提交 cde2d7a7 编写于 作者: T Theodore Ts'o

ext4: flush the extent status cache during EXT4_IOC_SWAP_BOOT

Previously we weren't swapping only some of the extent_status LRU
fields during the processing of the EXT4_IOC_SWAP_BOOT ioctl.  The
much safer thing to do is to just completely flush the extent status
tree when doing the swap.
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
Cc: Zheng Liu <gnehzuil.liu@gmail.com>
Cc: stable@vger.kernel.org
上级 6ae6514b
...@@ -77,8 +77,10 @@ static void swap_inode_data(struct inode *inode1, struct inode *inode2) ...@@ -77,8 +77,10 @@ static void swap_inode_data(struct inode *inode1, struct inode *inode2)
memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data)); memswap(ei1->i_data, ei2->i_data, sizeof(ei1->i_data));
memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags)); memswap(&ei1->i_flags, &ei2->i_flags, sizeof(ei1->i_flags));
memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize)); memswap(&ei1->i_disksize, &ei2->i_disksize, sizeof(ei1->i_disksize));
memswap(&ei1->i_es_tree, &ei2->i_es_tree, sizeof(ei1->i_es_tree)); ext4_es_remove_extent(inode1, 0, EXT_MAX_BLOCKS);
memswap(&ei1->i_es_lru_nr, &ei2->i_es_lru_nr, sizeof(ei1->i_es_lru_nr)); ext4_es_remove_extent(inode2, 0, EXT_MAX_BLOCKS);
ext4_es_lru_del(inode1);
ext4_es_lru_del(inode2);
isize = i_size_read(inode1); isize = i_size_read(inode1);
i_size_write(inode1, i_size_read(inode2)); i_size_write(inode1, i_size_read(inode2));
......
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