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| author | Filipe Manana | 2014-02-25 15:15:12 +0100 |
|---|---|---|
| committer | Josef Bacik | 2014-03-10 20:16:56 +0100 |
| commit | cbc0e9287d710ce7dce5f8daf667729e83316c45 (patch) | |
| tree | abd3c0c847c07464186b86afb9cea66473f024ed /fs/btrfs/extent_io.c | |
| parent | Btrfs: skip locking when searching commit root (diff) | |
| download | kernel-qcow2-linux-cbc0e9287d710ce7dce5f8daf667729e83316c45.tar.gz kernel-qcow2-linux-cbc0e9287d710ce7dce5f8daf667729e83316c45.tar.xz kernel-qcow2-linux-cbc0e9287d710ce7dce5f8daf667729e83316c45.zip | |
Btrfs: remove unneeded field / smaller extent_map structure
We don't need to have an unsigned int field in the extent_map struct
to tell us whether the extent map is in the inode's extent_map tree or
not. We can use the rb_node struct field and the RB_CLEAR_NODE and
RB_EMPTY_NODE macros to achieve the same task.
This reduces sizeof(struct extent_map) from 152 bytes to 144 bytes (on a
64 bits system).
Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
| -rw-r--r-- | fs/btrfs/extent_io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index fbe501d3bd01..2c9fbe3b6eec 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2763,7 +2763,7 @@ __get_extent_map(struct inode *inode, struct page *page, size_t pg_offset, if (em_cached && *em_cached) { em = *em_cached; - if (em->in_tree && start >= em->start && + if (extent_map_in_tree(em) && start >= em->start && start < extent_map_end(em)) { atomic_inc(&em->refs); return em; |