43 -07:00

ext3

ext3: add missing unlock to error path in ext3_quota_write()

2008-07-04 10:40:05 -07:00

ext4

ext4: add missing unlock to an error path in ext4_quota_write()

2008-07-04 10:40:05 -07:00

fat

fat: relax the permission check of fat_setattr()

2008-06-12 18:05:39 -07:00

freevxfs

fs/freevxfs/: proper externs

2008-04-29 08:06:00 -07:00

fuse

fuse: fix thinko in max I/O size calucation

2008-06-17 18:08:10 -07:00

gfs2

[GFS2] fix gfs2 block allocation (cleaned up)

2008-06-24 19:02:28 +01:00

hfs

hfs: fix warning with 64k PAGE_SIZE

2008-04-30 08:29:52 -07:00

hfsplus

Fix hfsplus oops on image without extents

2008-05-13 08:02:24 -07:00

hostfs

uml: fix hostfs tv_usec calculations

2008-02-05 09:44:30 -08:00

hpfs

mount options: fix hpfs

2008-02-08 09:22:40 -08:00

hppfs

fix hppfs Makefile breakage

2008-05-21 16:55:58 -07:00

hugetlbfs

mm: bdi: add separate writeback accounting capability

2008-04-30 08:29:50 -07:00

isofs

isofs: fix access to unallocated memory when reading corrupted filesystem

2008-04-30 08:29:33 -07:00

jbd

jbd: need to hold j_state_lock to updates to transaction t_state to T_COMMIT

2008-05-14 19:11:14 -07:00

jbd2

jbd2: Fix barrier fallback code to re-lock the buffer head

2008-06-03 22:31:11 -04:00

jffs2

Merge git://git.infradead.org/mtd-2.6

2008-05-01 11:15:28 -07:00

jfs

proc: remove proc_root_fs

2008-04-29 08:06:18 -07:00

lockd

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

minix

iget: stop the MINIX filesystem from using iget() and read_inode()

2008-02-07 08:42:28 -08:00

msdos

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

ncpfs

ncpfs: use get/put_unaligned_* helpers

2008-04-29 08:06:28 -07:00

nfs

NFS: Fix readdir cache invalidation

2008-07-08 15:22:40 -04:00

nfs_common

[PATCH] nfs_common endianness annotations

2006-10-20 10:26:41 -07:00

nfsd

nfsd: reorder printk in do_probe_callback to avoid use-after-free

2008-05-18 19:13:07 -04:00

nls

sparse pointer use of zero as null

2007-10-18 14:37:31 -07:00

ntfs

ntfs: le*_add_cpu conversion

2008-05-24 09:56:08 -07:00

ocfs2

ocfs2: Don't snprintf() without a format.

2008-07-14 13:57:15 -07:00

openpromfs

iget: stop OPENPROMFS from using iget() and read_inode()

2008-02-07 08:42:29 -08:00

partitions

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

proc

Fix pagemap_read() use of struct mm_walk

2008-07-05 13:13:44 -07:00

qnx4

iget: stop QNX4 from using iget() and read_inode()

2008-02-07 08:42:28 -08:00

ramfs

mm: bdi: add separate writeback accounting capability

2008-04-30 08:29:50 -07:00

reiserfs

reiserfs: discard prealloc in reiserfs_delete_inode

2008-07-08 12:39:31 -07:00

romfs

ROMFS: Fix up an error in iget removal

2008-03-19 18:53:36 -07:00

smbfs

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

sysfs

sysfs: remove error messages for -EEXIST case

2008-05-14 22:34:16 -07:00

sysv

sysv: [bl]e*_add_cpu conversion

2008-04-30 08:29:52 -07:00

udf

udf: Fix regression in UDF anchor block detection

2008-06-24 11:38:03 +02:00

ufs

ufs: remove unneeded ufs_put_inode prototype

2008-05-13 08:02:23 -07:00

vfat

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

xfs

Fix reference counting race on log buffers

2008-07-11 11:37:18 -07:00

aio.c

uml: activate_mm: remove the dead PF_BORROWED_MM check

2008-06-06 11:36:22 -07:00

anon_inodes.c

[PATCH] sanitize anon_inode_getfd()

