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btrfs: drop create parameter to btrfs_get_extent()

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We only pass this as 1 from __extent_writepage_io(). The parameter
basically means "pretend I didn't pass in a page". This is silly since
we can simply not pass in the page. Get rid of the parameter from
btrfs_get_extent(), and since it's used as a get_extent_t callback,
remove it from get_extent_t and btree_get_extent(), neither of which
need it.

While we're here, let's document btrfs_get_extent().

Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Omar Sandoval 2019-12-02 17:34:23 -08:00 • committed by David Sterba
parent f95d713b54
commit 39b07b5d70
9 changed files with 64 additions and 62 deletions
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4
fs/btrfs/disk-io.c
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@ -202,8 +202,8 @@ void btrfs_set_buffer_lockdep_class(u64 objectid, struct extent_buffer *eb,
* that covers the entire device
*/
struct extent_map *btree_get_extent(struct btrfs_inode *inode,
struct page *page, size_t pg_offset, u64 start, u64 len,
int create)
struct page *page, size_t pg_offset,
u64 start, u64 len)
{
struct extent_map_tree *em_tree = &inode->extent_tree;
struct extent_map *em;