linux-toradex.git/fs/ext4/Kconfig, branch v4.10

dax: fix build warnings with FS_DAX and !FS_IOMAP

2017-01-25T00:26:14+00:00

As reported by Arnd:

  https://lkml.org/lkml/2017/1/10/756

Compiling with the following configuration:

  # CONFIG_EXT2_FS is not set
  # CONFIG_EXT4_FS is not set
  # CONFIG_XFS_FS is not set
  # CONFIG_FS_IOMAP depends on the above filesystems, as is not set
  CONFIG_FS_DAX=y

generates build warnings about unused functions in fs/dax.c:

  fs/dax.c:878:12: warning: `dax_insert_mapping' defined but not used [-Wunused-function]
   static int dax_insert_mapping(struct address_space *mapping,
              ^~~~~~~~~~~~~~~~~~
  fs/dax.c:572:12: warning: `copy_user_dax' defined but not used [-Wunused-function]
   static int copy_user_dax(struct block_device *bdev, sector_t sector, size_t size,
              ^~~~~~~~~~~~~
  fs/dax.c:542:12: warning: `dax_load_hole' defined but not used [-Wunused-function]
   static int dax_load_hole(struct address_space *mapping, void **entry,
              ^~~~~~~~~~~~~
  fs/dax.c:312:14: warning: `grab_mapping_entry' defined but not used [-Wunused-function]
   static void *grab_mapping_entry(struct address_space *mapping, pgoff_t index,
                ^~~~~~~~~~~~~~~~~~

Now that the struct buffer_head based DAX fault paths and I/O path have
been removed we really depend on iomap support being present for DAX.
Make this explicit by selecting FS_IOMAP if we compile in DAX support.

This allows us to remove conditional selections of FS_IOMAP when FS_DAX
was present for ext2 and ext4, and to remove an #ifdef in fs/dax.c.

Link: http://lkml.kernel.org/r/1484087383-29478-1-git-send-email-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler 
Reported-by: Arnd Bergmann 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Jan Kara 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ext4: Add select for CONFIG_FS_IOMAP

2016-11-23T04:21:58+00:00

When ext4 is compiled with DAX support, it now needs the iomap code. Add
appropriate select to Kconfig.

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

ext4 crypto: migrate into vfs's crypto engine

2016-07-10T18:01:03+00:00

This patch removes the most parts of internal crypto codes.
And then, it modifies and adds some ext4-specific crypt codes to use the generic
facility.

Signed-off-by: Jaegeuk Kim 
Signed-off-by: Theodore Ts'o

ext4: Update EXT4_USE_FOR_EXT2 description

2015-09-24T11:27:47+00:00

Configuration option EXT4_USE_FOR_EXT2 has no effect on ext3 support.
Support for ext3 is always included now.

Signed-off-by: Jean Delvare 
Fixes: c290ea01ab ("fs: Remove ext3 filesystem driver")
Cc: Jan Kara 
Cc: Theodore Ts'o 
Cc: Andreas Dilger 
Signed-off-by: Jan Kara

ext4: Improve ext4 Kconfig test

2015-07-23T18:59:40+00:00

Now that ext4 driver must be used to access ext3 filesystems, improve
the Kconfig help text to better explain that using ext4 driver to access
the filesystem is fully compatible with the old ext3 driver.

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

fs: Remove ext3 filesystem driver

2015-07-23T18:59:40+00:00

The functionality of ext3 is fully supported by ext4 driver. Major
distributions (SUSE, RedHat) already use ext4 driver to handle ext3
filesystems for quite some time. There is some ugliness in mm resulting
from jbd cleaning buffers in a dirty page without cleaning page dirty
bit and also support for buffer bouncing in the block layer when stable
pages are required is there only because of jbd. So let's remove the
ext3 driver. This saves us some 28k lines of duplicated code.

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

ext4 crypto: require CONFIG_CRYPTO_CTR if ext4 encryption is enabled

2015-05-31T17:31:37+00:00

On arm64 this is apparently needed for CTS mode to function correctly.
Otherwise attempts to use CTS return ENOENT.

Change-Id: I732ea9a5157acc76de5b89edec195d0365f4ca63
Signed-off-by: Theodore Ts'o

ext4 crypto: do not select from EXT4_FS_ENCRYPTION

2015-05-02T14:29:19+00:00

This patch adds a tristate EXT4_ENCRYPTION to do the selections
for EXT4_FS_ENCRYPTION because selecting from a bool causes all
the selected options to be built-in, even if EXT4 itself is a
module.

Signed-off-by: Herbert Xu 
Signed-off-by: Theodore Ts'o

ext4 crypto: add ext4 encryption Kconfig

2015-04-11T11:46:47+00:00

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

ext4: fix Kconfig documentation for CONFIG_EXT4_DEBUG

2013-04-22T00:32:03+00:00

Fox the Kconfig documentation for CONFIG_EXT4_DEBUG to match the
change made by commit a0b30c1229: ext4: use module parameters instead
of debugfs for mballoc_debug

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