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f2fs: add reserved blocks for root user
authorJaegeuk Kim <jaegeuk@kernel.org>
Wed, 27 Dec 2017 23:05:52 +0000 (15:05 -0800)
committerJaegeuk Kim <jaegeuk@kernel.org>
Thu, 8 Feb 2018 02:05:47 +0000 (18:05 -0800)
commit62438ba87b798597d73aa86d0181aaafd11cd067
treedf7149b5db6e85180b0ccd2ce42d972946aaa180
parent06a366757ff766936c307afef902300f602cb6a2
f2fs: add reserved blocks for root user

This patch allows root to reserve some blocks via mount option.

"-o reserve_root=N" means N x 4KB-sized blocks for root only.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/f2fs.h
fs/f2fs/super.c
fs/f2fs/sysfs.c