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Diffstat (limited to 'fs/gfs2/dir.c')
-rw-r--r--fs/gfs2/dir.c56
1 files changed, 26 insertions, 30 deletions
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index 7390286..40e94ac 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -106,7 +106,7 @@ static int gfs2_dir_get_existing_buffer(struct gfs2_inode *ip, u64 block,
struct buffer_head *bh;
int error;
- error = gfs2_meta_read(ip->i_gl, block, DIO_START | DIO_WAIT, &bh);
+ error = gfs2_meta_read(ip->i_gl, block, DIO_WAIT, &bh);
if (error)
return error;
if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_JD)) {
@@ -246,7 +246,7 @@ fail:
}
static int gfs2_dir_read_stuffed(struct gfs2_inode *ip, char *buf,
- unsigned int offset, unsigned int size)
+ u64 offset, unsigned int size)
{
struct buffer_head *dibh;
int error;
@@ -271,8 +271,8 @@ static int gfs2_dir_read_stuffed(struct gfs2_inode *ip, char *buf,
*
* Returns: The amount of data actually copied or the error
*/
-static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf,
- u64 offset, unsigned int size)
+static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf, u64 offset,
+ unsigned int size, unsigned ra)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
u64 lblock, dblock;
@@ -291,8 +291,7 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf,
return 0;
if (gfs2_is_stuffed(ip))
- return gfs2_dir_read_stuffed(ip, buf, (unsigned int)offset,
- size);
+ return gfs2_dir_read_stuffed(ip, buf, offset, size);
if (gfs2_assert_warn(sdp, gfs2_is_jdata(ip)))
return -EINVAL;
@@ -313,34 +312,31 @@ static int gfs2_dir_read_data(struct gfs2_inode *ip, char *buf,
new = 0;
error = gfs2_extent_map(&ip->i_inode, lblock, &new,
&dblock, &extlen);
- if (error)
+ if (error || !dblock)
goto fail;
+ BUG_ON(extlen < 1);
+ if (!ra)
+ extlen = 1;
+ bh = gfs2_meta_ra(ip->i_gl, dblock, extlen);
}
-
- if (extlen > 1)
- gfs2_meta_ra(ip->i_gl, dblock, extlen);
-
- if (dblock) {
- if (new)
- error = gfs2_dir_get_new_buffer(ip, dblock, &bh);
- else
- error = gfs2_dir_get_existing_buffer(ip, dblock, &bh);
+ if (!bh) {
+ error = gfs2_meta_read(ip->i_gl, dblock, DIO_WAIT, &bh);
if (error)
goto fail;
- dblock++;
- extlen--;
- } else
- bh = NULL;
-
+ }
+ error = gfs2_metatype_check(sdp, bh, GFS2_METATYPE_JD);
+ if (error) {
+ brelse(bh);
+ goto fail;
+ }
+ dblock++;
+ extlen--;
memcpy(buf, bh->b_data + o, amount);
brelse(bh);
- if (error)
- goto fail;
-
+ bh = NULL;
buf += amount;
copied += amount;
lblock++;
-
o = sizeof(struct gfs2_meta_header);
}
@@ -701,7 +697,7 @@ static int get_leaf(struct gfs2_inode *dip, u64 leaf_no,
{
int error;
- error = gfs2_meta_read(dip->i_gl, leaf_no, DIO_START | DIO_WAIT, bhp);
+ error = gfs2_meta_read(dip->i_gl, leaf_no, DIO_WAIT, bhp);
if (!error && gfs2_metatype_check(GFS2_SB(&dip->i_inode), *bhp, GFS2_METATYPE_LF)) {
/* printk(KERN_INFO "block num=%llu\n", leaf_no); */
error = -EIO;
@@ -727,7 +723,7 @@ static int get_leaf_nr(struct gfs2_inode *dip, u32 index,
error = gfs2_dir_read_data(dip, (char *)&leaf_no,
index * sizeof(u64),
- sizeof(u64));
+ sizeof(u64), 0);
if (error != sizeof(u64))
return (error < 0) ? error : -EIO;
@@ -1095,7 +1091,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
for (block = dip->i_di.di_size >> sdp->sd_hash_bsize_shift; block--;) {
error = gfs2_dir_read_data(dip, (char *)buf,
block * sdp->sd_hash_bsize,
- sdp->sd_hash_bsize);
+ sdp->sd_hash_bsize, 1);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
error = -EIO;
@@ -1375,7 +1371,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
ht_offset * sizeof(u64),
- sdp->sd_hash_bsize);
+ sdp->sd_hash_bsize, 1);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
error = -EIO;
@@ -1745,7 +1741,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
if (ht_offset_cur != ht_offset) {
error = gfs2_dir_read_data(dip, (char *)lp,
ht_offset * sizeof(u64),
- sdp->sd_hash_bsize);
+ sdp->sd_hash_bsize, 1);
if (error != sdp->sd_hash_bsize) {
if (error >= 0)
error = -EIO;
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