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Commit 9cc97d64 authored by chandan r's avatar chandan r Committed by Chris Mason
Browse files

Btrfs: Add code to support file creation time 



This patch adds a new member to the 'struct btrfs_inode' structure to hold
the file creation time.

Signed-off-by: default avatarchandan <chandanrmail@gmail.com>
[refreshed, removed btrfs_inode_otime]
Signed-off-by: default avatarDavid Sterba <dsterba@suse.cz>

Signed-off-by: default avatarChris Mason <clm@fb.com>
parent a937b979

fs/btrfs/btrfs_inode.h

+3 −0
Original line number Diff line number Diff line
@@ -185,6 +185,9 @@ struct btrfs_inode { 


	struct btrfs_delayed_node *delayed_node;



	/* File creation time. */

	struct timespec i_otime;



	struct inode vfs_inode;

};

fs/btrfs/delayed-inode.c

+10 −0
Original line number Diff line number Diff line
@@ -1769,6 +1769,11 @@ static void fill_stack_inode_item(struct btrfs_trans_handle *trans, 
				     inode->i_ctime.tv_sec);

	btrfs_set_stack_timespec_nsec(&inode_item->ctime,

				      inode->i_ctime.tv_nsec);



	btrfs_set_stack_timespec_sec(&inode_item->otime,

				     BTRFS_I(inode)->i_otime.tv_sec);

	btrfs_set_stack_timespec_nsec(&inode_item->otime,

				     BTRFS_I(inode)->i_otime.tv_nsec);

}



int btrfs_fill_inode(struct inode *inode, u32 *rdev)
@@ -1810,6 +1815,11 @@ int btrfs_fill_inode(struct inode *inode, u32 *rdev) 
	inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime);

	inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime);



	BTRFS_I(inode)->i_otime.tv_sec =

		btrfs_stack_timespec_sec(&inode_item->otime);

	BTRFS_I(inode)->i_otime.tv_nsec =

		btrfs_stack_timespec_nsec(&inode_item->otime);



	inode->i_generation = BTRFS_I(inode)->generation;

	BTRFS_I(inode)->index_cnt = (u64)-1;

fs/btrfs/inode.c

+23 −2
Original line number Diff line number Diff line
@@ -3535,6 +3535,11 @@ static void btrfs_read_locked_inode(struct inode *inode) 
	inode->i_ctime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->ctime);

	inode->i_ctime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->ctime);



	BTRFS_I(inode)->i_otime.tv_sec =

		btrfs_timespec_sec(leaf, &inode_item->otime);

	BTRFS_I(inode)->i_otime.tv_nsec =

		btrfs_timespec_nsec(leaf, &inode_item->otime);



	inode_set_bytes(inode, btrfs_inode_nbytes(leaf, inode_item));

	BTRFS_I(inode)->generation = btrfs_inode_generation(leaf, inode_item);

	BTRFS_I(inode)->last_trans = btrfs_inode_transid(leaf, inode_item);
@@ -3669,6 +3674,11 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, 
	btrfs_set_token_timespec_nsec(leaf, &item->ctime,

				      inode->i_ctime.tv_nsec, &token);



	btrfs_set_token_timespec_sec(leaf, &item->otime,

				     BTRFS_I(inode)->i_otime.tv_sec, &token);

	btrfs_set_token_timespec_nsec(leaf, &item->otime,

				      BTRFS_I(inode)->i_otime.tv_nsec, &token);



	btrfs_set_token_inode_nbytes(leaf, item, inode_get_bytes(inode),

				     &token);

	btrfs_set_token_inode_generation(leaf, item, BTRFS_I(inode)->generation,
@@ -5260,7 +5270,10 @@ static struct inode *new_simple_dir(struct super_block *s, 
	inode->i_op = &btrfs_dir_ro_inode_operations;

	inode->i_fop = &simple_dir_operations;

	inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;

	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;

	inode->i_mtime = CURRENT_TIME;

	inode->i_atime = inode->i_mtime;

	inode->i_ctime = inode->i_mtime;

	BTRFS_I(inode)->i_otime = inode->i_mtime;



	return inode;

}
@@ -5828,7 +5841,12 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, 


	inode_init_owner(inode, dir, mode);

	inode_set_bytes(inode, 0);

	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;



	inode->i_mtime = CURRENT_TIME;

	inode->i_atime = inode->i_mtime;

	inode->i_ctime = inode->i_mtime;

	BTRFS_I(inode)->i_otime = inode->i_mtime;



	inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],

				  struct btrfs_inode_item);

	memset_extent_buffer(path->nodes[0], 0, (unsigned long)inode_item,
@@ -8577,6 +8595,9 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) 


	ei->delayed_node = NULL;



	ei->i_otime.tv_sec = 0;

	ei->i_otime.tv_nsec = 0;



	inode = &ei->vfs_inode;

	extent_map_tree_init(&ei->extent_tree);

	extent_io_tree_init(&ei->io_tree, &inode->i_data);