Merge branch 'ufs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull more ufs fixes from Al Viro:
 "More UFS fixes, unfortunately including build regression fix for the
  64-bit s_dsize commit. Fixed in this pile:

   - trivial bug in signedness of 32bit timestamps on ufs1

   - ESTALE instead of ufs_error() when doing open-by-fhandle on
     something deleted

   - build regression on 32bit in ufs_new_fragments() - calculating that
     many percents of u64 pulls libgcc stuff on some of those. Mea
     culpa.

   - fix hysteresis loop broken by typo in 2.4.14.7 (right next to the
     location of previous bug).

   - fix the insane limits of said hysteresis loop on filesystems with
     very low percentage of reserved blocks. If it's 5% or less, just
     use the OPTSPACE policy.

   - calculate those limits once and mount time.

  This tree does pass xfstests clean (both ufs1 and ufs2) and it _does_
  survive cross-builds.

  Again, my apologies for missing that, especially since I have noticed
  a related percentage-of-64bit issue in earlier patches (when dealing
  with amount of reserved blocks). Self-LART applied..."

* 'ufs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ufs: fix the logics for tail relocation
  ufs_iget(): fail with -ESTALE on deleted inode
  fix signedness of timestamps on ufs1

Author: torvalds

fs/ufs/balloc.c

@@ -455,24 +455,14 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment,
 	/*
 	 * allocate new block and move data
 	 */
-	switch (fs32_to_cpu(sb, usb1->fs_optim)) {
-	    case UFS_OPTSPACE:
+	if (fs32_to_cpu(sb, usb1->fs_optim) == UFS_OPTSPACE) {
 		request = newcount;
-		if (uspi->s_minfree < 5 || uspi->cs_total.cs_nffree
-		    > uspi->s_dsize * uspi->s_minfree / (2 * 100))
-			break;
-		usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
-		break;
-	    default:
-		usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
-	
-	    case UFS_OPTTIME:
+		if (uspi->cs_total.cs_nffree < uspi->s_space_to_time)
+			usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
+	} else {
 		request = uspi->s_fpb;
-		if (uspi->cs_total.cs_nffree < uspi->s_dsize *
-		    (uspi->s_minfree - 2) / 100)
-			break;
-		usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTTIME);
-		break;
+		if (uspi->cs_total.cs_nffree > uspi->s_time_to_space)
+			usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
 	}
 	result = ufs_alloc_fragments (inode, cgno, goal, request, err);
 	if (result) {

fs/ufs/inode.c

@@ -566,10 +566,8 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 	 */
 	inode->i_mode = mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
 	set_nlink(inode, fs16_to_cpu(sb, ufs_inode->ui_nlink));
-	if (inode->i_nlink == 0) {
-		ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
-		return -1;
-	}
+	if (inode->i_nlink == 0)
+		return -ESTALE;
 
 	/*
 	 * Linux now has 32-bit uid and gid, so we can support EFT.
@@ -578,9 +576,9 @@ static int ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
 	i_gid_write(inode, ufs_get_inode_gid(sb, ufs_inode));
 
 	inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
-	inode->i_atime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
-	inode->i_ctime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
-	inode->i_mtime.tv_sec = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
+	inode->i_atime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
+	inode->i_ctime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
+	inode->i_mtime.tv_sec = (signed)fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
 	inode->i_mtime.tv_nsec = 0;
 	inode->i_atime.tv_nsec = 0;
 	inode->i_ctime.tv_nsec = 0;
@@ -614,10 +612,8 @@ static int ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
 	 */
 	inode->i_mode = mode = fs16_to_cpu(sb, ufs2_inode->ui_mode);
 	set_nlink(inode, fs16_to_cpu(sb, ufs2_inode->ui_nlink));
-	if (inode->i_nlink == 0) {
-		ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlink\n", inode->i_ino);
-		return -1;
-	}
+	if (inode->i_nlink == 0)
+		return -ESTALE;
 
         /*
          * Linux now has 32-bit uid and gid, so we can support EFT.
@@ -657,7 +653,7 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
 	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 	struct buffer_head * bh;
 	struct inode *inode;
-	int err;
+	int err = -EIO;
 
 	UFSD("ENTER, ino %lu\n", ino);
 
@@ -692,9 +688,10 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
 		err = ufs1_read_inode(inode,
 				      ufs_inode + ufs_inotofsbo(inode->i_ino));
 	}
-
+	brelse(bh);
 	if (err)
 		goto bad_inode;
+
 	inode->i_version++;
 	ufsi->i_lastfrag =
 		(inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
@@ -703,15 +700,13 @@ struct inode *ufs_iget(struct super_block *sb, unsigned long ino)
 
 	ufs_set_inode_ops(inode);
 
-	brelse(bh);
-
 	UFSD("EXIT\n");
 	unlock_new_inode(inode);
 	return inode;
 
 bad_inode:
 	iget_failed(inode);
-	return ERR_PTR(-EIO);
+	return ERR_PTR(err);
 }
 
 static void ufs1_update_inode(struct inode *inode, struct ufs_inode *ufs_inode)

fs/ufs/super.c

@@ -1210,6 +1210,15 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 
 	uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize,
 					      uspi->s_minfree, 100);
+	if (uspi->s_minfree <= 5) {
+		uspi->s_time_to_space = ~0ULL;
+		uspi->s_space_to_time = 0;
+		usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
+	} else {
+		uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1;
+		uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize,
+					      uspi->s_minfree - 2, 100) - 1;
+	}
 
 	/*
 	 * Compute another frequently used values

fs/ufs/ufs_fs.h

@@ -792,6 +792,8 @@ struct ufs_sb_private_info {
 	__s32	fs_magic;       /* filesystem magic */
 	unsigned int s_dirblksize;
 	__u64   s_root_blocks;
+	__u64	s_time_to_space;
+	__u64	s_space_to_time;
 };
 
 /*