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authorMarcin Slusarz <marcin.slusarz@gmail.com>2008-02-08 15:20:44 +0300
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 20:22:35 +0300
commit48d6d8ff7dca804536298e517298182c4a51c421 (patch)
tree8566ae59bdd01fb3568b6441b909d035dba7b61b /fs/udf/file.c
parentc0b344385fa05f6bea462e707fcba89f9e2776c2 (diff)
downloadlinux-48d6d8ff7dca804536298e517298182c4a51c421.tar.xz
udf: cache struct udf_inode_info
cache UDF_I(struct inode *) return values when there are at least 2 uses in one function Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Jan Kara <jack@suse.cz> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/udf/file.c')
-rw-r--r--fs/udf/file.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/fs/udf/file.c b/fs/udf/file.c
index a1e07a131623..97c71ae7c689 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -45,13 +45,13 @@ static int udf_adinicb_readpage(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
char *kaddr;
+ struct udf_inode_info *iinfo = UDF_I(inode);
BUG_ON(!PageLocked(page));
kaddr = kmap(page);
memset(kaddr, 0, PAGE_CACHE_SIZE);
- memcpy(kaddr, UDF_I(inode)->i_ext.i_data + UDF_I(inode)->i_lenEAttr,
- inode->i_size);
+ memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr, inode->i_size);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap(page);
@@ -65,12 +65,12 @@ static int udf_adinicb_writepage(struct page *page,
{
struct inode *inode = page->mapping->host;
char *kaddr;
+ struct udf_inode_info *iinfo = UDF_I(inode);
BUG_ON(!PageLocked(page));
kaddr = kmap(page);
- memcpy(UDF_I(inode)->i_ext.i_data + UDF_I(inode)->i_lenEAttr, kaddr,
- inode->i_size);
+ memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr, inode->i_size);
mark_inode_dirty(inode);
SetPageUptodate(page);
kunmap(page);
@@ -87,9 +87,10 @@ static int udf_adinicb_write_end(struct file *file,
struct inode *inode = mapping->host;
unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
char *kaddr;
+ struct udf_inode_info *iinfo = UDF_I(inode);
kaddr = kmap_atomic(page, KM_USER0);
- memcpy(UDF_I(inode)->i_ext.i_data + UDF_I(inode)->i_lenEAttr + offset,
+ memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset,
kaddr + offset, copied);
kunmap_atomic(kaddr, KM_USER0);
@@ -112,8 +113,9 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
struct inode *inode = file->f_path.dentry->d_inode;
int err, pos;
size_t count = iocb->ki_left;
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
if (file->f_flags & O_APPEND)
pos = inode->i_size;
else
@@ -123,16 +125,15 @@ static ssize_t udf_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
(udf_file_entry_alloc_offset(inode) +
pos + count)) {
udf_expand_file_adinicb(inode, pos + count, &err);
- if (UDF_I(inode)->i_alloc_type ==
- ICBTAG_FLAG_AD_IN_ICB) {
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
udf_debug("udf_expand_adinicb: err=%d\n", err);
return err;
}
} else {
if (pos + count > inode->i_size)
- UDF_I(inode)->i_lenAlloc = pos + count;
+ iinfo->i_lenAlloc = pos + count;
else
- UDF_I(inode)->i_lenAlloc = inode->i_size;
+ iinfo->i_lenAlloc = inode->i_size;
}
}