diff options
| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-02-25 18:46:45 +0100 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2019-03-13 02:59:18 +0100 |
| commit | 428e3bcf07696ff252b7ff3ff7711c2b9bbdb908 (patch) | |
| tree | ac45ae40c6165175976cc197c5b4e201ca9df644 | |
| parent | f2fs: no need to take page lock in readdir (diff) | |
| download | linux-428e3bcf07696ff252b7ff3ff7711c2b9bbdb908.tar.xz linux-428e3bcf07696ff252b7ff3ff7711c2b9bbdb908.zip | |
f2fs: give random value to i_generation
This follows to give random number to i_generation along with commit
232530680290b ("ext4: improve smp scalability for inode generation")
This can be used for DUN for UFS HW encryption.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/namei.c | 3 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 1 |
3 files changed, 2 insertions, 4 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 19cbf17550c7..3007759dd2dd 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1242,8 +1242,6 @@ struct f2fs_sb_info { unsigned int nquota_files; /* # of quota sysfile */ - u32 s_next_generation; /* for NFS support */ - /* # of pages, see count_type */ atomic_t nr_pages[NR_COUNT_TYPE]; /* # of allocated blocks */ diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 62d9829f3a6a..f218d9424d8b 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -10,6 +10,7 @@ #include <linux/pagemap.h> #include <linux/sched.h> #include <linux/ctype.h> +#include <linux/random.h> #include <linux/dcache.h> #include <linux/namei.h> #include <linux/quotaops.h> @@ -50,7 +51,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) inode->i_blocks = 0; inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); F2FS_I(inode)->i_crtime = inode->i_mtime; - inode->i_generation = sbi->s_next_generation++; + inode->i_generation = prandom_u32(); if (S_ISDIR(inode->i_mode)) F2FS_I(inode)->i_current_depth = 1; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 45121190a2ba..42eb5c86330a 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -3129,7 +3129,6 @@ try_onemore: sb->s_maxbytes = sbi->max_file_blocks << le32_to_cpu(raw_super->log_blocksize); sb->s_max_links = F2FS_LINK_MAX; - get_random_bytes(&sbi->s_next_generation, sizeof(u32)); #ifdef CONFIG_QUOTA sb->dq_op = &f2fs_quota_operations; |