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Date:	Thu, 18 Oct 2007 15:59:34 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	cmm@...ibm.com, adilger@...sterfs.com
Cc:	linux-ext4@...r.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [RFC][PATCH 4/6] ext4: code cleanup

rename ext4_inode.i_dir_acl to i_size_high
drop ext4_inode_info.i_dir_acl as it is not used

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
---
 fs/ext4/ialloc.c          |    1 -
 fs/ext4/inode.c           |   55 ++++++++++++++++++---------------------------
 include/linux/ext4_fs.h   |   15 +++++++++--
 include/linux/ext4_fs_i.h |    1 -
 4 files changed, 34 insertions(+), 38 deletions(-)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index de40401..d775170 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -708,7 +708,6 @@ got:
 	if (!S_ISDIR(mode))
 		ei->i_flags &= ~EXT4_DIRSYNC_FL;
 	ei->i_file_acl = 0;
-	ei->i_dir_acl = 0;
 	ei->i_dtime = 0;
 	ei->i_block_alloc_info = NULL;
 	ei->i_block_group = group;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index ef073df..39859cf 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2801,7 +2801,6 @@ void ext4_read_inode(struct inode * inode)
 		inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
 	}
 	inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
-	inode->i_size = le32_to_cpu(raw_inode->i_size);
 
 	ei->i_state = 0;
 	ei->i_dir_start_lookup = 0;
@@ -2827,15 +2826,11 @@ void ext4_read_inode(struct inode * inode)
 	ei->i_flags = le32_to_cpu(raw_inode->i_flags);
 	ei->i_file_acl = le32_to_cpu(raw_inode->i_file_acl_lo);
 	if (EXT4_SB(inode->i_sb)->s_es->s_creator_os !=
-	    cpu_to_le32(EXT4_OS_HURD))
+	    cpu_to_le32(EXT4_OS_HURD)) {
 		ei->i_file_acl |=
 			((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
-	if (!S_ISREG(inode->i_mode)) {
-		ei->i_dir_acl = le32_to_cpu(raw_inode->i_dir_acl);
-	} else {
-		inode->i_size |=
-			((__u64)le32_to_cpu(raw_inode->i_size_high)) << 32;
 	}
+	inode->i_size = ext4_isize(raw_inode);
 	ei->i_disksize = inode->i_size;
 	inode->i_generation = le32_to_cpu(raw_inode->i_generation);
 	ei->i_block_group = iloc.block_group;
@@ -2966,7 +2961,6 @@ static int ext4_do_update_inode(handle_t *handle,
 		raw_inode->i_gid_high = 0;
 	}
 	raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
-	raw_inode->i_size = cpu_to_le32(ei->i_disksize);
 
