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Groups > linux.kernel > #1223532 > unrolled thread

[PATCH 2.6.32 13/62] Remove repeated loads blocksize

Started byWilly Tarreau <w@1wt.eu>
First post2015-09-13 01:30 +0200
Last post2015-09-15 09:40 +0200
Articles 3 — 2 participants

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  [PATCH 2.6.32 13/62] Remove repeated loads blocksize Willy Tarreau <w@1wt.eu> - 2015-09-13 01:30 +0200
    Re: [PATCH 2.6.32 13/62] Remove repeated loads blocksize Ben Hutchings <ben@decadent.org.uk> - 2015-09-15 03:50 +0200
      Re: [PATCH 2.6.32 13/62] Remove repeated loads blocksize Willy Tarreau <w@1wt.eu> - 2015-09-15 09:40 +0200

#1223532 — [PATCH 2.6.32 13/62] Remove repeated loads blocksize

FromWilly Tarreau <w@1wt.eu>
Date2015-09-13 01:30 +0200
Subject[PATCH 2.6.32 13/62] Remove repeated loads blocksize
Message-ID<q82p5-6WW-63@gated-at.bofh.it>
2.6.32-longterm review patch.  If anyone has any objections, please let me know.

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

From: Jan Kara <jack@suse.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@suse.cz>
[bwh: Needed for the following fix. Backported to 2.6.32: adjust context.]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
 fs/udf/inode.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 7901ad7..26b7f31 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1157,6 +1157,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 	int offset;
 	struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
 	struct udf_inode_info *iinfo = UDF_I(inode);
+	int bs = inode->i_sb->s_blocksize;
 
 	fe = (struct fileEntry *)bh->b_data;
 	efe = (struct extendedFileEntry *)bh->b_data;
@@ -1177,41 +1178,38 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 	if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) {
 		iinfo->i_efe = 1;
 		iinfo->i_use = 0;
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		if (udf_alloc_i_data(inode, bs -
 					sizeof(struct extendedFileEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		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;
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
-						sizeof(struct fileEntry))) {
+		if (udf_alloc_i_data(inode, bs - sizeof(struct fileEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		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);
-		if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+		if (udf_alloc_i_data(inode, bs -
 					sizeof(struct unallocSpaceEntry))) {
 			make_bad_inode(inode);
 			return;
 		}
 		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;
 	}
 
@@ -1297,8 +1295,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 			return;
 		}
 		/* 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)) {
 			make_bad_inode(inode);
 			return;
 		}
-- 
1.7.12.2.21.g234cd45.dirty



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#1224584

FromBen Hutchings <ben@decadent.org.uk>
Date2015-09-15 03:50 +0200
Message-ID<q8NxD-763-1@gated-at.bofh.it>
In reply to#1223532
On Sun, 2015-09-13 at 00:56 +0200, Willy Tarreau wrote:
> 2.6.32-longterm review patch.  If anyone has any objections, please let me know.
[...]

This is missing the 'udf:' prefix in the subject line.  Otherwise fine.

Ben.

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#1224720

FromWilly Tarreau <w@1wt.eu>
Date2015-09-15 09:40 +0200
Message-ID<q8T0m-6AI-23@gated-at.bofh.it>
In reply to#1224584
On Tue, Sep 15, 2015 at 02:42:33AM +0100, Ben Hutchings wrote:
> On Sun, 2015-09-13 at 00:56 +0200, Willy Tarreau wrote:
> > 2.6.32-longterm review patch.  If anyone has any objections, please let me know.
> [...]
> 
> This is missing the 'udf:' prefix in the subject line.  Otherwise fine.

Adjusted now, thanks!

Willy

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