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| author |   Jaegeuk Kim <jaegeuk@kernel.org> | 2017-12-27 15:05:52 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-01-16 15:39:58 -0800 |
| commit | 7e65be49ed94f89cbf5add7dadf6e338f0cc6e7b (patch) | |
| tree | ccea427a00e1202c15bfb7e23b4d0162e47fa233 /fs/f2fs/sysfs.c | |
| parent | f2fs: check segment type in __f2fs_replace_block (diff) | |
| download | linux-dev-7e65be49ed94f89cbf5add7dadf6e338f0cc6e7b.tar.xz linux-dev-7e65be49ed94f89cbf5add7dadf6e338f0cc6e7b.zip | |
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>
Diffstat (limited to 'fs/f2fs/sysfs.c')
| -rw-r--r-- | fs/f2fs/sysfs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 93c3364250dd..ab6028c332aa 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -162,7 +162,8 @@ static ssize_t f2fs_sbi_store(struct f2fs_attr *a, #endif if (a->struct_type == RESERVED_BLOCKS) { spin_lock(&sbi->stat_lock); - if (t > (unsigned long)sbi->user_block_count) { + if (t > (unsigned long)(sbi->user_block_count - + sbi->root_reserved_blocks)) { spin_unlock(&sbi->stat_lock); return -EINVAL; } |