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-rw-r--r--fs/reiserfs/namei.c420
1 files changed, 261 insertions, 159 deletions
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index 1ce8fbea4749..6bc38de8357f 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -22,8 +22,10 @@
#define INC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) { inc_nlink(i); if (i->i_nlink >= REISERFS_LINK_MAX) set_nlink(i, 1); }
#define DEC_DIR_INODE_NLINK(i) if (i->i_nlink != 1) drop_nlink(i);
-// directory item contains array of entry headers. This performs
-// binary search through that array
+/*
+ * directory item contains array of entry headers. This performs
+ * binary search through that array
+ */
static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
{
struct item_head *ih = de->de_ih;
@@ -43,7 +45,7 @@ static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
lbound = j + 1;
continue;
}
- // this is not name found, but matched third key component
+ /* this is not name found, but matched third key component */
de->de_entry_num = j;
return NAME_FOUND;
}
@@ -52,7 +54,9 @@ static int bin_search_in_dir_item(struct reiserfs_dir_entry *de, loff_t off)
return NAME_NOT_FOUND;
}
-// comment? maybe something like set de to point to what the path points to?
+/*
+ * comment? maybe something like set de to point to what the path points to?
+ */
static inline void set_de_item_location(struct reiserfs_dir_entry *de,
struct treepath *path)
{
@@ -62,7 +66,9 @@ static inline void set_de_item_location(struct reiserfs_dir_entry *de,
de->de_item_num = PATH_LAST_POSITION(path);
}
-// de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
+/*
+ * de_bh, de_ih, de_deh (points to first element of array), de_item_num is set
+ */
inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
{
struct reiserfs_de_head *deh = de->de_deh + de->de_entry_num;
@@ -76,7 +82,7 @@ inline void set_de_name_and_namelen(struct reiserfs_dir_entry *de)
de->de_namelen = strlen(de->de_name);
}
-// what entry points to
+/* what entry points to */
static inline void set_de_object_key(struct reiserfs_dir_entry *de)
{
BUG_ON(de->de_entry_num >= ih_entry_count(de->de_ih));
@@ -100,17 +106,16 @@ static inline void store_de_entry_key(struct reiserfs_dir_entry *de)
set_cpu_key_k_type(&(de->de_entry_key), TYPE_DIRENTRY);
}
-/* We assign a key to each directory item, and place multiple entries
-in a single directory item. A directory item has a key equal to the
-key of the first directory entry in it.
-
-This function first calls search_by_key, then, if item whose first
-entry matches is not found it looks for the entry inside directory
-item found by search_by_key. Fills the path to the entry, and to the
-entry position in the item
-
-*/
-
+/*
+ * We assign a key to each directory item, and place multiple entries in a
+ * single directory item. A directory item has a key equal to the key of
+ * the first directory entry in it.
+
+ * This function first calls search_by_key, then, if item whose first entry
+ * matches is not found it looks for the entry inside directory item found
+ * by search_by_key. Fills the path to the entry, and to the entry position
+ * in the item
+ */
/* The function is NOT SCHEDULE-SAFE! */
int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
struct treepath *path, struct reiserfs_dir_entry *de)
@@ -152,12 +157,17 @@ int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
}
#endif /* CONFIG_REISERFS_CHECK */
- /* binary search in directory item by third componen t of the
- key. sets de->de_entry_num of de */
+ /*
+ * binary search in directory item by third component of the
+ * key. sets de->de_entry_num of de
+ */
retval = bin_search_in_dir_item(de, cpu_key_k_offset(key));
path->pos_in_item = de->de_entry_num;
if (retval != NAME_NOT_FOUND) {
- // ugly, but rename needs de_bh, de_deh, de_name, de_namelen, de_objectid set
+ /*
+ * ugly, but rename needs de_bh, de_deh, de_name,
+ * de_namelen, de_objectid set
+ */
set_de_name_and_namelen(de);
set_de_object_key(de);
}
@@ -166,11 +176,12 @@ int search_by_entry_key(struct super_block *sb, const struct cpu_key *key,
/* Keyed 32-bit hash function using TEA in a Davis-Meyer function */
-/* The third component is hashed, and you can choose from more than
- one hash function. Per directory hashes are not yet implemented
- but are thought about. This function should be moved to hashes.c
- Jedi, please do so. -Hans */
-
+/*
+ * The third component is hashed, and you can choose from more than
+ * one hash function. Per directory hashes are not yet implemented
+ * but are thought about. This function should be moved to hashes.c
+ * Jedi, please do so. -Hans
