Dmitry Monakhov 913e027ca1 fsioctl.c: make generic_block_fiemap() signal-tolerant ...

__generic_block_fiemap may spin very long time for large sparse files.

Without this patch an unprivileged user may abuse system resources simply
by spawning a vast number of unkilable busyloops (works on ext2/ext3):

  truncate --size 1T test
  for ((i=0;i<1024;i++))
  do
         filefrag test > /dev/null &
  done

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2015-02-10 14:30:30 -08:00

..

caching

sched: Remove proliferation of wait_on_bit() action functions

2014-07-16 15:10:39 +02:00

cifs

update CIFS TODO list

2014-08-02 01:26:07 -05:00

configfs

configfs: convert to umode_t

2012-01-03 22:54:57 -05:00

nfs

switch d_materialise_unique() users to d_splice_alias()

2014-11-19 13:01:20 -05:00

pohmelfs

Documentation: Fix multiple typo in Documentation

2012-03-07 16:08:24 +01:00

.gitignore

Documentation: update .gitignore files

2014-09-26 11:02:59 +02:00

9p.txt

9p: update documentation

2014-01-24 10:55:21 -06:00

00-INDEX

Documentation/: update 00-INDEX files

2014-02-10 16:01:40 -08:00

adfs.txt

adfs: add hexadecimal filetype suffix option

2011-03-22 17:44:17 -07:00

affs.txt

affs: add mount option to avoid filename truncates

2014-04-07 16:36:08 -07:00

afs.txt

AFS: Documentation updates

2009-08-19 10:40:13 -07:00

autofs4-mount-control.txt

doc: fix double words

2014-03-21 13:16:58 +01:00

autofs4.txt

autofs: the documentation I wanted to read

2014-10-14 02:18:17 +02:00

automount-support.txt

…

befs.txt

Documentation: befs.txt: no maintainer, orphaned

2011-08-13 18:34:03 -07:00

bfs.txt

…

btrfs.txt

btrfs: Add treelog mount option.

2014-01-28 13:20:20 -08:00

ceph.txt

ceph: enable/disable dentry complete flags via mount option

2012-01-12 11:00:40 -08:00

coda.txt

…

cramfs.txt

…

debugfs.txt

debugfs: Have debugfs_print_regs32() return void

2014-11-05 14:13:38 -05:00

devpts.txt

…

directory-locking

vfs: take i_mutex on renamed file

2013-11-09 00:16:40 -05:00

dlmfs.txt

Documentation/: it's -> its where appropriate

2010-04-23 02:09:52 +02:00

dnotify_test.c

Documentation/fs/: split txt and source files

2010-03-12 15:52:35 -08:00

dnotify.txt

Documentation/fs/: split txt and source files

2010-03-12 15:52:35 -08:00

ecryptfs.txt

…

efivarfs.txt

efivarfs: Add documentation for the EFI variable filesystem

2012-10-30 10:39:18 +00:00

exofs.txt

exofs: Add option to mount by osdname

2011-03-15 15:02:51 +02:00

ext2.txt

…

ext3.txt

ext3: allow specifying external journal by pathname mount option

2013-07-31 22:11:15 +02:00

ext4.txt

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2013-09-06 09:36:28 -07:00

f2fs.txt

f2fs: introduce -o fastboot for reducing booting time only

2014-11-04 17:34:15 -08:00

fiemap.txt

fsioctl.c: make generic_block_fiemap() signal-tolerant

2015-02-10 14:30:30 -08:00

files.txt

Wrap accesses to the fd_sets in struct fdtable

2012-02-19 10:30:52 -08:00

fuse.txt

Documentation/: it's -> its where appropriate

2010-04-23 02:09:52 +02:00

gfs2-glocks.txt

GFS2: Update glock doc to add new stats info

2012-05-10 12:41:40 +01:00

gfs2-uevents.txt

Documentation: Fix multiple typo in Documentation

2012-03-07 16:08:24 +01:00

gfs2.txt

GFS2: Update main gfs2 doc

2012-05-10 11:45:31 +01:00

hfs.txt

Documentation: HFS is orphaned

2011-11-04 12:01:48 -07:00

hfsplus.txt

Documentation: update URL to hfsplus Technote 1150

2014-02-20 14:48:51 +01:00

hpfs.txt

Documentation/: it's -> its where appropriate

2010-04-23 02:09:52 +02:00

inotify.txt

inotify: update documentation to reflect code changes

2015-02-10 14:30:28 -08:00

isofs.txt

Documentation: update broken web addresses.

