f2fs: support soft block reservation

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It supports to extend reserved_blocks sysfs interface to be soft
threshold, which allows user configure it exceeding current available
user space. This patch also introduces a new sysfs interface called
current_reserved_blocks, which shows the current blocks that have
already been reserved.

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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Yunlong Song 2017-10-27 20:45:05 +08:00 • committed by Jaegeuk Kim

parent bf9c142785

commit 80d4214501

4 changed files with 37 additions and 7 deletions

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13

Documentation/ABI/testing/sysfs-fs-f2fs

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13

fs/f2fs/f2fs.h

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3

fs/f2fs/super.c

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15

fs/f2fs/sysfs.c

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