+ */
static __u32 get_third_component(struct super_block *s,
const char *name, int len)
{
@@ -183,11 +194,13 @@ static __u32 get_third_component(struct super_block *s,
res = REISERFS_SB(s)->s_hash_function(name, len);
- // take bits from 7-th to 30-th including both bounds
+ /* take bits from 7-th to 30-th including both bounds */
res = GET_HASH_VALUE(res);
if (res == 0)
- // needed to have no names before "." and ".." those have hash
- // value == 0 and generation conters 1 and 2 accordingly
+ /*
+ * needed to have no names before "." and ".." those have hash
+ * value == 0 and generation conters 1 and 2 accordingly
+ */
res = 128;
return res + MAX_GENERATION_NUMBER;
}
@@ -208,7 +221,7 @@ static int reiserfs_match(struct reiserfs_dir_entry *de,
/* de's de_bh, de_ih, de_deh, de_item_num, de_entry_num are set already */
- /* used when hash collisions exist */
+/* used when hash collisions exist */
static int linear_search_in_dir_item(struct cpu_key *key,
struct reiserfs_dir_entry *de,
@@ -232,43 +245,50 @@ static int linear_search_in_dir_item(struct cpu_key *key,
deh += i;
for (; i >= 0; i--, deh--) {
+ /* hash value does not match, no need to check whole name */
if (GET_HASH_VALUE(deh_offset(deh)) !=
GET_HASH_VALUE(cpu_key_k_offset(key))) {
- // hash value does not match, no need to check whole name
return NAME_NOT_FOUND;
}
- /* mark, that this generation number is used */
+ /* mark that this generation number is used */
if (de->de_gen_number_bit_string)
set_bit(GET_GENERATION_NUMBER(deh_offset(deh)),
de->de_gen_number_bit_string);
- // calculate pointer to name and namelen
+ /* calculate pointer to name and namelen */
de->de_entry_num = i;
set_de_name_and_namelen(de);
+ /*
+ * de's de_name, de_namelen, de_recordlen are set.
+ * Fill the rest.
+ */
if ((retval =
reiserfs_match(de, name, namelen)) != NAME_NOT_FOUND) {
- // de's de_name, de_namelen, de_recordlen are set. Fill the rest:
- // key of pointed object
+ /* key of pointed object */
set_de_object_key(de);
store_de_entry_key(de);
- // retval can be NAME_FOUND or NAME_FOUND_INVISIBLE
+ /* retval can be NAME_FOUND or NAME_FOUND_INVISIBLE */
return retval;
}
}
if (GET_GENERATION_NUMBER(le_ih_k_offset(de->de_ih)) == 0)
- /* we have reached left most entry in the node. In common we
- have to go to the left neighbor, but if generation counter
- is 0 already, we know for sure, that there is no name with
- the same hash value */
- // FIXME: this work correctly only because hash value can not
- // be 0. Btw, in case of Yura's hash it is probably possible,
- // so, this is a bug
+ /*
+ * we have reached left most entry in the node. In common we
+ * have to go to the left neighbor, but if generation counter
+ * is 0 already, we know for sure, that there is no name with
+ * the same hash value
+ */
+ /*
+ * FIXME: this work correctly only because hash value can not
+ * be 0. Btw, in case of Yura's hash it is probably possible,
+ * so, this is a bug
+ */
return NAME_NOT_FOUND;
RFALSE(de->de_item_num,
@@ -277,8 +297,10 @@ static int linear_search_in_dir_item(struct cpu_key *key,
return GOTO_PREVIOUS_ITEM;
}
-// may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
-// FIXME: should add something like IOERROR
+/*
+ * may return NAME_FOUND, NAME_FOUND_INVISIBLE, NAME_NOT_FOUND
+ * FIXME: should add something like IOERROR
+ */
static int reiserfs_find_entry(struct inode *dir, const char *name, int namelen,
struct treepath *path_to_entry,
struct reiserfs_dir_entry *de)
@@ -307,13 +329,19 @@ static int reiserfs_find_entry(struct inode *dir, const char *name, int namelen,
retval =
linear_search_in_dir_item(&key_to_search, de, name,
namelen);
+ /*
+ * there is no need to scan directory anymore.
+ * Given entry found or does not exist
+ */
if (retval != GOTO_PREVIOUS_ITEM) {
- /* there is no need to scan directory anymore. Given entry found or does not exist */
path_to_entry->pos_in_item = de->de_entry_num;
return retval;
}
- /* there is left neighboring item of this directory and given entry can be there */
+ /*
+ * there is left neighboring item of this directory
+ * and given entry can be there
+ */
set_cpu_key_k_offset(&key_to_search,
le_ih_k_offset(de->de_ih) - 1);
pathrelse(path_to_entry);
@@ -347,8 +375,10 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
return ERR_PTR(-EACCES);
}
- /* Propagate the private flag so we know we're
- * in the priv tree */
+ /*
+ * Propagate the private flag so we know we're
+ * in the priv tree
+ */
if (IS_PRIVATE(dir))
inode->i_flags |= S_PRIVATE;
}
@@ -361,9 +391,9 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
}
/*
-** looks up the dentry of the parent directory for child.
