Internally, btrfs_header_fsid() calculates an unsigned long, but casts
it to a pointer, while all callers cast it to unsigned long again.
Committed to btrfs as fba6aa75654394fccf2530041e9451414c28084f
Signed-off-by: Ross Kirk <ross.k...@gmail.com>
---
cmds-chunk.c | 6 ++----
ctree.c | 18 ++++++------------
ctree.h | 5 ++---
disk-io.c | 3 +--
print-tree.c | 2 +-
5 files changed, 12 insertions(+), 22 deletions(-)
diff --git a/cmds-chunk.c b/cmds-chunk.c
index 03314de..a89b929 100644
--- a/cmds-chunk.c
+++ b/cmds-chunk.c
@@ -742,8 +742,7 @@ static int scan_one_device(struct recover_control *rc, int
fd,
rc->leafsize)
break;
- if (memcmp_extent_buffer(buf, rc->fs_devices->fsid,
- (unsigned long)btrfs_header_fsid(buf),
+ if (memcmp_extent_buffer(buf, rc->fs_devices->fsid,
btrfs_header_fsid(buf),
BTRFS_FSID_SIZE)) {
bytenr += rc->sectorsize;
continue;
@@ -1043,8 +1042,7 @@ static int __rebuild_chunk_root(struct btrfs_trans_handle
*trans,
btrfs_set_header_level(cow, 0);
btrfs_set_header_backref_rev(cow, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(cow, BTRFS_CHUNK_TREE_OBJECTID);
- write_extent_buffer(cow, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(cow),
+ write_extent_buffer(cow, root->fs_info->fsid, btrfs_header_fsid(cow),
BTRFS_FSID_SIZE);
write_extent_buffer(cow, root->fs_info->chunk_tree_uuid,
diff --git a/ctree.c b/ctree.c
index 1a4f3f0..4e9a47f 100644
--- a/ctree.c
+++ b/ctree.c
@@ -121,8 +121,7 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
else
btrfs_set_header_owner(cow, new_root_objectid);
- write_extent_buffer(cow, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(cow),
+ write_extent_buffer(cow, root->fs_info->fsid, btrfs_header_fsid(cow),
BTRFS_FSID_SIZE);
WARN_ON(btrfs_header_generation(buf) > trans->transid);
@@ -168,8 +167,7 @@ init:
btrfs_set_header_backref_rev(c, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(c, root->root_key.objectid);
- write_extent_buffer(c, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(c),
+ write_extent_buffer(c, root->fs_info->fsid, btrfs_header_fsid(c),
BTRFS_FSID_SIZE);
write_extent_buffer(c, root->fs_info->chunk_tree_uuid,
@@ -342,8 +340,7 @@ int __btrfs_cow_block(struct btrfs_trans_handle *trans,
else
btrfs_set_header_owner(cow, root->root_key.objectid);
- write_extent_buffer(cow, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(cow),
+ write_extent_buffer(cow, root->fs_info->fsid, btrfs_header_fsid(cow),
BTRFS_FSID_SIZE);
WARN_ON(btrfs_header_generation(buf) > trans->transid);
@@ -1528,8 +1525,7 @@ static int noinline insert_new_root(struct
btrfs_trans_handle *trans,
btrfs_set_header_backref_rev(c, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(c, root->root_key.objectid);
- write_extent_buffer(c, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(c),
+ write_extent_buffer(c, root->fs_info->fsid, btrfs_header_fsid(c),
BTRFS_FSID_SIZE);
write_extent_buffer(c, root->fs_info->chunk_tree_uuid,
@@ -1649,8 +1645,7 @@ static int split_node(struct btrfs_trans_handle *trans,
struct btrfs_root
btrfs_set_header_generation(split, trans->transid);
btrfs_set_header_backref_rev(split, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(split, root->root_key.objectid);
- write_extent_buffer(split, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(split),
+ write_extent_buffer(split, root->fs_info->fsid,
btrfs_header_fsid(split),
BTRFS_FSID_SIZE);
write_extent_buffer(split, root->fs_info->chunk_tree_uuid,
(unsigned long)btrfs_header_chunk_tree_uuid(split),
@@ -2210,8 +2205,7 @@ again:
btrfs_set_header_backref_rev(right, BTRFS_MIXED_BACKREF_REV);
btrfs_set_header_owner(right, root->root_key.objectid);
btrfs_set_header_level(right, 0);
- write_extent_buffer(right, root->fs_info->fsid,
- (unsigned long)btrfs_header_fsid(right),
+ write_extent_buffer(right, root->fs_info->fsid,
btrfs_header_fsid(right),
BTRFS_FSID_SIZE);
write_extent_buffer(right, root->fs_info->chunk_tree_uuid,
diff --git a/ctree.h b/ctree.h
index 0b0d701..6a711c6 100644
--- a/ctree.h
+++ b/ctree.h
@@ -1748,10 +1748,9 @@ static inline void btrfs_set_header_backref_rev(struct
extent_buffer *eb,
btrfs_set_header_flags(eb, flags);
}
-static inline u8 *btrfs_header_fsid(struct extent_buffer *eb)
+static inline unsigned long btrfs_header_fsid(struct extent_buffer *eb)
{
- unsigned long ptr = offsetof(struct btrfs_header, fsid);
- return (u8 *)ptr;
+ return offsetof(struct btrfs_header, fsid);
}
static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb)
diff --git a/disk-io.c b/disk-io.c
index 13dbe27..58f699e 100644
--- a/disk-io.c
+++ b/disk-io.c
@@ -49,8 +49,7 @@ static int check_tree_block(struct btrfs_root *root, struct
extent_buffer *buf)
fs_devices = root->fs_info->fs_devices;
while (fs_devices) {
- if (!memcmp_extent_buffer(buf, fs_devices->fsid,
- (unsigned long)btrfs_header_fsid(buf),
+ if (!memcmp_extent_buffer(buf, fs_devices->fsid,
btrfs_header_fsid(buf),
BTRFS_FSID_SIZE)) {
ret = 0;
break;
diff --git a/print-tree.c b/print-tree.c
index aae47a9..5027b73 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -153,7 +153,7 @@ static void print_uuids(struct extent_buffer *eb)
char chunk_uuid[37];
u8 disk_uuid[BTRFS_UUID_SIZE];
- read_extent_buffer(eb, disk_uuid, (unsigned long)btrfs_header_fsid(eb),
+ read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(eb),
BTRFS_FSID_SIZE);
fs_uuid[36] = '\0';
--
1.7.7.6
--
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
