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JFS: Code cleanup - getting rid of never-used debug code

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I'm finally getting around to cleaning out debug code that I've never used.
There has always been code ifdef'ed out by _JFS_DEBUG_DMAP, _JFS_DEBUG_IMAP,
_JFS_DEBUG_DTREE, and _JFS_DEBUG_XTREE, which I have personally never used,
and I doubt that anyone has since the design stage back in OS/2.  There is
also a function, xtGather, that has never been used, and I don't know why it
was ever there.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
This commit is contained in:
Dave Kleikamp
2005-06-27 15:35:37 -05:00
parent f5f287738b
commit b38a3ab3d1
6 changed files with 8 additions and 947 deletions
Download Patch File Download Diff File Expand all files Collapse all files

298
fs/jfs/jfs_dmap.c
View File

@@ -25,36 +25,6 @@
#include "jfs_metapage.h"
#include "jfs_debug.h"
/*
* Debug code for double-checking block map
*/
/* #define _JFS_DEBUG_DMAP 1 */
#ifdef _JFS_DEBUG_DMAP
#define DBINITMAP(size,ipbmap,results) \
DBinitmap(size,ipbmap,results)
#define DBALLOC(dbmap,mapsize,blkno,nblocks) \
DBAlloc(dbmap,mapsize,blkno,nblocks)
#define DBFREE(dbmap,mapsize,blkno,nblocks) \
DBFree(dbmap,mapsize,blkno,nblocks)
#define DBALLOCCK(dbmap,mapsize,blkno,nblocks) \
DBAllocCK(dbmap,mapsize,blkno,nblocks)
#define DBFREECK(dbmap,mapsize,blkno,nblocks) \
DBFreeCK(dbmap,mapsize,blkno,nblocks)
static void DBinitmap(s64, struct inode *, u32 **);
static void DBAlloc(uint *, s64, s64, s64);
static void DBFree(uint *, s64, s64, s64);
static void DBAllocCK(uint *, s64, s64, s64);
static void DBFreeCK(uint *, s64, s64, s64);
#else
#define DBINITMAP(size,ipbmap,results)
#define DBALLOC(dbmap, mapsize, blkno, nblocks)
#define DBFREE(dbmap, mapsize, blkno, nblocks)
#define DBALLOCCK(dbmap, mapsize, blkno, nblocks)
#define DBFREECK(dbmap, mapsize, blkno, nblocks)
#endif /* _JFS_DEBUG_DMAP */
/*
* SERIALIZATION of the Block Allocation Map.
*
@@ -242,7 +212,6 @@ int dbMount(struct inode *ipbmap)
JFS_SBI(ipbmap->i_sb)->bmap = bmp;
memset(bmp->db_active, 0, sizeof(bmp->db_active));
DBINITMAP(bmp->db_mapsize, ipbmap, &bmp->db_DBmap);
/*
* allocate/initialize the bmap lock
@@ -407,16 +376,12 @@ int dbFree(struct inode *ip, s64 blkno, s64 nblocks)
*/
nb = min(rem, BPERDMAP - (blkno & (BPERDMAP - 1)));
DBALLOCCK(bmp->db_DBmap, bmp->db_mapsize, blkno, nb);
/* free the blocks. */
if ((rc = dbFreeDmap(bmp, dp, blkno, nb))) {
release_metapage(mp);
IREAD_UNLOCK(ipbmap);
return (rc);
}
DBFREE(bmp->db_DBmap, bmp->db_mapsize, blkno, nb);
}
/* write the last buffer. */
@@ -775,10 +740,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
IWRITE_LOCK(ipbmap);
rc = dbAllocAny(bmp, nblocks, l2nb, results);
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize, *results,
nblocks);
}
goto write_unlock;
}
@@ -836,8 +797,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
!= -ENOSPC) {
if (rc == 0) {
*results = blkno;
DBALLOC(bmp->db_DBmap, bmp->db_mapsize,
*results, nblocks);
mark_metapage_dirty(mp);
}
@@ -863,11 +822,8 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
if ((rc =
dbAllocNear(bmp, dp, blkno, (int) nblocks, l2nb, results))
!= -ENOSPC) {
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize,
*results, nblocks);
if (rc == 0)
mark_metapage_dirty(mp);
}
release_metapage(mp);
goto read_unlock;
@@ -878,11 +834,8 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
*/
if ((rc = dbAllocDmapLev(bmp, dp, (int) nblocks, l2nb, results))
!= -ENOSPC) {
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize,
*results, nblocks);
if (rc == 0)
mark_metapage_dirty(mp);
}
release_metapage(mp);
goto read_unlock;
@@ -896,13 +849,9 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
* the same allocation group as the hint.
