This patch adds a new member to the 'struct btrfs_inode' structure to hold
the file creation time.
Signed-off-by: chandan <chandanrm...@gmail.com>
---
fs/btrfs/btrfs_inode.h | 3 +++
fs/btrfs/ctree.h | 8 ++++++++
fs/btrfs/delayed-inode.c | 10 +++++++++-
fs/btrfs/inode.c | 25 ++++++++++++++++++++++---
4 files changed, 42 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 12394a9..b761456 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -162,6 +162,9 @@ struct btrfs_inode {
struct btrfs_delayed_node *delayed_node;
+ /* File creation time. */
+ struct timespec i_otime;
+
struct inode vfs_inode;
};
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index fa5c45b..4ce172f 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1816,6 +1816,14 @@ btrfs_inode_ctime(struct btrfs_inode_item *inode_item)
return (struct btrfs_timespec *)ptr;
}
+static inline struct btrfs_timespec *
+btrfs_inode_otime(struct btrfs_inode_item *inode_item)
+{
+ unsigned long ptr = (unsigned long)inode_item;
+ ptr += offsetof(struct btrfs_inode_item, otime);
+ return (struct btrfs_timespec *)ptr;
+}
+
BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 21d91a8..63726967 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1742,6 +1742,11 @@ static void fill_stack_inode_item(struct
btrfs_trans_handle *trans,
inode->i_ctime.tv_sec);
btrfs_set_stack_timespec_nsec(btrfs_inode_ctime(inode_item),
inode->i_ctime.tv_nsec);
+
+ btrfs_set_stack_timespec_sec(btrfs_inode_otime(inode_item),
+ BTRFS_I(inode)->i_otime.tv_sec);
+ btrfs_set_stack_timespec_nsec(btrfs_inode_otime(inode_item),
+ BTRFS_I(inode)->i_otime.tv_nsec);
}
int btrfs_fill_inode(struct inode *inode, u32 *rdev)
@@ -1787,6 +1792,10 @@ int btrfs_fill_inode(struct inode *inode, u32 *rdev)
inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(tspec);
inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(tspec);
+ tspec = btrfs_inode_otime(inode_item);
+ BTRFS_I(inode)->i_otime.tv_sec = btrfs_stack_timespec_sec(tspec);
+ BTRFS_I(inode)->i_otime.tv_nsec = btrfs_stack_timespec_nsec(tspec);
+
inode->i_generation = BTRFS_I(inode)->generation;
BTRFS_I(inode)->index_cnt = (u64)-1;
@@ -1912,4 +1921,3 @@ void btrfs_destroy_delayed_inodes(struct btrfs_root *root)
btrfs_release_delayed_node(prev_node);
}
}
-
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0d507e6..145a2ed 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2581,6 +2581,10 @@ static void btrfs_read_locked_inode(struct inode *inode)
inode->i_ctime.tv_sec = btrfs_timespec_sec(leaf, tspec);
inode->i_ctime.tv_nsec = btrfs_timespec_nsec(leaf, tspec);
+ tspec = btrfs_inode_otime(inode_item);
+ BTRFS_I(inode)->i_otime.tv_sec = btrfs_timespec_sec(leaf, tspec);
+ BTRFS_I(inode)->i_otime.tv_nsec = btrfs_timespec_nsec(leaf, tspec);
+
inode_set_bytes(inode, btrfs_inode_nbytes(leaf, inode_item));
BTRFS_I(inode)->generation = btrfs_inode_generation(leaf, inode_item);
inode->i_version = btrfs_inode_sequence(leaf, inode_item);
@@ -2665,6 +2669,11 @@ static void fill_inode_item(struct btrfs_trans_handle
*trans,
btrfs_set_timespec_nsec(leaf, btrfs_inode_ctime(item),
inode->i_ctime.tv_nsec);
+ btrfs_set_timespec_sec(leaf, btrfs_inode_otime(item),
+ BTRFS_I(inode)->i_otime.tv_sec);
+ btrfs_set_timespec_nsec(leaf, btrfs_inode_otime(item),
+ BTRFS_I(inode)->i_otime.tv_nsec);
+
btrfs_set_inode_nbytes(leaf, item, inode_get_bytes(inode));
btrfs_set_inode_generation(leaf, item, BTRFS_I(inode)->generation);
btrfs_set_inode_sequence(leaf, item, inode->i_version);
@@ -2846,7 +2855,7 @@ int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
}
return ret;
}
-
+
/* helper to check if there is any shared block in the path */
static int check_path_shared(struct btrfs_root *root,
@@ -4151,7 +4160,11 @@ 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;
+ BTRFS_I(inode)->i_otime
+ = inode->i_mtime
+ = inode->i_atime
+ = inode->i_ctime
+ = CURRENT_TIME;
return inode;
}
@@ -4687,7 +4700,11 @@ 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;
+ BTRFS_I(inode)->i_otime
+ = inode->i_mtime
+ = inode->i_atime
+ = inode->i_ctime
+ = CURRENT_TIME;
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
fill_inode_item(trans, path->nodes[0], inode_item, inode);
@@ -6960,6 +6977,8 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
ei->delayed_node = NULL;
+ ei->i_otime.tv_sec = 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);
--
1.7.11
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
