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Subject[PATCH 05/32] GFS2: move function foreach_leaf to gfs2_dir_exhash_dealloc
Date
From: Bob Peterson <rpeterso@redhat.com>

The previous patches made function gfs2_dir_exhash_dealloc do nothing
but call function foreach_leaf. This patch simplifies the code by
moving the entire function foreach_leaf into gfs2_dir_exhash_dealloc.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 1f5a7ac..f7a3137 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -85,10 +85,6 @@ struct qstr gfs2_qdotdot __read_mostly;
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, struct buffer_head *leaf_bh,
- int last_dealloc);
-
int gfs2_dir_get_new_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head **bhp)
{
@@ -1769,81 +1765,6 @@ 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
- *
- * Returns: errno
- */
-
-static int foreach_leaf(struct gfs2_inode *dip)
-{
- struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
- struct buffer_head *bh;
- struct gfs2_leaf *leaf;
- u32 hsize, len;
- u32 ht_offset, lp_offset, ht_offset_cur = -1;
- u32 index = 0, next_index;
- __be64 *lp;
- u64 leaf_no;
- int error = 0, last;
-
- hsize = 1 << dip->i_depth;
- if (hsize * sizeof(u64) != i_size_read(&dip->i_inode)) {
- gfs2_consist_inode(dip);
- return -EIO;
- }
-
- lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS);
- if (!lp)
- return -ENOMEM;
-
- while (index < hsize) {
- lp_offset = index & (sdp->sd_hash_ptrs - 1);
- ht_offset = index - lp_offset;
-
- if (ht_offset_cur != ht_offset) {
- error = gfs2_dir_read_data(dip, (char *)lp,
- ht_offset * sizeof(__be64),
- sdp->sd_hash_bsize, 1);
- if (error != sdp->sd_hash_bsize) {
- if (error >= 0)
- error = -EIO;
- goto out;
- }
- ht_offset_cur = ht_offset;
- }
-
- leaf_no = be64_to_cpu(lp[lp_offset]);
- if (leaf_no) {
- error = get_leaf(dip, leaf_no, &bh);
- if (error)
- goto out;
- leaf = (struct gfs2_leaf *)bh->b_data;
- len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth));
- next_index = (index & ~(len - 1)) + len;
- last = ((next_index >= hsize) ? 1 : 0);
- error = leaf_dealloc(dip, index, len, leaf_no, bh,
- last);
- brelse(bh);
- if (error)
- goto out;
- index = next_index;
- } else
- index++;
- }
-
- if (index != hsize) {
- gfs2_consist_inode(dip);
- error = -EIO;
- }
-
-out:
- kfree(lp);
-
- return error;
-}
-
-/**
* leaf_dealloc - Deallocate a directory leaf
* @dip: the directory
* @index: the hash table offset in the directory
@@ -1988,8 +1909,71 @@ out:

int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip)
{
- /* Dealloc on-disk leaves to FREEMETA state */
- return foreach_leaf(dip);
+ struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
+ struct buffer_head *bh;
+ struct gfs2_leaf *leaf;
+ u32 hsize, len;
+ u32 ht_offset, lp_offset, ht_offset_cur = -1;
+ u32 index = 0, next_index;
+ __be64 *lp;
+ u64 leaf_no;
+ int error = 0, last;
+
+ hsize = 1 << dip->i_depth;
+ if (hsize * sizeof(u64) != i_size_read(&dip->i_inode)) {
+ gfs2_consist_inode(dip);
+ return -EIO;
+ }
+
+ lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS);
+ if (!lp)
+ return -ENOMEM;
+
+ while (index < hsize) {
+ lp_offset = index & (sdp->sd_hash_ptrs - 1);
+ ht_offset = index - lp_offset;
+
+ if (ht_offset_cur != ht_offset) {
+ error = gfs2_dir_read_data(dip, (char *)lp,
+ ht_offset * sizeof(__be64),
+ sdp->sd_hash_bsize, 1);
+ if (error != sdp->sd_hash_bsize) {
+ if (error >= 0)
+ error = -EIO;
+ goto out;
+ }
+ ht_offset_cur = ht_offset;
+ }
+
+ leaf_no = be64_to_cpu(lp[lp_offset]);
+ if (leaf_no) {
+ error = get_leaf(dip, leaf_no, &bh);
+ if (error)
+ goto out;
+ leaf = (struct gfs2_leaf *)bh->b_data;
+ len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth));
+
+ next_index = (index & ~(len - 1)) + len;
+ last = ((next_index >= hsize) ? 1 : 0);
+ error = leaf_dealloc(dip, index, len, leaf_no, bh,
+ last);
+ brelse(bh);
+ if (error)
+ goto out;
+ index = next_index;
+ } else
+ index++;
+ }
+
+ if (index != hsize) {
+ gfs2_consist_inode(dip);
+ error = -EIO;
+ }
+
+out:
+ kfree(lp);
+
+ return error;
}

/**
--
1.7.4


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