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f2fs: fix checkpoint=disable:%u%% 

commit 1ae18f71cb upstream.

When parsing the mount option, we don't have sbi->user_block_count.
Should do it after getting it.

Cc: <stable@vger.kernel.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Jaegeuk Kim 2020-05-15 17:20:50 -07:00 committed by Greg Kroah-Hartman
parent 1866b1493e
commit 9660edf672
2 changed files with 20 additions and 6 deletions
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1
fs/f2fs/f2fs.h
View File

@ -138,6 +138,7 @@ struct f2fs_mount_info {
int alloc_mode; /* segment allocation policy */
int fsync_mode; /* fsync policy */
bool test_dummy_encryption; /* test dummy encryption */
block_t unusable_cap_perc; /* percentage for cap */
block_t unusable_cap; /* Amount of space allowed to be
* unusable when disabling checkpoint
*/

25
fs/f2fs/super.c
View File

@ -277,6 +277,22 @@ static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
F2FS_OPTION(sbi).s_resgid));
}
static inline void adjust_unusable_cap_perc(struct f2fs_sb_info *sbi)
{
if (!F2FS_OPTION(sbi).unusable_cap_perc)
return;
if (F2FS_OPTION(sbi).unusable_cap_perc == 100)
F2FS_OPTION(sbi).unusable_cap = sbi->user_block_count;
else
F2FS_OPTION(sbi).unusable_cap = (sbi->user_block_count / 100) *
F2FS_OPTION(sbi).unusable_cap_perc;
f2fs_info(sbi, "Adjust unusable cap for checkpoint=disable = %u / %u%%",
F2FS_OPTION(sbi).unusable_cap,
F2FS_OPTION(sbi).unusable_cap_perc);
}
static void init_once(void *foo)
{
struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo;
@ -790,12 +806,7 @@ static int parse_options(struct super_block *sb, char *options)
return -EINVAL;
if (arg < 0 || arg > 100)
return -EINVAL;
if (arg == 100)
F2FS_OPTION(sbi).unusable_cap =
sbi->user_block_count;
else
F2FS_OPTION(sbi).unusable_cap =
(sbi->user_block_count / 100) * arg;
F2FS_OPTION(sbi).unusable_cap_perc = arg;
set_opt(sbi, DISABLE_CHECKPOINT);
break;
case Opt_checkpoint_disable_cap:
@ -1735,6 +1746,7 @@ skip:
(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
limit_reserve_root(sbi);
adjust_unusable_cap_perc(sbi);
*flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
return 0;
restore_gc:
@ -3397,6 +3409,7 @@ try_onemore:
sbi->reserved_blocks = 0;
sbi->current_reserved_blocks = 0;
limit_reserve_root(sbi);
adjust_unusable_cap_perc(sbi);
for (i = 0; i < NR_INODE_TYPE; i++) {
INIT_LIST_HEAD(&sbi->inode_list[i]);