Updated patch

a) ext4-cleanup-2.patch
    sparse fixes for unlock error. 
b) add ext4-Return-after-ext4_error-in-case-of-failures.patch 
c) add mballoc-compilebench-fix.patch


patches are attached. New patches are added towards the end.

series
.....
ext4-cleanup-2.patch
ext4-cleanup-3.patch
ext4-cleanup-4.patch
48-bit-i_blocks.patch
large-file.patch
ext2_fix_max_size.patch
ext3_fix_max_size.patch
ext4_sync_group_desciptor_with_e2fsprogs.patch
ext4-Return-after-ext4_error-in-case-of-failures.patch
mballoc-compilebench-fix.patch

putting the diff for easy review.

-aneesh

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index e29306e..8e42546 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -234,11 +234,13 @@ read_block_bitmap(struct super_block *sb, ext4_grpnum_t block_group)
 	} else {
 		bh = sb_bread(sb, bitmap_blk);
 	}
-	if (!bh)
+	if (!bh) {
 		ext4_error (sb, __FUNCTION__,
 			    "Cannot read block bitmap - "
 			    "block_group = %lu, block_bitmap = %llu",
 			    block_group, bitmap_blk);
+		return NULL;
+	}
 
 	/* check whether block bitmap block number is set */
 	if (!block_in_use(bitmap_blk, sb, bh->b_data)) {
@@ -630,11 +632,13 @@ do_more:
 	    in_range(ext4_inode_bitmap(sb, desc), block, count) ||
 	    in_range(block, ext4_inode_table(sb, desc), sbi->s_itb_per_group) ||
 	    in_range(block + count - 1, ext4_inode_table(sb, desc),
-		     sbi->s_itb_per_group))
+		     sbi->s_itb_per_group)) {
 		ext4_error (sb, "ext4_free_blocks",
 			    "Freeing blocks in system zones - "
 			    "Block = %llu, count = %lu",
 			    block, count);
+		goto error_return;
+	}
 
 	/*
 	 * We are about to start releasing blocks in the bitmap,
@@ -1746,11 +1750,13 @@ allocated:
 	    in_range(ret_block, ext4_inode_table(sb, gdp),
 		     EXT4_SB(sb)->s_itb_per_group) ||
 	    in_range(ret_block + num - 1, ext4_inode_table(sb, gdp),
-		     EXT4_SB(sb)->s_itb_per_group))
+		     EXT4_SB(sb)->s_itb_per_group)) {
 		ext4_error(sb, "ext4_new_block",
 			    "Allocating block in system zone - "
 			    "blocks from %llu, length %lu",
 			     ret_block, num);
+		goto out;
+	}
 
 	performed_allocation = 1;
 
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index fe7cf9e..8467b3d 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3089,13 +3089,14 @@ static void ext4_mb_normalize_request(struct ext4_allocation_context *ac,
 		}
 	}
 	if (wind == 0) {
+		__u64 tstart;
 		/* file is quite large, we now preallocate with
 		 * the biggest configured window with regart to
 		 * logical offset */
 		wind = sbi->s_mb_prealloc_table[i - 1];
-		start = ac->ac_o_ex.fe_logical;
-		do_div(start, wind);
-		start = start * wind;
+		tstart = ac->ac_o_ex.fe_logical;
+		do_div(tstart, wind);
+		start = tstart * wind;
 	}
 	size = wind;
 	orig_size = size;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 801c499..10feae6 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1713,6 +1713,9 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb,
 
 
 static int ext4_fill_super (struct super_block *sb, void *data, int silent)
+				__releases(kernel_sem)
+				__acquires(kernel_sem)
+
 {
 	struct buffer_head * bh;
 	struct ext4_super_block *es = NULL;