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udf: cache struct udf_inode_info

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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>
This commit is contained in:
Marcin Slusarz 2008-02-08 04:20:44 -08:00 • committed by Linus Torvalds
parent c0b344385f
commit 48d6d8ff7d
11 changed files with 338 additions and 290 deletions
Download patch file Download diff file Expand all files Collapse all files

37
fs/udf/truncate.c
View file

@ -74,17 +74,18 @@ void udf_truncate_tail_extent(struct inode *inode)
uint64_t lbcount = 0;
int8_t etype = -1, netype;
int adsize;
struct udf_inode_info *iinfo = UDF_I(inode);
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
inode->i_size == UDF_I(inode)->i_lenExtents)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
inode->i_size == iinfo->i_lenExtents)
return;
/* Are we going to delete the file anyway? */
if (inode->i_nlink == 0)
return;
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
else if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
BUG();
@ -117,7 +118,7 @@ void udf_truncate_tail_extent(struct inode *inode)
}
/* This inode entry is in-memory only and thus we don't have to mark
* the inode dirty */
UDF_I(inode)->i_lenExtents = inode->i_size;
iinfo->i_lenExtents = inode->i_size;
brelse(epos.bh);
}
@ -129,19 +130,20 @@ void udf_discard_prealloc(struct inode *inode)
uint64_t lbcount = 0;
int8_t etype = -1, netype;
int adsize;
struct udf_inode_info *iinfo = UDF_I(inode);
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
inode->i_size == UDF_I(inode)->i_lenExtents)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
inode->i_size == iinfo->i_lenExtents)
return;
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
else if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
adsize = 0;
epos.block = UDF_I(inode)->i_location;
epos.block = iinfo->i_location;
/* Find the last extent in the file */
while ((netype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) {
@ -153,7 +155,7 @@ void udf_discard_prealloc(struct inode *inode)
lbcount -= elen;
extent_trunc(inode, &epos, eloc, etype, elen, 0);
if (!epos.bh) {
UDF_I(inode)->i_lenAlloc =
iinfo->i_lenAlloc =
epos.offset -
udf_file_entry_alloc_offset(inode);
mark_inode_dirty(inode);
@ -174,7 +176,7 @@ void udf_discard_prealloc(struct inode *inode)
}
/* This inode entry is in-memory only and thus we don't have to mark
* the inode dirty */
UDF_I(inode)->i_lenExtents = lbcount;
iinfo->i_lenExtents = lbcount;
brelse(epos.bh);
}
@ -189,10 +191,11 @@ void udf_truncate_extents(struct inode *inode)
sector_t first_block = inode->i_size >> sb->s_blocksize_bits, offset;
loff_t byte_offset;
int adsize;
struct udf_inode_info *iinfo = UDF_I(inode);
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
else if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
BUG();
@ -227,7 +230,7 @@ void udf_truncate_extents(struct inode *inode)
0, indirect_ext_len);
} else {
if (!epos.bh) {
UDF_I(inode)->i_lenAlloc =
iinfo->i_lenAlloc =
lenalloc;
mark_inode_dirty(inode);
} else {
@ -275,7 +278,7 @@ void udf_truncate_extents(struct inode *inode)
indirect_ext_len);
} else {
if (!epos.bh) {
UDF_I(inode)->i_lenAlloc = lenalloc;
iinfo->i_lenAlloc = lenalloc;
mark_inode_dirty(inode);
} else {
struct allocExtDesc *aed =
@ -325,7 +328,7 @@ void udf_truncate_extents(struct inode *inode)
(sb->s_blocksize - 1)) != 0));
}
}
UDF_I(inode)->i_lenExtents = inode->i_size;
iinfo->i_lenExtents = inode->i_size;
brelse(epos.bh);
}