linux.git/fs/jfs/ioctl.c, branch v4.2 Linux kernel source tree ioctl_compat: handle FITRIM 2015-07-09T18:42:21+00:00 Mikulas Patocka mikulas@twibright.com 2015-07-09T16:05:15+00:00 9abea2d64ce93b6909de7f83a7f681f572369708 The FITRIM ioctl has the same arguments on 32-bit and 64-bit architectures, so we can add it to the list of compatible ioctls and drop it from compat_ioctl method of various filesystems. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ted Ts'o <tytso@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
The FITRIM ioctl has the same arguments on 32-bit and 64-bit
architectures, so we can add it to the list of compatible ioctls and
drop it from compat_ioctl method of various filesystems.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ted Ts'o <tytso@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
new helper: file_inode(file) 2013-02-23T04:31:31+00:00 Al Viro viro@zeniv.linux.org.uk 2013-01-23T22:07:38+00:00 496ad9aa8ef448058e36ca7a787c61f2e63f0f54 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/jfs: TRIM support for JFS Filesystem 2012-09-17T16:58:19+00:00 Tino Reichardt milky-kernel@mcmilk.de 2012-09-17T16:58:19+00:00 b40c2e665cd552eae5fbdbb878bc29a34357668e This patch adds support for the two linux interfaces of the discard/TRIM command for SSD devices and sparse/thinly-provisioned LUNs. JFS will support batched discard via FITRIM ioctl and online discard with the discard mount option. Signed-off-by: Tino Reichardt <list-jfs@mcmilk.de> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> 
This patch adds support for the two linux interfaces of the discard/TRIM
command for SSD devices and sparse/thinly-provisioned LUNs.

JFS will support batched discard via FITRIM ioctl and online discard
with the discard mount option.

Signed-off-by: Tino Reichardt <list-jfs@mcmilk.de>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
vfs: mnt_drop_write_file() 2012-01-04T03:52:40+00:00 Al Viro viro@zeniv.linux.org.uk 2011-12-09T13:06:57+00:00 2a79f17e4a641a2f463cb512cb0ec349844a147b new helper (wrapper around mnt_drop_write()) to be used in pair with mnt_want_write_file(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
switch a bunch of places to mnt_want_write_file() 2012-01-04T03:52:35+00:00 Al Viro viro@zeniv.linux.org.uk 2011-11-23T16:57:51+00:00 a561be7100cd610bd2e082f3211c1dfb45835817 it's both faster (in case when file has been opened for write) and cleaner. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
it's both faster (in case when file has been opened for write) and cleaner.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
userns: rename is_owner_or_cap to inode_owner_or_capable 2011-03-24T02:47:13+00:00 Serge E. Hallyn serge@hallyn.com 2011-03-23T23:43:26+00:00 2e1496707560ecf98e9b0604622c0990f94861d3 And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by: David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
And give it a kernel-doc comment.

[akpm@linux-foundation.org: btrfs changed in linux-next]
Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Daniel Lezcano <daniel.lezcano@free.fr>
Acked-by: David Howells <dhowells@redhat.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[PATCH] r/o bind mounts: elevate write count for ioctls() 2008-04-19T04:29:24+00:00 Dave Hansen haveblue@us.ibm.com 2008-02-15T22:37:46+00:00 42a74f206b914db13ee1f5ae932dcd91a77c8579 Some ioctl()s can cause writes to the filesystem. Take these, and make them use mnt_want/drop_write() instead. [AV: updated] Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Some ioctl()s can cause writes to the filesystem.  Take these, and make them
use mnt_want/drop_write() instead.

[AV: updated]

Acked-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
BKL-removal: Implement a compat_ioctl handler for JFS 2008-02-07T19:45:29+00:00 Andi Kleen ak@suse.de 2008-01-27T23:02:02+00:00 ef1fc2f01e02951a0d8520ec3aa0b38606d74b55 The ioctls were already compatible except for the actual values so this was fairly easy to do. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> 
The ioctls were already compatible except for the actual values so this
was fairly easy to do.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
BKL-removal: Use unlocked_ioctl for jfs 2008-02-07T19:33:58+00:00 Andi Kleen ak@suse.de 2008-01-27T22:58:51+00:00 baab81fa518ecfac597402b462631f5593926623 Convert jfs_ioctl over to not use the BKL. The only potential race I could see was with two ioctls in parallel changing the flags and losing the updates. Use the i_mutex to protect against this. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> 
Convert jfs_ioctl over to not use the BKL. The only potential race
I could see was with two ioctls in parallel changing the flags
and losing the updates. Use the i_mutex to protect against this.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Forbid user to change file flags on quota files 2007-11-15T02:45:38+00:00 Jan Kara jack@suse.cz 2007-11-15T00:58:56+00:00 e47776a0a41a14a5634633c96e590827f552c4b5 Forbid user from changing file flags on quota files. User has no bussiness in playing with these flags when quota is on. Furthermore there is a remote possibility of deadlock due to a lock inversion between quota file's i_mutex and transaction's start (i_mutex for quota file is locked only when trasaction is started in quota operations) in ext3 and ext4. Signed-off-by: Jan Kara <jack@suse.cz> Cc: LIOU Payphone <lioupayphone@gmail.com> Cc: <linux-ext4@vger.kernel.org> Acked-by: Dave Kleikamp <shaggy@austin.ibm.com> Cc: <reiserfs-dev@namesys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Forbid user from changing file flags on quota files.  User has no bussiness
in playing with these flags when quota is on.  Furthermore there is a
remote possibility of deadlock due to a lock inversion between quota file's
i_mutex and transaction's start (i_mutex for quota file is locked only when
trasaction is started in quota operations) in ext3 and ext4.

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: LIOU Payphone <lioupayphone@gmail.com>
Cc: <linux-ext4@vger.kernel.org>
Acked-by: Dave Kleikamp <shaggy@austin.ibm.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>