linux-kernel - [PATCH 3.19 142/175] udf: Remove repeated loads blocksize

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Message-Id: <20150304061049.428148190@linuxfoundation.org>
Date:	Tue,  3 Mar 2015 22:15:20 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: [PATCH 3.19 142/175] udf: Remove repeated loads blocksize

3.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Kara <jack@...e.cz>

commit 79144954278d4bb5989f8b903adcac7a20ff2a5a upstream.

Store blocksize in a local variable in udf_fill_inode() since it is used
a lot of times.

Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/udf/inode.c |   19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1288,6 +1288,7 @@ static int udf_read_inode(struct inode *
 	struct kernel_lb_addr *iloc = &iinfo->i_location;
 	unsigned int link_count;
 	unsigned int indirections = 0;
+	int bs = inode->i_sb->s_blocksize;
 	int ret = -EIO;
 
 reread:
@@ -1374,38 +1375,35 @@ reread:
 	if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) {
 		iinfo->i_efe = 1;
 		iinfo->i_use = 0;
-		ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		ret = udf_alloc_i_data(inode, bs -
 					sizeof(struct extendedFileEntry));
 		if (ret)
 			goto out;
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct extendedFileEntry),
-		       inode->i_sb->s_blocksize -
-					sizeof(struct extendedFileEntry));
+		       bs - sizeof(struct extendedFileEntry));
 	} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) {
 		iinfo->i_efe = 0;
 		iinfo->i_use = 0;
-		ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
-						sizeof(struct fileEntry));
+		ret = udf_alloc_i_data(inode, bs - sizeof(struct fileEntry));
 		if (ret)
 			goto out;
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct fileEntry),
-		       inode->i_sb->s_blocksize - sizeof(struct fileEntry));
+		       bs - sizeof(struct fileEntry));
 	} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
 		iinfo->i_efe = 0;
 		iinfo->i_use = 1;
 		iinfo->i_lenAlloc = le32_to_cpu(
 				((struct unallocSpaceEntry *)bh->b_data)->
 				 lengthAllocDescs);
-		ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		ret = udf_alloc_i_data(inode, bs -
 					sizeof(struct unallocSpaceEntry));
 		if (ret)
 			goto out;
 		memcpy(iinfo->i_ext.i_data,
 		       bh->b_data + sizeof(struct unallocSpaceEntry),
-		       inode->i_sb->s_blocksize -
-					sizeof(struct unallocSpaceEntry));
+		       bs - sizeof(struct unallocSpaceEntry));
 		return 0;
 	}
 
@@ -1498,8 +1496,7 @@ reread:
 		if (iinfo->i_lenAlloc != inode->i_size)
 			goto out;
 		/* File in ICB has to fit in there... */
-		if (inode->i_size > inode->i_sb->s_blocksize -
-					udf_file_entry_alloc_offset(inode))
+		if (inode->i_size > bs - udf_file_entry_alloc_offset(inode))
 			goto out;
 	}
 


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