linux-stable.git/fs/ext4/ioctl.c, branch linux-4.3.y

ioctl_compat: handle FITRIM

2015-07-09T18:42:21+00:00

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 
Cc: Al Viro 
Cc: Ted Ts'o 
Signed-off-by: Linus Torvalds

ext4: use swap() in memswap()

2015-06-13T03:46:33+00:00

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.

Signed-off-by: Fabian Frederick 
Signed-off-by: Theodore Ts'o

ext4 crypto: fix sparse warnings in fs/ext4/ioctl.c

2015-06-08T16:23:21+00:00

[ Added another sparse fix for EXT4_IOC_GET_ENCRYPTION_POLICY while
  we're at it. --tytso ]

Signed-off-by: Fabian Frederick 
Signed-off-by: Theodore Ts'o

ext4 crypto: add encryption policy and password salt support

2015-04-11T11:48:01+00:00

Signed-off-by: Michael Halcrow 
Signed-off-by: Theodore Ts'o 
Signed-off-by: Ildar Muslukhov

ext4: remove unused header files

2015-04-03T03:47:42+00:00

Remove unused header files and header files which are included in
ext4.h.

Signed-off-by: Sheng Yong 
Signed-off-by: Theodore Ts'o

ext4: move handling of list of shrinkable inodes into extent status code

2014-11-25T16:49:25+00:00

Currently callers adding extents to extent status tree were responsible
for adding the inode to the list of inodes with freeable extents. This
is error prone and puts list handling in unnecessarily many places.

Just add inode to the list automatically when the first non-delay extent
is added to the tree and remove inode from the list when the last
non-delay extent is removed.

Signed-off-by: Jan Kara 
Signed-off-by: Theodore Ts'o

ext4: change LRU to round-robin in extent status tree shrinker

2014-11-25T16:45:37+00:00

In this commit we discard the lru algorithm for inodes with extent
status tree because it takes significant effort to maintain a lru list
in extent status tree shrinker and the shrinker can take a long time to
scan this lru list in order to reclaim some objects.

We replace the lru ordering with a simple round-robin.  After that we
never need to keep a lru list.  That means that the list needn't be
sorted if the shrinker can not reclaim any objects in the first round.

Cc: Andreas Dilger 
Signed-off-by: Zheng Liu 
Signed-off-by: Jan Kara 
Signed-off-by: Theodore Ts'o

ext4: Replace open coded mdata csum feature to helper function

2014-10-13T07:36:16+00:00

Besides the fact that this replacement improves code readability
it also protects from errors caused direct EXT4_S(sb)->s_es manipulation
which may result attempt to use uninitialized  csum machinery.

#Testcase_BEGIN
IMG=/dev/ram0
MNT=/mnt
mkfs.ext4 $IMG
mount $IMG $MNT
#Enable feature directly on disk, on mounted fs
tune2fs -O metadata_csum  $IMG
# Provoke metadata update, likey result in OOPS
touch $MNT/test
umount $MNT
#Testcase_END

# Replacement script
@@
expression E;
@@
- EXT4_HAS_RO_COMPAT_FEATURE(E, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
+ ext4_has_metadata_csum(E)

https://bugzilla.kernel.org/show_bug.cgi?id=82201

Signed-off-by: Dmitry Monakhov 
Signed-off-by: Theodore Ts'o 
Cc: stable@vger.kernel.org

ext4: grab missed write_count for EXT4_IOC_SWAP_BOOT

2014-10-03T16:47:23+00:00

Otherwise this provokes complain like follows:
WARNING: CPU: 12 PID: 5795 at fs/ext4/ext4_jbd2.c:48 ext4_journal_check_start+0x4e/0xa0()
Modules linked in: brd iTCO_wdt lpc_ich mfd_core igb ptp dm_mirror dm_region_hash dm_log dm_mod
CPU: 12 PID: 5795 Comm: python Not tainted 3.17.0-rc2-00175-gae5344f #158
Hardware name: Intel Corporation W2600CR/W2600CR, BIOS SE5C600.86B.99.99.x028.061320111235 06/13/2011
 0000000000000030 ffff8808116cfd28 ffffffff815c7dfc 0000000000000030
 0000000000000000 ffff8808116cfd68 ffffffff8106ce8c ffff8808116cfdc8
 ffff880813b16000 ffff880806ad6ae8 ffffffff81202008 0000000000000000
Call Trace:
 [] dump_stack+0x51/0x6d
 [] warn_slowpath_common+0x8c/0xc0
 [] ? ext4_ioctl+0x9e8/0xeb0
 [] warn_slowpath_null+0x1a/0x20
 [] ext4_journal_check_start+0x4e/0xa0
 [] __ext4_journal_start_sb+0x90/0x110
 [] ext4_ioctl+0x9e8/0xeb0
 [] ? ptrace_stop+0x24d/0x2f0
 [] ? alloc_pid+0x480/0x480
 [] ? ptrace_do_notify+0x92/0xb0
 [] do_vfs_ioctl+0x4e5/0x550
 [] ? _raw_spin_unlock_irq+0x2b/0x40
 [] SyS_ioctl+0x53/0x80
 [] tracesys+0xd0/0xd5

Reviewed-by: Jan Kara 
Signed-off-by: Dmitry Monakhov 
Signed-off-by: Theodore Ts'o 
Cc: stable@vger.kernel.org

ext4: clean up error handling in swap_inode_boot_loader()

2014-02-18T01:44:36+00:00

Tighten up the code to make the code easier to read and maintain.

Signed-off-by: "Theodore Ts'o"