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Old 03-22-2011, 04:52 PM
Bob Peterson
 
Default gfs2: remove *leaf_call_t and simplify leaf_dealloc

Hi,

Since foreach_leaf is only called with leaf_dealloc as its only possible
call function, we can simplify the code by making it call leaf_dealloc
directly. This simplifies the code and eliminates the need for
leaf_call_t, the generic call method. This is a first small step in
simplifying the directory leaf deallocation code.

Regards,

Bob Peterson
Red Hat File Systems

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
--
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 5c356d0..10a4bbe 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -82,11 +82,11 @@
struct qstr gfs2_qdot __read_mostly;
struct qstr gfs2_qdotdot __read_mostly;

-typedef int (*leaf_call_t) (struct gfs2_inode *dip, u32 index, u32 len,
- u64 leaf_no, void *data);
typedef int (*gfs2_dscan_t)(const struct gfs2_dirent *dent,
const struct qstr *name, void *opaque);

+static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
+ u64 leaf_no);

int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head **bhp)
@@ -1770,13 +1770,11 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
/**
* foreach_leaf - call a function for each leaf in a directory
* @dip: the directory
- * @lc: the function to call for each each
- * @data: private data to pass to it
*
* Returns: errno
*/

-static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
+static int foreach_leaf(struct gfs2_inode *dip)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct buffer_head *bh;
@@ -1823,7 +1821,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth));
brelse(bh);

- error = lc(dip, index, len, leaf_no, data);
+ error = leaf_dealloc(dip, index, len, leaf_no);
if (error)
goto out;

@@ -1855,7 +1853,7 @@ out:
*/

static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
- u64 leaf_no, void *data)
+ u64 leaf_no)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_leaf *tmp_leaf;
@@ -1978,7 +1976,7 @@ int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip)
int error;

/* Dealloc on-disk leaves to FREEMETA state */
- error = foreach_leaf(dip, leaf_dealloc, NULL);
+ error = foreach_leaf(dip);
if (error)
return error;
 

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