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* f2fs crypto: add f2fs encryption KconfigJaegeuk Kim2015-05-291-0/+19
| | | | | | | | | | | | | | | This patch adds f2fs encryption config. This patch integrates: "ext4 crypto: require CONFIG_CRYPTO_CTR if ext4 encryption is enabled On arm64 this is apparently needed for CTS mode to function correctly. Otherwise attempts to use CTS return ENOENT." Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: relocate Kconfig from misc filesystemsJaegeuk Kim2015-04-111-1/+1
| | | | | | | | The f2fs has been shipped on many smartphone devices during a couple of years. So, it is worth to relocate Kconfig into main page from misc filesystems for developers to choose it more easily. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: add f2fs_io_tracer supportJaegeuk Kim2015-01-101-0/+10
| | | | | | | | This patch adds: o initial trace.c and trace.h with skeleton functions o Kconfig and Makefile to activate this feature Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: fix typoarter972014-08-191-2/+2
| | | | | | | | | Fix typo and some grammatical errors. The words "filesystem" and "readahead" are being used without the space treewide. Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
* f2fs: introduce CONFIG_F2FS_CHECK_FS for BUG_ON controlJaegeuk Kim2013-10-291-0/+8
| | | | | | | This config will support an option to remove so many BUG_ONs that degrade the performance potentially. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
* f2fs: support xattr security labelsJaegeuk Kim2013-06-111-0/+12
| | | | | | | | | | | | | | | This patch adds the support of security labels for f2fs, which will be used by Linus Security Models (LSMs). Quote from http://en.wikipedia.org/wiki/Linux_Security_Modules: "Linux Security Modules (LSM) is a framework that allows the Linux kernel to support a variety of computer security models while avoiding favoritism toward any single security implementation. The framework is licensed under the terms of the GNU General Public License and is standard part of the Linux kernel since Linux 2.6. AppArmor, SELinux, Smack and TOMOYO Linux are the currently accepted modules in the official kernel.". Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
* f2fs: resolve build failuresJaegeuk Kim2012-12-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There exist two build failures reported by Randy Dunlap as follows. (on i386) a. (config-r8857) ERROR: "f2fs_xattr_advise_handler" [fs/f2fs/f2fs.ko] undefined! Key configs in (config-r8857) are as follows. CONFIG_F2FS_FS=m # CONFIG_F2FS_STAT_FS is not set CONFIG_F2FS_FS_XATTR=y # CONFIG_F2FS_FS_POSIX_ACL is not set The error was occurred due to the function location that we made a mistake. Recently we added a new functionality for users to indicate cold files explicitly through xattr operations (i.e., f2fs_xattr_advise_handler). This handler should have been added in xattr.c instead of acl.c in order to avoid an undefined operation like in this case where XATTR is set and ACL is not set. b. (config-r8855) fs/f2fs/file.c: In function 'f2fs_vm_page_mkwrite': fs/f2fs/file.c:97:2: error: implicit declaration of function 'block_page_mkwrite_return' Key config in (config-r8855) is CONFIG_BLOCK. Obviously, f2fs works on top of the block device so that we should consider carefully a sort of config dependencies. The reason why this error was occurred was that f2fs_vm_page_mkwrite() calls block_page_mkwrite_return() which is enalbed only if CONFIG_BLOCK is set. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net>
* f2fs: update Kconfig and MakefileJaegeuk Kim2012-12-111-0/+52
This adds Makefile and Kconfig for f2fs, and updates Makefile and Kconfig files in the fs directory. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>