diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index 97c66f9..4dcc058 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -284,11 +284,11 @@
 			release_metapage(*mp);
 			*mp = NULL;
 		}
-		if (*mp == 0) {
+		if (!(*mp)) {
 			*lblock = blkno;
 			*mp = read_index_page(ip, blkno);
 		}
-		if (*mp == 0) {
+		if (!(*mp)) {
 			jfs_err("free_index: error reading directory table");
 			return NULL;
 		}
@@ -413,7 +413,8 @@
 		}
 		ip->i_size = PSIZE;
 
-		if ((mp = get_index_page(ip, 0)) == 0) {
+		mp = get_index_page(ip, 0);
+		if (!mp) {
 			jfs_err("add_index: get_metapage failed!");
 			xtTruncate(tid, ip, 0, COMMIT_PWMAP);
 			memcpy(&jfs_ip->i_dirtable, temp_table,
@@ -461,7 +462,7 @@
 	} else
 		mp = read_index_page(ip, blkno);
 
-	if (mp == 0) {
+	if (!mp) {
 		jfs_err("add_index: get/read_metapage failed!");
 		goto clean_up;
 	}
@@ -499,7 +500,7 @@
 
 	dirtab_slot = find_index(ip, index, &mp, &lblock);
 
-	if (dirtab_slot == 0)
+	if (!dirtab_slot)
 		return;
 
 	dirtab_slot->flag = DIR_INDEX_FREE;
@@ -526,7 +527,7 @@
 
 	dirtab_slot = find_index(ip, index, mp, lblock);
 
-	if (dirtab_slot == 0)
+	if (!dirtab_slot)
 		return;
 
 	DTSaddress(dirtab_slot, bn);
@@ -552,7 +553,7 @@
 	struct dir_table_slot *slot;
 
 	slot = find_index(ip, index, &mp, &lblock);
-	if (slot == 0) {
+	if (!slot) {
 		return -EIO;
 	}
 
@@ -593,7 +594,7 @@
 	struct super_block *sb = ip->i_sb;
 
 	ciKey.name = kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t), GFP_NOFS);
-	if (ciKey.name == 0) {
+	if (!ciKey.name) {
 		rc = -ENOMEM;
 		goto dtSearch_Exit2;
 	}
@@ -956,7 +957,7 @@
 	sp = DT_PAGE(ip, smp);
 
 	key.name = kmalloc((JFS_NAME_MAX + 2) * sizeof(wchar_t), GFP_NOFS);
-	if (key.name == 0) {
+	if (!key.name) {
 		DT_PUTPAGE(smp);
 		rc = -ENOMEM;
 		goto dtSplitUp_Exit;
diff --git a/fs/jfs/jfs_imap.c b/fs/jfs/jfs_imap.c
index 3870ba8..9bf29f7 100644
--- a/fs/jfs/jfs_imap.c
+++ b/fs/jfs/jfs_imap.c
@@ -381,7 +381,7 @@
 
 	/* read the page of disk inode */
 	mp = read_metapage(ipimap, pageno << sbi->l2nbperpage, PSIZE, 1);
-	if (mp == 0) {
+	if (!mp) {
 		jfs_err("diRead: read_metapage failed");
 		return -EIO;
 	}
@@ -654,7 +654,7 @@
 	/* read the page of disk inode */
       retry:
 	mp = read_metapage(ipimap, pageno << sbi->l2nbperpage, PSIZE, 1);
-	if (mp == 0)
+	if (!mp)
 		return -EIO;
 
 	/* get the pointer to the disk inode */
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index 2370716..325a967 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -2345,7 +2345,7 @@
 
 	do {
 		spin_lock_irq(&log_redrive_lock);
-		while ((bp = log_redrive_list) != 0) {
+		while ((bp = log_redrive_list)) {
 			log_redrive_list = bp->l_redrive_next;
 			bp->l_redrive_next = NULL;
 			spin_unlock_irq(&log_redrive_lock);
diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c
index 644429a..7b698f2 100644
--- a/fs/jfs/jfs_mount.c
+++ b/fs/jfs/jfs_mount.c
@@ -147,7 +147,7 @@
 	 */
 	if ((sbi->mntflag & JFS_BAD_SAIT) == 0) {
 		ipaimap2 = diReadSpecial(sb, AGGREGATE_I, 1);
-		if (ipaimap2 == 0) {
+		if (!ipaimap2) {
 			jfs_err("jfs_mount: Faild to read AGGREGATE_I");
 			rc = -EIO;
 			goto errout35;
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 4e0a849..d6e5eba 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1103,7 +1103,7 @@
 	 * Make sure dest inode number (if any) is what we think it is
 	 */
 	rc = dtSearch(new_dir, &new_dname, &ino, &btstack, JFS_LOOKUP);
-	if (rc == 0) {
+	if (!rc) {
 		if ((new_ip == 0) || (ino != new_ip->i_ino)) {
 			rc = -ESTALE;
 			goto out3;