2008-05-01 13:08:50 -04:00

attr.c

VFS: make notify_change pass ATTR_KILL_S*ID to setattr operations

2007-10-18 14:37:22 -07:00

bad_inode.c

iget: introduce a function to register iget failure

2008-02-07 08:42:26 -08:00

binfmt_aout.c

fs/binfmt_aout.c: use printk_ratelimit()

2008-04-29 08:06:04 -07:00

binfmt_elf_fdpic.c

nommu: fix ksize() abuse

2008-06-06 11:29:13 -07:00

binfmt_elf.c

Remove last traces of a.out support from ELF loader.

2008-06-16 10:20:57 -07:00

binfmt_em86.c

binfmt_misc.c: avoid potential kernel stack overflow

2008-04-29 08:06:04 -07:00

binfmt_flat.c

nommu: fix ksize() abuse

2008-06-06 11:29:13 -07:00

binfmt_misc.c

binfmt_misc.c: avoid potential kernel stack overflow

2008-04-29 08:06:04 -07:00

binfmt_script.c

binfmt_misc.c: avoid potential kernel stack overflow

2008-04-29 08:06:04 -07:00

binfmt_som.c

[PATCH] sanitize handling of shared descriptor tables in failing execve()

2008-04-25 09:23:53 -04:00

bio.c

docbook: fix bio missing parameter

2008-05-07 18:35:03 +02:00

block_dev.c

[PATCH] fix cgroup-inflicted breakage in block_dev.c

2008-06-23 08:30:55 -04:00

buffer.c

Properly notify block layer of sync writes

2008-07-01 09:07:34 +02:00

char_dev.c

fs: remove unused fops from struct char_device_struct

2008-04-29 08:06:01 -07:00

compat_binfmt_elf.c

x86: compat_binfmt_elf

2008-01-30 13:31:46 +01:00

compat_ioctl.c

tty: The big operations rework

2008-04-30 08:29:47 -07:00

compat.c

[PATCH] get rid of leak in compat_execve()

2008-05-16 17:23:05 -04:00

dcache.c

[patch 2/3] vfs: dcache cleanups

2008-06-23 13:07:00 -04:00

dcookies.c

d_path: Make d_path() use a struct path

2008-02-14 21:17:09 -08:00

direct-io.c

Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user

2008-02-05 09:44:13 -08:00

dnotify.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

dquot.c

quota: don't call sync_fs() from vfs_quota_off() when there's no quota turn off

2008-05-13 08:02:23 -07:00

drop_caches.c

vfs: skip inodes without pages to free in drop_pagecache_sb()

2008-04-29 08:06:05 -07:00

eventfd.c

[PATCH] sanitize anon_inode_getfd()

2008-05-01 13:08:50 -04:00

eventpoll.c

[PATCH] sanitize anon_inode_getfd()

2008-05-01 13:08:50 -04:00

exec.c

exec: fix stack excutability without PT_GNU_STACK

2008-07-10 13:25:43 -07:00

fcntl.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

fifo.c

Detach sched.h from mm.h

2007-05-21 09:18:19 -07:00

file_table.c

[PATCH] split linux/file.h

2008-05-01 13:08:16 -04:00

file.c

[PATCH] avoid multiplication overflows and signedness issues for max_fds

2008-05-16 17:22:52 -04:00

filesystems.c

add filesystem subtype support

2007-05-08 11:15:01 -07:00

fs-writeback.c

fs/fs-writeback.c: make 2 functions static

2008-04-29 08:06:00 -07:00

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

VFS: fix unused variable warning

2008-05-06 13:13:37 -07:00

inotify_user.c

Remove duplicated unlikely() in IS_ERR()

