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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
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8
fs/udf/dir.c
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@@ -117,6 +117,7 @@ do_udf_readdir(struct inode *dir, struct file *filp, filldir_t filldir,
int i, num;
unsigned int dt_type;
struct extent_position epos = { NULL, 0, {0, 0} };
struct udf_inode_info *iinfo;
if (nf_pos >= size)
return 0;
@@ -125,15 +126,16 @@ do_udf_readdir(struct inode *dir, struct file *filp, filldir_t filldir,
nf_pos = (udf_ext0_offset(dir) >> 2);
fibh.soffset = fibh.eoffset = (nf_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
iinfo = UDF_I(dir);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
fibh.sbh = fibh.ebh = NULL;
} else if (inode_bmap(dir, nf_pos >> (dir->i_sb->s_blocksize_bits - 2),
&epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30)) {
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen) {
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(short_ad);
else if (UDF_I(dir)->i_alloc_type ==
else if (iinfo->i_alloc_type ==
ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(long_ad);
} else {