2010-08-04 15:21:40 +02:00

jfs.txt

doc: fix misspellings with 'codespell' tool

2013-05-28 12:02:12 +02:00

Locking

vfs: add i_op->dentry_open()

2014-10-24 00:14:35 +02:00

locks.txt

doc: fix broken references

2011-09-27 18:08:04 +02:00

logfs.txt

fix "seperate" typos in comments

2010-05-10 11:56:30 +02:00

Makefile

Documentation: add makefiles for more targets

2014-09-26 11:02:56 +02:00

mandatory-locking.txt

…

ncpfs.txt

ncpfs: remove dead URL from documentation

2009-09-23 07:39:42 -07:00

nilfs2.txt

nilfs2: update project's web site in nilfs2.txt

2014-04-03 16:21:26 -07:00

ntfs.txt

NTFS: Remove changelog from Documentation/filesystems/ntfs.txt.

2014-10-16 12:43:57 +01:00

ocfs2.txt

ocfs2: add a mount option journal_async_commit on ocfs2 filesystem

2015-02-10 14:30:29 -08:00

omfs.txt

…

overlayfs.txt

ovl: rename filesystem type to "overlay"

2014-11-20 16:39:59 +01:00

path-lookup.txt

Fix common misspellings

2011-03-31 11:26:23 -03:00

porting

kill f_dentry macro

2014-11-19 13:02:11 -05:00

proc.txt

Documentation: fix formatting to make 's' happy

2014-11-24 07:40:35 -07:00

qnx6.txt

doc: filesystems : Fix typo in Documentations/filesystems

2013-08-20 13:45:56 +02:00

quota.txt

…

ramfs-rootfs-initramfs.txt

initmpfs: use initramfs if rootfstype= or root= specified

2013-09-11 15:59:38 -07:00

relay.txt

doc: Fix typo in doucmentations

2013-07-25 12:34:15 +02:00

romfs.txt

Documentation/filesystems/romfs.txt: fixing link to genromfs

2011-02-17 22:04:46 +01:00

seq_file.txt

seq_file: Rename seq_overflow() to seq_has_overflowed() and make public

2014-10-29 20:26:06 -04:00

sharedsubtree.txt

doc: spelling error changes

2014-05-05 15:32:05 +02:00

spufs.txt

…

squashfs.txt

Squashfs: Add LZ4 compression configuration option

2014-11-27 18:48:44 +00:00

sysfs-pci.txt

PCI: Allow read/write access to sysfs I/O port resources

2010-07-30 09:32:08 -07:00

sysfs-tagging.txt

doc: Fix typo in doucmentations

2013-07-25 12:34:15 +02:00

sysfs.txt

Documentation/filesystems/sysfs.txt: fix device_attribute declaration

2014-01-23 16:37:00 -08:00

sysv-fs.txt

…

tmpfs.txt

mempolicy: document cpuset interaction with tmpfs mpol mount option

2010-05-25 08:06:57 -07:00

ubifs.txt

UBIFS: switch self-check knobs to debugfs

2011-07-04 10:54:28 +03:00

udf.txt

…

ufs.txt

…

vfat.txt

fs/fat/: add support for DOS 1.x formatted volumes

2014-06-06 16:08:10 -07:00

vfs.txt

Merge tag 'trace-seq-file-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into for-next

2014-11-19 13:02:53 -05:00

xfs-delayed-logging-design.txt

Fix common misspellings

2011-03-31 11:26:23 -03:00

xfs-self-describing-metadata.txt

xfs: add metadata CRC documentation

2013-04-27 13:27:43 -05:00

xfs.txt

doc: filesystems : Fix typo in Documentations/filesystems

2013-08-20 13:45:56 +02:00

xip.txt

…