2008-04-29 08:06:25 -07:00

inotify.c

inotify: remove debug code

2008-02-06 10:41:07 -08:00

internal.h

[PATCH] move a bunch of declarations to fs/internal.h

2008-04-21 23:11:01 -04:00

ioctl.c

make vfs_ioctl() static

2008-04-29 08:06:00 -07:00

ioprio.c

cfq-iosched: relax IOPRIO_CLASS_IDLE restrictions

2008-01-28 11:38:15 +01:00

Kconfig

[PATCH 1/2] ocfs2: Add CONFIG_OCFS2_FS_STATS config option

2008-07-14 13:57:14 -07:00

Kconfig.binfmt

frv: don't offer BINFMT_FLAT

2008-06-06 11:29:08 -07:00

libfs.c

add kernel-doc for simple_read_from_buffer and memory_read_from_buffer

2008-07-04 10:40:07 -07:00

locks.c

[patch 4/4] flock: remove unused fields from file_lock_operations

2008-06-23 11:52:30 -04:00

Makefile

x86: compat_binfmt_elf Kconfig

2008-01-30 13:31:46 +01:00

mbcache.c

vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrs

2008-04-15 19:35:41 -07:00

mpage.c

docbook: fix filesystems.tmpl source files

2008-03-03 10:47:13 -08:00

namei.c

[patch 3/4] vfs: fix ERR_PTR abuse in generic_readlink

2008-06-23 11:52:30 -04:00

namespace.c

fs: replace remaining __FUNCTION__ occurrences

2008-04-30 08:29:54 -07:00

nfsctl.c

Introduce path_put()

2008-02-14 21:13:33 -08:00

no-block.c

…

open.c

security: filesystem capabilities: fix fragile setuid fixup code

2008-07-04 10:40:08 -07:00

pipe.c

[patch 1/4] vfs: path_{get,put}() cleanups

2008-06-23 11:52:29 -04:00

pnode.c

[patch 7/7] vfs: mountinfo: show dominating group id

2008-04-23 00:05:09 -04:00

pnode.h

[patch 7/7] vfs: mountinfo: show dominating group id

2008-04-23 00:05:09 -04:00

posix_acl.c

…

quota_v1.c

quota: do not allow setting of quota limits to too high values

2008-04-28 08:58:32 -07:00

quota_v2.c

quota: le*_add_cpu conversion

2008-04-30 08:29:51 -07:00

quota.c

quota: quota core changes for quotaon on remount

2008-04-28 08:58:33 -07:00

read_write.c

fs: use loff_t type instead of long long

2008-04-22 15:17:11 -07:00

read_write.h

…

readdir.c

Use mutex_lock_killable in vfs_readdir

2007-12-06 17:39:54 -05:00

select.c

Fix performance regression on lmbench select benchmark

2008-06-22 12:23:15 -07:00

seq_file.c

[patch 2/7] vfs: mountinfo: add seq_file_root()

2008-04-23 00:04:38 -04:00

signalfd.c

[PATCH] sanitize anon_inode_getfd()

2008-05-01 13:08:50 -04:00

splice.c

splice: handle try_to_release_page() failure

2008-05-28 14:49:27 +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

Introduce path_put()

2008-02-14 21:13:33 -08:00

super.c

make __put_super() static

2008-04-29 08:06:00 -07:00

sync.c

vfs: fix unconditional write_super() call in file_fsync()

2008-04-29 08:06:06 -07:00

timerfd.c

[PATCH] sanitize anon_inode_getfd()

2008-05-01 13:08:50 -04:00

utimes.c

[patch for 2.6.26 4/4] vfs: utimensat(): fix write access check for futimens()

2008-06-23 08:43:52 -04:00

xattr_acl.c

[PATCH] remove many unneeded #includes of sched.h

2007-02-14 08:09:54 -08:00

xattr.c

xattr: add missing consts to function arguments

2008-04-29 08:06:06 -07:00