From 30a5537f9a9e91937aad6a47f55683f7ce0be257 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 14 Jan 2015 16:34:24 -0800 Subject: [PATCH] f2fs: trigger correct checkpoint during umount This patch fixes to trigger checkpoint with umount flag when kill_sb was called. In kill_sb, f2fs_sync_fs was finally called, but at this time, f2fs can't do checkpoint with CP_UMOUNT. After then, f2fs_put_super is not doing checkpoint, since it is not dirty. So, this patch adds a flag to indicate f2fs_sync_fs is called during umount. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/f2fs.h | 1 + fs/f2fs/super.c | 12 ++++++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index c2cf040d5284..1795ce231118 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -525,6 +525,7 @@ struct f2fs_sb_info { struct f2fs_super_block *raw_super; /* raw super block pointer */ int s_dirty; /* dirty flag for checkpoint */ bool need_fsck; /* need fsck.f2fs to fix */ + bool s_closing; /* specify unmounting */ /* for node-related operations */ struct f2fs_nm_info *nm_info; /* node manager */ diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 0e97974bbbbd..84f95cd4076a 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -487,7 +487,8 @@ int f2fs_sync_fs(struct super_block *sb, int sync) if (sync) { struct cp_control cpc; - cpc.reason = test_opt(sbi, FASTBOOT) ? CP_UMOUNT : CP_SYNC; + cpc.reason = (test_opt(sbi, FASTBOOT) || sbi->s_closing) ? + CP_UMOUNT : CP_SYNC; mutex_lock(&sbi->gc_mutex); write_checkpoint(sbi, &cpc); mutex_unlock(&sbi->gc_mutex); @@ -1190,11 +1191,18 @@ static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); } +static void kill_f2fs_super(struct super_block *sb) +{ + if (sb->s_root) + F2FS_SB(sb)->s_closing = true; + kill_block_super(sb); +} + static struct file_system_type f2fs_fs_type = { .owner = THIS_MODULE, .name = "f2fs", .mount = f2fs_mount, - .kill_sb = kill_block_super, + .kill_sb = kill_f2fs_super, .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("f2fs");