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Hugh Dickins f9454548e1 don't unlink an active swapfile 
Peter Cordes is sorry that he rm'ed his swapfiles while they were in use,
he then had no pathname to swapoff.  It's a curious little oversight, but
not one worth a lot of hackery.  Kudos to Willy Tarreau for turning this
around from a discussion of synthetic pathnames to how to prevent unlink.
Mimic immutable: prohibit unlinking an active swapfile in may_delete()
(and don't worry my little head over the tiny race window).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Willy Tarreau <w@1wt.eu>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Peter Cordes <peter@cordes.ca>
Cc: Bodo Eggert <7eggert@gmx.de>
Cc: David Newall <davidn@davidnewall.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-19 18:49:59 -08:00
..
9p
9p: fix format warning
2008-10-22 18:48:45 -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
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
autofs
vfs: Use const for kernel parser table
2008-10-13 10:10:37 -07:00
autofs4
autofs4: collect version check return
2008-11-06 15:41:17 -08:00
befs
befs: annotate fs32 on tests for superblock endianness
2008-10-16 11:21:46 -07:00
bfs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
cifs
prevent cifs_writepages() from skipping unwritten pages
2008-11-18 04:30:07 +00:00
coda
Switch to a valid email address...
2008-10-27 08:40:17 -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: fix shutdown cleanup
2008-11-13 13:22:34 -06:00
ecryptfs
eCryptfs: Allocate up to two scatterlists for crypto ops on keys
2008-11-19 18:49:58 -08:00
efs
[PATCH] switch all filesystems over to d_obtain_alias
2008-10-23 05:13:01 -04:00
exportfs
[PATCH] prepare vfs_readdir() callers to returning filldir result
2008-10-23 05:13:10 -04:00
ext2
Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
2008-10-23 10:23:07 -07:00
ext3
ext3: Clean up outdated and incorrect comment for ext3_write_super()
2008-11-12 17:17:17 -08:00
ext4
ext4: add checksum calculation when clearing UNINIT flag in ext4_new_inode
2008-11-07 09:21:01 -05:00
fat
fat: i_blocks warning fix
2008-11-06 15:41:22 -08:00
freevxfs
…
fuse
saner FASYNC handling on file close
2008-11-01 09:49:46 -07:00
gfs2
[PATCH] switch all filesystems over to d_obtain_alias
2008-10-23 05:13:01 -04:00
hfs
[PATCH] move executable checking into ->permission()
2008-10-23 05:13:25 -04:00
hfsplus
[PATCH] move executable checking into ->permission()
2008-10-23 05:13:25 -04:00
hostfs
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -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
jbd: don't give up looking for space so easily in __log_wait_for_space
2008-11-06 22:37:59 -05:00
jbd2
jbd2: don't give up looking for space so easily in __jbd2_log_wait_for_space
2008-11-06 22:38:07 -05:00
jffs2
Merge git://git.infradead.org/mtd-2.6
2008-11-06 15:43:13 -08:00
jfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
2008-10-23 10:23:07 -07:00
lockd
NLM: Set address family before calling nlm_host_rebooted()
2008-10-30 17:19:30 -04:00
minix
SL*B: drop kmem cache argument from constructor
2008-07-26 12:00:07 -07:00
ncpfs
[PATCH] don't pass nameidata to __ncp_lookup_validate()
2008-07-26 20:53:37 -04:00
nfs
NFS: Convert nfs_attr_generation_counter into an atomic_long
2008-10-28 15:21:40 -04:00
nfs_common
…
nfsd
Fix nfsd truncation of readdir results
2008-11-09 15:15:50 -05:00
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
ocfs2: Check search result in ocfs2_xattr_block_get()
2008-11-10 09:51:47 -08:00
omfs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
openpromfs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
partitions
block/md: fix md autodetection
2008-11-18 15:08:56 +01:00
proc
Fix broken ownership of /proc/sys/ files
2008-11-16 15:09:52 -08:00
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
Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
2008-10-23 10:23:07 -07:00
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
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
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] get rid of on-stack dentry in udf
2008-10-23 05:13:15 -04:00
ufs
[PATCH] fix ->llseek for more directories
2008-10-23 05:13:21 -04:00
xfs
[XFS] XFS: Check for valid transaction headers in recovery
2008-11-10 18:01:50 +11:00
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] vfs: make security_inode_setattr() calling consistent
2008-10-23 05:13:27 -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
block: fix __blkdev_get() for removable devices
2008-11-06 08:41:56 +01:00
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
select: deal with math overflow from borderline valid userland data
2008-10-26 11:22:08 -07:00
dcache.c
[PATCH] fs: add a sanity check in d_free
2008-10-23 05:17:12 -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: avoid double-inserts in case of EFAULT
2008-10-26 12:09:49 -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] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
file_table.c
saner FASYNC handling on file close
2008-11-01 09:49:46 -07:00
file.c
[PATCH] merge locate_fd() and get_unused_fd()
2008-08-01 11:25:23 -04:00
filesystems.c
proc: move /proc/filesystems to fs/filesystems.c
2008-10-23 14:27:09 +04:00
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
saner FASYNC handling on file close
2008-11-01 09:49:46 -07:00
inotify.c
Fix inotify watch removal/umount races
2008-11-15 12:26:44 -08:00
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
[patch 1/3] FS_MBCACHE: don't needlessly make it built-in
2008-10-23 05:13:26 -04:00
Kconfig.binfmt
add CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
2008-10-20 08:52:39 -07:00
libfs.c
fs: remove prepare_write/commit_write
2008-10-30 11:38:45 -07:00
locks.c
Merge branch 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
2008-10-23 12:04:37 -07:00
Makefile
fat: move fs/vfat/* and fs/msdos/* to fs/fat
2008-11-06 15:41:20 -08:00
mbcache.c
…
mpage.c
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
namei.c
don't unlink an active swapfile
2008-11-19 18:49:59 -08:00
namespace.c
vfs: fix shrink_submounts
2008-11-12 17:17:17 -08:00
nfsctl.c
…
no-block.c
…
open.c
[PATCH] introduce fmode_t, do annotations
2008-10-21 07:47:06 -04:00
pipe.c
saner FASYNC handling on file close
2008-11-01 09:49:46 -07:00
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] prepare vfs_readdir() callers to returning filldir result
2008-10-23 05:13:10 -04:00
select.c
select: deal with math overflow from borderline valid userland data
2008-10-26 11:22:08 -07:00
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
fs: remove prepare_write/commit_write
2008-10-30 11:38:45 -07:00
stack.c
…
stat.c
[PATCH] sanitize __user_walk_fd() et.al.
2008-07-26 20:53:34 -04:00
super.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
2008-10-23 10:23:07 -07:00
sync.c
SYNC_FILE_RANGE_WRITE may and will block. Document that.
2008-07-24 10:47:17 -07:00
timerfd.c
hrtimer: convert timerfd to the new hrtimer apis
2008-09-05 21:35:09 -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