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GFS2: move function foreach_leaf to gfs2_dir_exhash_dealloc 

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>
This commit is contained in:
Bob Peterson 2011-03-22 13:56:37 -04:00 committed by Steven Whitehouse
parent ec038c826b
commit 556bb17998
1 changed files with 65 additions and 81 deletions
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146
fs/gfs2/dir.c
View File

@ -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)
{
@ -1768,81 +1764,6 @@ int gfs2_dir_mvino(struct gfs2_inode *dip, const struct qstr *filename,
return 0;
}
/**
* 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
@ -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;
}
/**