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f2fs: trigger correct checkpoint during umount

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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 <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-01-14 16:34:24 -08:00
parent 6f0aacbc3c
commit 30a5537f9a
2 changed files with 11 additions and 2 deletions
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1
fs/f2fs/f2fs.h
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@ -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 */

12
fs/f2fs/super.c
View File

@ -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");