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>
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 23e5306..35e5beb 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -158,23 +158,23 @@
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
+ struct udf_inode_info *dinfo = UDF_I(dir);
size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
f_pos = (udf_ext0_offset(dir) >> 2);
fibh->soffset = fibh->eoffset =
(f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
fibh->sbh = fibh->ebh = NULL;
else if (inode_bmap(dir, f_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 (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(short_ad);
- else if (UDF_I(dir)->i_alloc_type ==
- ICBTAG_FLAG_AD_LONG)
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(long_ad);
} else
offset = 0;
@@ -351,6 +351,7 @@
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
+ struct udf_inode_info *dinfo;
if (dentry) {
if (!dentry->d_name.len) {
@@ -373,17 +374,17 @@
fibh->soffset = fibh->eoffset =
(f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ dinfo = UDF_I(dir);
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
fibh->sbh = fibh->ebh = NULL;
else if (inode_bmap(dir, f_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 (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(short_ad);
- else if (UDF_I(dir)->i_alloc_type ==
- ICBTAG_FLAG_AD_LONG)
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(long_ad);
} else
offset = 0;
@@ -395,10 +396,10 @@
return NULL;
}
- block = UDF_I(dir)->i_location.logicalBlockNum;
+ block = dinfo->i_location.logicalBlockNum;
} else {
- block = udf_get_lb_pblock(dir->i_sb, UDF_I(dir)->i_location, 0);
+ block = udf_get_lb_pblock(dir->i_sb, dinfo->i_location, 0);
fibh->sbh = fibh->ebh = NULL;
fibh->soffset = fibh->eoffset = sb->s_blocksize;
goto add;
@@ -477,7 +478,7 @@
add:
f_pos += nfidlen;
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB &&
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB &&
sb->s_blocksize - fibh->eoffset < nfidlen) {
brelse(epos.bh);
epos.bh = NULL;
@@ -491,15 +492,15 @@
udf_expand_dir_adinicb(dir, &block, err);
if (!fibh->sbh)
return NULL;
- epos.block = UDF_I(dir)->i_location;
+ epos.block = dinfo->i_location;
eloc.logicalBlockNum = block;
eloc.partitionReferenceNum =
- UDF_I(dir)->i_location.partitionReferenceNum;
+ dinfo->i_location.partitionReferenceNum;
elen = dir->i_sb->s_blocksize;
epos.offset = udf_file_entry_alloc_offset(dir);
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset += sizeof(short_ad);
- else if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
epos.offset += sizeof(long_ad);
}
@@ -511,13 +512,13 @@
fibh->sbh = fibh->ebh;
}
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
- block = UDF_I(dir)->i_location.logicalBlockNum;
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ block = dinfo->i_location.logicalBlockNum;
fi = (struct fileIdentDesc *)
- (UDF_I(dir)->i_ext.i_data +
+ (dinfo->i_ext.i_data +
fibh->soffset -
udf_ext0_offset(dir) +
- UDF_I(dir)->i_lenEAttr);
+ dinfo->i_lenEAttr);
} else {
block = eloc.logicalBlockNum +
((elen - 1) >>
@@ -575,8 +576,8 @@
if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name)) {
brelse(epos.bh);
dir->i_size += nfidlen;
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
- UDF_I(dir)->i_lenAlloc += nfidlen;
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ dinfo->i_lenAlloc += nfidlen;
mark_inode_dirty(dir);
return fi;
} else {
@@ -608,6 +609,7 @@
struct inode *inode;
struct fileIdentDesc cfi, *fi;
int err;
+ struct udf_inode_info *iinfo;
lock_kernel();
inode = udf_new_inode(dir, mode, &err);
@@ -616,7 +618,8 @@
return err;
}
- if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ iinfo = UDF_I(inode);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
inode->i_data.a_ops = &udf_adinicb_aops;
else
inode->i_data.a_ops = &udf_aops;
@@ -634,9 +637,9 @@
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
- cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
+ cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(UDF_I(inode)->i_unique & 0x00000000FFFFFFFFUL);
+ cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL);
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
mark_inode_dirty(dir);
@@ -656,6 +659,7 @@
struct udf_fileident_bh fibh;
struct fileIdentDesc cfi, *fi;
int err;
+ struct udf_inode_info *iinfo;
if (!old_valid_dev(rdev))
return -EINVAL;
@@ -666,6 +670,7 @@
if (!inode)
goto out;
+ iinfo = UDF_I(inode);
inode->i_uid = current->fsuid;
init_special_inode(inode, mode, rdev);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
@@ -677,9 +682,9 @@
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
- cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
+ cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(UDF_I(inode)->i_unique & 0x00000000FFFFFFFFUL);
+ cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL);
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
mark_inode_dirty(dir);
@@ -702,6 +707,8 @@
struct udf_fileident_bh fibh;
struct fileIdentDesc cfi, *fi;
int err;
+ struct udf_inode_info *dinfo = UDF_I(dir);
+ struct udf_inode_info *iinfo;
lock_kernel();
err = -EMLINK;
@@ -713,6 +720,7 @@
