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review.shift-gmbh.com / SHIFTPHONES / android_kernel_shift_sdm845 / 7646a7516df2b6eb243f386d4a8e2df5be85be5f
commit7646a7516df2b6eb243f386d4a8e2df5be85be5f[log] [tgz]
authorHyeongseok Kim <hyeongseok@gmail.com>Thu Mar 25 08:09:50 2021 +0900
committerNamjae Jeon <namjae.jeon@samsung.com>Thu Mar 25 08:10:12 2021 +0900
tree99fa53361f0d18fe614752778bee39982d7c5d08
parent73138cb2dca9af189e4d21ac5c9f98355714b44a [diff]
exfat: introduce bitmap_lock for cluster bitmap access

s_lock which is for protecting concurrent access of file operations is
too huge for cluster bitmap protection, so introduce a new bitmap_lock
to narrow the lock range if only need to access cluster bitmap.

Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Acked-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
3 files changed
tree: 99fa53361f0d18fe614752778bee39982d7c5d08
  1. .travis.yml
  2. .travis_cmd_wrapper.pl
  3. .travis_get_mainline_kernel
  4. balloc.c
  5. cache.c
  6. dir.c
  7. exfat_fs.h
  8. exfat_raw.h
  9. fatent.c
  10. file.c
  11. inode.c
  12. Kconfig
  13. Makefile
  14. misc.c
  15. namei.c
  16. nls.c
  17. README.md
  18. super.c
README.md

exFAT filesystem

This is the exfat filesystem for support from the linux 4.1 kernel to the latest kernel.

Installing as a stand-alone module

Install prerequisite package for Fedora, RHEL:

	yum install kernel-devel-$(uname -r)

Build step:

	make
	sudo make install

To load the driver manually, run this as root:

	modprobe exfat

Installing as a part of the kernel

  1. Let's take [linux] as the path to your kernel source dir.
	cd [linux]
	cp -ar exfat [linux]/fs/
  1. edit [linux]/fs/Kconfig
	source "fs/fat/Kconfig"
	+source "fs/exfat/Kconfig"
	source "fs/ntfs/Kconfig"
  1. edit [linux]/fs/Makefile
	obj-$(CONFIG_FAT_FS)          += fat/
	+obj-$(CONFIG_EXFAT_FS)       += exfat/
	obj-$(CONFIG_BFS_FS)          += bfs/
  1. make menuconfig and set exfat
	File systems  --->
		DOS/FAT/NT Filesystems  --->
			<M> exFAT filesystem support
			(utf8) Default iocharset for exFAT

build your kernel