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2020-04-22exfat: truncate atimes to 2s granularityEric Sandeen5-1/+24
The timestamp for access_time has double seconds granularity(There is no 10msIncrement field for access_time unlike create/modify_time). exfat's atimes are restricted to only 2s granularity so after we set an atime, round it down to the nearest 2s and set the sub-second component of the timestamp to 0. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-04-22exfat: properly set s_time_granEric Sandeen1-1/+1
The s_time_gran superblock field indicates the on-disk nanosecond granularity of timestamps, and for exfat that seems to be 10ms, so set s_time_gran to 10000000ns. Without this, in-memory timestamps change when they get re-read from disk. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-04-22exfat: remove 'bps' mount-optionTetsuhiro Kohada1-1/+0
remount fails because exfat_show_options() returns unsupported option 'bps'. > # mount -o ro,remount > exfat: Unknown parameter 'bps' To fix the problem, just remove 'bps' option from exfat_show_options(). Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-04-22exfat: Unify access to the boot sectorTetsuhiro Kohada2-30/+16
Unify access to boot sector via 'sbi->pbr_bh'. This fixes vol_flags inconsistency at read failed in fs_set_vol_flags(), and buffer_head leak in __exfat_fill_super(). Signed-off-by: Tetsuhiro Kohada <Kohada.Tetsuhiro@dc.MitsubishiElectric.co.jp> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-04-22exfat: add missing MODULE_ALIAS_FS()Thomas Backlund1-0/+1
This adds the necessary MODULE_ALIAS_FS() to exfat so the module gets automatically loaded when an exfat filesystem is mounted. Signed-off-by: Thomas Backlund <tmb@mageia.org> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-04-22exfat: Fix discard supportPali Rohár1-2/+3
Discard support was always unconditionally disabled. Now it is disabled only in the case when blk_queue_discard() returns false. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
2020-03-05exfat: update file system parameter handlingValdis Kletnieks1-17/+11
Al Viro recently reworked the way file system parameters are handled Update super.c to work with it in linux-next 20200203. Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add Kconfig and MakefileNamjae Jeon2-0/+29
This adds the Kconfig and Makefile for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add nls operationsNamjae Jeon1-0/+831
This adds the implementation of nls operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add misc operationsNamjae Jeon1-0/+163
This adds the implementation of misc operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add exfat cacheNamjae Jeon1-0/+325
This adds the implementation of exfat cache. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add bitmap operationsNamjae Jeon1-0/+280
This adds the implementation of bitmap operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add fat entry operationsNamjae Jeon1-0/+463
This adds the implementation of fat entry operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add file operationsNamjae Jeon1-0/+360
This adds the implementation of file operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add directory operationsNamjae Jeon1-0/+1238
This adds the implementation of directory operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add inode operationsNamjae Jeon2-0/+2119
This adds the implementation of inode operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add super block operationsNamjae Jeon1-0/+728
This adds the implementation of superblock operations for exfat. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-05exfat: add in-memory and on-disk structures and headersNamjae Jeon2-0/+703
This adds in-memory and on-disk structures and headers. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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