if (!inode)
goto out;
+ iinfo = UDF_I(inode);
inode->i_op = &udf_dir_inode_operations;
inode->i_fop = &udf_dir_operations;
fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err);
@@ -724,9 +732,9 @@
}
inode->i_nlink = 2;
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
- cfi.icb.extLocation = cpu_to_lelb(UDF_I(dir)->i_location);
+ cfi.icb.extLocation = cpu_to_lelb(dinfo->i_location);
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(UDF_I(dir)->i_unique & 0x00000000FFFFFFFFUL);
+ cpu_to_le32(dinfo->i_unique & 0x00000000FFFFFFFFUL);
cfi.fileCharacteristics =
FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT;
udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL);
@@ -744,9 +752,9 @@
goto out;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
- cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
+ cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(UDF_I(inode)->i_unique & 0x00000000FFFFFFFFUL);
+ cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL);
cfi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY;
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
inc_nlink(dir);
@@ -773,23 +781,23 @@
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
+ struct udf_inode_info *dinfo = UDF_I(dir);
f_pos = (udf_ext0_offset(dir) >> 2);
fibh.soffset = fibh.eoffset =
(f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
- if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
fibh.sbh = fibh.ebh = NULL;
else if (inode_bmap(dir, f_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 (dinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
epos.offset -= sizeof(short_ad);
- else if (UDF_I(dir)->i_alloc_type ==
- ICBTAG_FLAG_AD_LONG)
+ else if (dinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
epos.offset -= sizeof(long_ad);
} else
offset = 0;
@@ -939,38 +947,40 @@
char name[UDF_NAME_LEN];
int namelen;
struct buffer_head *bh;
+ struct udf_inode_info *iinfo;
lock_kernel();
inode = udf_new_inode(dir, S_IFLNK, &err);
if (!inode)
goto out;
+ iinfo = UDF_I(inode);
inode->i_mode = S_IFLNK | S_IRWXUGO;
inode->i_data.a_ops = &udf_symlink_aops;
inode->i_op = &page_symlink_inode_operations;
- if (UDF_I(inode)->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
kernel_lb_addr eloc;
uint32_t elen;
block = udf_new_block(inode->i_sb, inode,
- UDF_I(inode)->i_location.partitionReferenceNum,
- UDF_I(inode)->i_location.logicalBlockNum, &err);
+ iinfo->i_location.partitionReferenceNum,
+ iinfo->i_location.logicalBlockNum, &err);
if (!block)
goto out_no_entry;
- epos.block = UDF_I(inode)->i_location;
+ epos.block = iinfo->i_location;
epos.offset = udf_file_entry_alloc_offset(inode);
epos.bh = NULL;
eloc.logicalBlockNum = block;
eloc.partitionReferenceNum =
- UDF_I(inode)->i_location.partitionReferenceNum;
+ iinfo->i_location.partitionReferenceNum;
elen = inode->i_sb->s_blocksize;
- UDF_I(inode)->i_lenExtents = elen;
+ iinfo->i_lenExtents = elen;
udf_add_aext(inode, &epos, eloc, elen, 0);
brelse(epos.bh);
block = udf_get_pblock(inode->i_sb, block,
- UDF_I(inode)->i_location.partitionReferenceNum,
+ iinfo->i_location.partitionReferenceNum,
0);
epos.bh = udf_tread(inode->i_sb, block);
lock_buffer(epos.bh);
@@ -979,9 +989,8 @@
unlock_buffer(epos.bh);
mark_buffer_dirty_inode(epos.bh, inode);
ea = epos.bh->b_data + udf_ext0_offset(inode);
- } else {
- ea = UDF_I(inode)->i_ext.i_data + UDF_I(inode)->i_lenEAttr;
- }
+ } else
+ ea = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
eoffset = inode->i_sb->s_blocksize - udf_ext0_offset(inode);
pc = (struct pathComponent *)ea;
@@ -1049,15 +1058,15 @@
brelse(epos.bh);
inode->i_size = elen;
- if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
- UDF_I(inode)->i_lenAlloc = inode->i_size;
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ iinfo->i_lenAlloc = inode->i_size;
mark_inode_dirty(inode);
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi)
goto out_no_entry;
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
- cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
+ cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
bh = UDF_SB(inode->i_sb)->s_lvid_bh;
if (bh) {
struct logicalVolIntegrityDesc *lvid =
@@ -1162,6 +1171,7 @@
struct buffer_head *dir_bh = NULL;
int retval = -ENOENT;
kernel_lb_addr tloc;
+ struct udf_inode_info *old_iinfo = UDF_I(old_inode);
lock_kernel();
ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi);
@@ -1193,10 +1203,10 @@
goto end_rename;
}
retval = -EIO;
- if (UDF_I(old_inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ if (old_iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
dir_fi = udf_get_fileident(
- UDF_I(old_inode)->i_ext.i_data -
- (UDF_I(old_inode)->i_efe ?
+ old_iinfo->i_ext.i_data -
+ (old_iinfo->i_efe ?
sizeof(struct extendedFileEntry) :
sizeof(struct fileEntry)),
old_inode->i_sb->s_blocksize, &offset);
@@ -1258,7 +1268,7 @@
udf_update_tag((char *)dir_fi,
(sizeof(struct fileIdentDesc) +
le16_to_cpu(dir_fi->lengthOfImpUse) + 3) & ~3);
- if (UDF_I(old_inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ if (old_iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
mark_inode_dirty(old_inode);
else
mark_buffer_dirty_inode(dir_bh, old_inode);