*/
IWRITE_LOCK(ipbmap);
if ((rc = dbAllocAG(bmp, agno, nblocks, l2nb, results))
!= -ENOSPC) {
if (rc == 0)
DBALLOC(bmp->db_DBmap, bmp->db_mapsize,
*results, nblocks);
if ((rc = dbAllocAG(bmp, agno, nblocks, l2nb, results)) != -ENOSPC)
goto write_unlock;
}
IWRITE_UNLOCK(ipbmap);
@@ -918,9 +867,6 @@ int dbAlloc(struct inode *ip, s64 hint, s64 nblocks, s64 * results)
*/
if ((rc = dbAllocAG(bmp, agno, nblocks, l2nb, results)) == -ENOSPC)
rc = dbAllocAny(bmp, nblocks, l2nb, results);
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize, *results, nblocks);
}
write_unlock:
IWRITE_UNLOCK(ipbmap);
@@ -992,10 +938,9 @@ int dbAllocExact(struct inode *ip, s64 blkno, int nblocks)
IREAD_UNLOCK(ipbmap);
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize, blkno, nblocks);
if (rc == 0)
mark_metapage_dirty(mp);
}
release_metapage(mp);
return (rc);
@@ -1144,7 +1089,6 @@ static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
return -EIO;
}
DBALLOCCK(bmp->db_DBmap, bmp->db_mapsize, blkno, nblocks);
dp = (struct dmap *) mp->data;
/* try to allocate the blocks immediately following the
@@ -1155,11 +1099,9 @@ static int dbExtend(struct inode *ip, s64 blkno, s64 nblocks, s64 addnblocks)
IREAD_UNLOCK(ipbmap);
/* were we successful ? */
if (rc == 0) {
DBALLOC(bmp->db_DBmap, bmp->db_mapsize, extblkno,
addnblocks);
if (rc == 0)
write_metapage(mp);
} else
else
/* we were not successful */
release_metapage(mp);
@@ -3185,16 +3127,12 @@ int dbAllocBottomUp(struct inode *ip, s64 blkno, s64 nblocks)
*/
nb = min(rem, BPERDMAP - (blkno & (BPERDMAP - 1)));
DBFREECK(bmp->db_DBmap, bmp->db_mapsize, blkno, nb);
/* allocate the blocks. */
if ((rc = dbAllocDmapBU(bmp, dp, blkno, nb))) {
release_metapage(mp);
IREAD_UNLOCK(ipbmap);
return (rc);
}
DBALLOC(bmp->db_DBmap, bmp->db_mapsize, blkno, nb);
}
/* write the last buffer. */
@@ -4041,223 +3979,3 @@ s64 dbMapFileSizeToMapSize(struct inode * ipbmap)
return (nblocks);
}
#ifdef _JFS_DEBUG_DMAP
/*
* DBinitmap()
*/
static void DBinitmap(s64 size, struct inode *ipbmap, u32 ** results)
{
int npages;
u32 *dbmap, *d;
int n;
s64 lblkno, cur_block;
struct dmap *dp;
struct metapage *mp;
npages = size / 32768;
npages += (size % 32768) ? 1 : 0;
dbmap = (u32 *) xmalloc(npages * 4096, L2PSIZE, kernel_heap);
if (dbmap == NULL)
BUG(); /* Not robust since this is only unused debug code */
for (n = 0, d = dbmap; n < npages; n++, d += 1024)
bzero(d, 4096);
/* Need to initialize from disk map pages
*/
for (d = dbmap, cur_block = 0; cur_block < size;
cur_block += BPERDMAP, d += LPERDMAP) {
lblkno = BLKTODMAP(cur_block,
JFS_SBI(ipbmap->i_sb)->bmap->
db_l2nbperpage);
mp = read_metapage(ipbmap, lblkno, PSIZE, 0);
if (mp == NULL) {
jfs_error(ipbmap->i_sb,
"DBinitmap: could not read disk map page");
continue;
}
dp = (struct dmap *) mp->data;
for (n = 0; n < LPERDMAP; n++)
d[n] = le32_to_cpu(dp->wmap[n]);
release_metapage(mp);
}
*results = dbmap;
}
/*
* DBAlloc()
*/
void DBAlloc(uint * dbmap, s64 mapsize, s64 blkno, s64 nblocks)
{
int word, nb, bitno;
u32 mask;
assert(blkno > 0 && blkno < mapsize);