 	EXT4_INODE_SET_XTIME(i_ctime, inode, raw_inode);
 	EXT4_INODE_SET_XTIME(i_mtime, inode, raw_inode);
@@ -2981,32 +2975,27 @@ static int ext4_do_update_inode(handle_t *handle,
 		raw_inode->i_file_acl_high =
 			cpu_to_le16(ei->i_file_acl >> 32);
 	raw_inode->i_file_acl_lo = cpu_to_le32(ei->i_file_acl);
-	if (!S_ISREG(inode->i_mode)) {
-		raw_inode->i_dir_acl = cpu_to_le32(ei->i_dir_acl);
-	} else {
-		raw_inode->i_size_high =
-			cpu_to_le32(ei->i_disksize >> 32);
-		if (ei->i_disksize > 0x7fffffffULL) {
-			struct super_block *sb = inode->i_sb;
-			if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
-					EXT4_FEATURE_RO_COMPAT_LARGE_FILE) ||
-			    EXT4_SB(sb)->s_es->s_rev_level ==
-					cpu_to_le32(EXT4_GOOD_OLD_REV)) {
-			       /* If this is the first large file
-				* created, add a flag to the superblock.
-				*/
-				err = ext4_journal_get_write_access(handle,
-						EXT4_SB(sb)->s_sbh);
-				if (err)
-					goto out_brelse;
-				ext4_update_dynamic_rev(sb);
-				EXT4_SET_RO_COMPAT_FEATURE(sb,
+	ext4_isize_set(raw_inode, ei->i_disksize);
+	if (ei->i_disksize > 0x7fffffffULL) {
+		struct super_block *sb = inode->i_sb;
+		if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
+				EXT4_FEATURE_RO_COMPAT_LARGE_FILE) ||
+				EXT4_SB(sb)->s_es->s_rev_level ==
+				cpu_to_le32(EXT4_GOOD_OLD_REV)) {
+			/* If this is the first large file
+			 * created, add a flag to the superblock.
+			 */
+			err = ext4_journal_get_write_access(handle,
+					EXT4_SB(sb)->s_sbh);
+			if (err)
+				goto out_brelse;
+			ext4_update_dynamic_rev(sb);
+			EXT4_SET_RO_COMPAT_FEATURE(sb,
 					EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
-				sb->s_dirt = 1;
-				handle->h_sync = 1;
-				err = ext4_journal_dirty_metadata(handle,
-						EXT4_SB(sb)->s_sbh);
-			}
+			sb->s_dirt = 1;
+			handle->h_sync = 1;
+			err = ext4_journal_dirty_metadata(handle,
+					EXT4_SB(sb)->s_sbh);
 		}
 	}
 	raw_inode->i_generation = cpu_to_le32(inode->i_generation);
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 6464ff9..5e972ba 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -303,7 +303,7 @@ struct ext4_mount_options {
 struct ext4_inode {
 	__le16	i_mode;		/* File mode */
 	__le16	i_uid;		/* Low 16 bits of Owner Uid */
-	__le32	i_size;		/* Size in bytes */
+	__le32	i_size_lo;	/* Size in bytes */
 	__le32	i_atime;	/* Access time */
 	__le32	i_ctime;	/* Inode Change time */
 	__le32	i_mtime;	/* Modification time */
@@ -326,7 +326,7 @@ struct ext4_inode {
 	__le32	i_block[EXT4_N_BLOCKS];/* Pointers to blocks */
 	__le32	i_generation;	/* File version (for NFS) */
 	__le32	i_file_acl_lo;	/* File ACL */
-	__le32	i_dir_acl;	/* Directory ACL */
+	__le32	i_size_high;
 	__le32	i_obso_faddr;	/* Obsoleted fragment address */
 	union {
 		struct {
@@ -359,7 +359,6 @@ struct ext4_inode {
 	__le32	i_version_hi;	/* high 32 bits for 64-bit version */
 };
 
-#define i_size_high	i_dir_acl
 
 #define EXT4_EPOCH_BITS 2
 #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)
@@ -1099,7 +1098,17 @@ static inline void ext4_r_blocks_count_set(struct ext4_super_block *es,
 	es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32);
 }
 
+static inline loff_t ext4_isize(struct ext4_inode *raw_inode)
+{
+	return ((loff_t)le32_to_cpu(raw_inode->i_size_high) << 32) |
+		le32_to_cpu(raw_inode->i_size_lo);
+}
 
+static inline void ext4_isize_set(struct ext4_inode *raw_inode, loff_t i_size)
+{
+	raw_inode->i_size_lo = cpu_to_le32(i_size);
+	raw_inode->i_size_high = cpu_to_le32(i_size >> 32);
+}
 
 #define ext4_std_error(sb, errno)				\
 do {								\
diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h
index 94baea0..16249b9 100644
--- a/include/linux/ext4_fs_i.h
+++ b/include/linux/ext4_fs_i.h
@@ -85,7 +85,6 @@ struct ext4_inode_info {
 	__le32	i_data[15];	/* unconverted */
 	__u32	i_flags;
 	ext4_fsblk_t	i_file_acl;
-	__u32	i_dir_acl;
 	__u32	i_dtime;
 
 	/*
-- 
1.5.3.4.206.g58ba4-dirty

-
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