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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

8
fs/udf/partition.c
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@@ -55,6 +55,7 @@ uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
struct udf_sb_info *sbi = UDF_SB(sb);
struct udf_part_map *map;
struct udf_virtual_data *vdata;
struct udf_inode_info *iinfo;
map = &sbi->s_partmaps[partition];
vdata = &map->s_type_specific.s_virtual;
@@ -88,15 +89,14 @@ uint32_t udf_get_pblock_virt15(struct super_block *sb, uint32_t block,
brelse(bh);
if (UDF_I(sbi->s_vat_inode)->i_location.partitionReferenceNum ==
partition) {
iinfo = UDF_I(sbi->s_vat_inode);
if (iinfo->i_location.partitionReferenceNum == partition) {
udf_debug("recursive call to udf_get_pblock!\n");
return 0xFFFFFFFF;
}
return udf_get_pblock(sb, loc,
UDF_I(sbi->s_vat_inode)->i_location.
partitionReferenceNum,
iinfo->i_location.partitionReferenceNum,
offset);
}