assert(nblocks > 0 && nblocks <= mapsize);
assert(blkno + nblocks <= mapsize);
dbmap += (blkno / 32);
while (nblocks > 0) {
bitno = blkno & (32 - 1);
nb = min(nblocks, 32 - bitno);
mask = (0xffffffff << (32 - nb) >> bitno);
assert((mask & *dbmap) == 0);
*dbmap |= mask;
dbmap++;
blkno += nb;
nblocks -= nb;
}
}
/*
* DBFree()
*/
static void DBFree(uint * dbmap, s64 mapsize, s64 blkno, s64 nblocks)
{
int word, nb, bitno;
u32 mask;
assert(blkno > 0 && blkno < mapsize);
assert(nblocks > 0 && nblocks <= mapsize);
assert(blkno + nblocks <= mapsize);
dbmap += (blkno / 32);
while (nblocks > 0) {
bitno = blkno & (32 - 1);
nb = min(nblocks, 32 - bitno);
mask = (0xffffffff << (32 - nb) >> bitno);
assert((mask & *dbmap) == mask);
*dbmap &= ~mask;
dbmap++;
blkno += nb;
nblocks -= nb;
}
}
/*
* DBAllocCK()
*/
static void DBAllocCK(uint * dbmap, s64 mapsize, s64 blkno, s64 nblocks)
{
int word, nb, bitno;
u32 mask;
assert(blkno > 0 && blkno < mapsize);
assert(nblocks > 0 && nblocks <= mapsize);
assert(blkno + nblocks <= mapsize);
dbmap += (blkno / 32);
while (nblocks > 0) {
bitno = blkno & (32 - 1);
nb = min(nblocks, 32 - bitno);
mask = (0xffffffff << (32 - nb) >> bitno);
assert((mask & *dbmap) == mask);
dbmap++;
blkno += nb;
nblocks -= nb;
}
}
/*
* DBFreeCK()
*/
static void DBFreeCK(uint * dbmap, s64 mapsize, s64 blkno, s64 nblocks)
{
int word, nb, bitno;
u32 mask;
assert(blkno > 0 && blkno < mapsize);
assert(nblocks > 0 && nblocks <= mapsize);
assert(blkno + nblocks <= mapsize);
dbmap += (blkno / 32);
while (nblocks > 0) {
bitno = blkno & (32 - 1);
nb = min(nblocks, 32 - bitno);
mask = (0xffffffff << (32 - nb) >> bitno);
assert((mask & *dbmap) == 0);
dbmap++;
blkno += nb;
nblocks -= nb;
}
}
/*
* dbPrtMap()
*/
static void dbPrtMap(struct bmap * bmp)
{
printk(" mapsize: %d%d\n", bmp->db_mapsize);
printk(" nfree: %d%d\n", bmp->db_nfree);
printk(" numag: %d\n", bmp->db_numag);
printk(" agsize: %d%d\n", bmp->db_agsize);
printk(" agl2size: %d\n", bmp->db_agl2size);
printk(" agwidth: %d\n", bmp->db_agwidth);
printk(" agstart: %d\n", bmp->db_agstart);
printk(" agheigth: %d\n", bmp->db_agheigth);
printk(" aglevel: %d\n", bmp->db_aglevel);
printk(" maxlevel: %d\n", bmp->db_maxlevel);
printk(" maxag: %d\n", bmp->db_maxag);
printk(" agpref: %d\n", bmp->db_agpref);
printk(" l2nbppg: %d\n", bmp->db_l2nbperpage);
}
/*
* dbPrtCtl()
*/
static void dbPrtCtl(struct dmapctl * dcp)
{
int i, j, n;
printk(" height: %08x\n", le32_to_cpu(dcp->height));
printk(" leafidx: %08x\n", le32_to_cpu(dcp->leafidx));
printk(" budmin: %08x\n", dcp->budmin);
printk(" nleafs: %08x\n", le32_to_cpu(dcp->nleafs));
printk(" l2nleafs: %08x\n", le32_to_cpu(dcp->l2nleafs));
printk("\n Tree:\n");
for (i = 0; i < CTLLEAFIND; i += 8) {
n = min(8, CTLLEAFIND - i);
for (j = 0; j < n; j++)
printf(" [%03x]: %02x", i + j,
(char) dcp->stree[i + j]);
printf("\n");
}
printk("\n Tree Leaves:\n");
for (i = 0; i < LPERCTL; i += 8) {
n = min(8, LPERCTL - i);
for (j = 0; j < n; j++)
printf(" [%03x]: %02x",
i + j,
(char) dcp->stree[i + j + CTLLEAFIND]);
printf("\n");
}
}
#endif /* _JFS_DEBUG_DMAP */