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Message-ID: <20180928173721.GB64391@jaegeuk-macbookpro.roam.corp.google.com>
Date: Fri, 28 Sep 2018 10:37:21 -0700
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: Chao Yu <yuchao0@...wei.com>
Cc: Chao Yu <chao@...nel.org>, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] f2fs: fix quota info to adjust recovered data
On 09/27, Chao Yu wrote:
> On 2018/9/26 10:09, Jaegeuk Kim wrote:
> > Oh, yeah. :P
> > I started to run all my tests with this. Let me see what will happen.
>
> Any updates of this test?
Not a good result. I'm trying to fix some bug in your patch.
Could you take a look at this?
---
fs/f2fs/checkpoint.c | 8 ++++++++
fs/f2fs/f2fs.h | 1 +
fs/f2fs/gc.c | 4 ++++
fs/f2fs/super.c | 12 +++++++++++-
4 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 524b87667cf4..b4b1586c683c 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1494,6 +1494,7 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
{
struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
unsigned long long ckpt_ver;
+ bool need_up = false;
int err = 0;
if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
@@ -1506,6 +1507,11 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
f2fs_msg(sbi->sb, KERN_WARNING,
"Start checkpoint disabled!");
}
+ if (!is_sbi_flag_set(sbi, SBI_IS_MOUNT) &&
+ !is_sbi_flag_set(sbi, SBI_IS_CLOSE)) {
+ need_up = true;
+ down_read(&sbi->sb->s_umount);
+ }
mutex_lock(&sbi->cp_mutex);
if (!is_sbi_flag_set(sbi, SBI_IS_DIRTY) &&
@@ -1582,6 +1588,8 @@ int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc)
trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint");
out:
mutex_unlock(&sbi->cp_mutex);
+ if (need_up)
+ up_read(&sbi->sb->s_umount);
return err;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 57c829dd107e..461656aed78a 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1089,6 +1089,7 @@ struct inode_management {
enum {
SBI_IS_DIRTY, /* dirty flag for checkpoint */
SBI_IS_CLOSE, /* specify unmounting */
+ SBI_IS_MOUNT, /* specify mounting */
SBI_NEED_FSCK, /* need fsck.f2fs to fix */
SBI_POR_DOING, /* recovery is doing or not */
SBI_NEED_SB_WRITE, /* need to recover superblock */
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index adaf5a695b12..ee6dbd72ad8a 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -55,6 +55,9 @@ static int gc_thread_func(void *data)
f2fs_stop_checkpoint(sbi, false);
}
+ if (!down_read_trylock(&sbi->sb->s_umount))
+ continue;
+
if (!sb_start_write_trylock(sbi->sb))
continue;
@@ -104,6 +107,7 @@ static int gc_thread_func(void *data)
f2fs_balance_fs_bg(sbi);
next:
sb_end_write(sbi->sb);
+ up_read(&sbi->sb->s_umount);
} while (!kthread_should_stop());
return 0;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 1d89d5e9e829..603386525336 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1534,6 +1534,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
}
}
#endif
+ set_sbi_flag(sbi, SBI_IS_MOUNT);
/* recover superblocks we couldn't write due to previous RO mount */
if (!(*flags & SB_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) {
@@ -1653,6 +1654,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
(test_opt(sbi, POSIX_ACL) ? SB_POSIXACL : 0);
limit_reserve_root(sbi);
+ clear_sbi_flag(sbi, SBI_IS_MOUNT);
return 0;
restore_gc:
if (need_restart_gc) {
@@ -1672,6 +1674,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
#endif
sbi->mount_opt = org_mount_opt;
sb->s_flags = old_sb_flags;
+ clear_sbi_flag(sbi, SBI_IS_MOUNT);
return err;
}
@@ -1705,6 +1708,7 @@ static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
congestion_wait(BLK_RW_ASYNC, HZ/50);
goto repeat;
}
+ set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
return PTR_ERR(page);
}
@@ -1716,6 +1720,7 @@ static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data,
}
if (unlikely(!PageUptodate(page))) {
f2fs_put_page(page, 1);
+ set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
return -EIO;
}
@@ -1757,6 +1762,7 @@ static ssize_t f2fs_quota_write(struct super_block *sb, int type,
congestion_wait(BLK_RW_ASYNC, HZ/50);
goto retry;
}
+ set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR);
break;
}
@@ -1793,7 +1799,6 @@ static qsize_t *f2fs_get_reserved_space(struct inode *inode)
static int f2fs_quota_on_mount(struct f2fs_sb_info *sbi, int type)
{
-
if (is_set_ckpt_flags(sbi, CP_QUOTA_NEED_FSCK_FLAG)) {
f2fs_msg(sbi->sb, KERN_ERR,
"quota sysfile may be corrupted, skip loading it");
@@ -3151,6 +3156,8 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
init_waitqueue_head(&sbi->cp_wait);
init_sb_info(sbi);
+ set_sbi_flag(sbi, SBI_IS_MOUNT);
+
err = init_percpu_info(sbi);
if (err)
goto free_bio_info;
@@ -3369,6 +3376,8 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
cur_cp_version(F2FS_CKPT(sbi)));
f2fs_update_time(sbi, CP_TIME);
f2fs_update_time(sbi, REQ_TIME);
+
+ clear_sbi_flag(sbi, SBI_IS_MOUNT);
return 0;
free_meta:
@@ -3433,6 +3442,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
shrink_dcache_sb(sb);
goto try_onemore;
}
+ clear_sbi_flag(sbi, SBI_IS_MOUNT);
return err;
}
--
2.19.0.605.g01d371f741-goog
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