-** taken from ext2_get_parent
-*/
+ * looks up the dentry of the parent directory for child.
+ * taken from ext2_get_parent
+ */
struct dentry *reiserfs_get_parent(struct dentry *child)
{
int retval;
@@ -406,8 +436,13 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
struct reiserfs_dir_entry de;
DECLARE_BITMAP(bit_string, MAX_GENERATION_NUMBER + 1);
int gen_number;
- char small_buf[32 + DEH_SIZE]; /* 48 bytes now and we avoid kmalloc
- if we create file with short name */
+
+ /*
+ * 48 bytes now and we avoid kmalloc if we
+ * create file with short name
+ */
+ char small_buf[32 + DEH_SIZE];
+
char *buffer;
int buflen, paste_size;
int retval;
@@ -439,21 +474,30 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
(get_inode_sd_version(dir) ==
STAT_DATA_V1) ? (DEH_SIZE + namelen) : buflen;
- /* fill buffer : directory entry head, name[, dir objectid | , stat data | ,stat data, dir objectid ] */
+ /*
+ * fill buffer : directory entry head, name[, dir objectid | ,
+ * stat data | ,stat data, dir objectid ]
+ */
deh = (struct reiserfs_de_head *)buffer;
deh->deh_location = 0; /* JDM Endian safe if 0 */
put_deh_offset(deh, cpu_key_k_offset(&entry_key));
deh->deh_state = 0; /* JDM Endian safe if 0 */
/* put key (ino analog) to de */
- deh->deh_dir_id = INODE_PKEY(inode)->k_dir_id; /* safe: k_dir_id is le */
- deh->deh_objectid = INODE_PKEY(inode)->k_objectid; /* safe: k_objectid is le */
+
+ /* safe: k_dir_id is le */
+ deh->deh_dir_id = INODE_PKEY(inode)->k_dir_id;
+ /* safe: k_objectid is le */
+ deh->deh_objectid = INODE_PKEY(inode)->k_objectid;
/* copy name */
memcpy((char *)(deh + 1), name, namelen);
/* padd by 0s to the 4 byte boundary */
padd_item((char *)(deh + 1), ROUND_UP(namelen), namelen);
- /* entry is ready to be pasted into tree, set 'visibility' and 'stat data in entry' attributes */
+ /*
+ * entry is ready to be pasted into tree, set 'visibility'
+ * and 'stat data in entry' attributes
+ */
mark_de_without_sd(deh);
visible ? mark_de_visible(deh) : mark_de_hidden(deh);
@@ -499,7 +543,8 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
/* update max-hash-collisions counter in reiserfs_sb_info */
PROC_INFO_MAX(th->t_super, max_hash_collisions, gen_number);
- if (gen_number != 0) { /* we need to re-search for the insertion point */
+ /* we need to re-search for the insertion point */
+ if (gen_number != 0) {
if (search_by_entry_key(dir->i_sb, &entry_key, &path, &de) !=
NAME_NOT_FOUND) {
reiserfs_warning(dir->i_sb, "vs-7032",
@@ -527,18 +572,19 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th,
dir->i_size += paste_size;
dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
if (!S_ISDIR(inode->i_mode) && visible)
- // reiserfs_mkdir or reiserfs_rename will do that by itself
+ /* reiserfs_mkdir or reiserfs_rename will do that by itself */
reiserfs_update_sd(th, dir);
reiserfs_check_path(&path);
return 0;
}
-/* quota utility function, call if you've had to abort after calling
-** new_inode_init, and have not called reiserfs_new_inode yet.
-** This should only be called on inodes that do not have stat data
-** inserted into the tree yet.
-*/
+/*
+ * quota utility function, call if you've had to abort after calling
+ * new_inode_init, and have not called reiserfs_new_inode yet.
+ * This should only be called on inodes that do not have stat data
+ * inserted into the tree yet.
+ */
static int drop_new_inode(struct inode *inode)
{
dquot_drop(inode);
@@ -548,18 +594,23 @@ static int drop_new_inode(struct inode *inode)
return 0;
}
-/* utility function that does setup for reiserfs_new_inode.
-** dquot_initialize needs lots of credits so it's better to have it
-** outside of a transaction, so we had to pull some bits of
-** reiserfs_new_inode out into this func.
-*/
+/*
+ * utility function that does setup for reiserfs_new_inode.
+ * dquot_initialize needs lots of credits so it's better to have it
+ * outside of a transaction, so we had to pull some bits of
+ * reiserfs_new_inode out into this func.
+ */
static int new_inode_init(struct inode *inode, struct inode *dir, umode_t mode)
{
- /* Make inode invalid - just in case we are going to drop it before
- * the initialization happens */
+ /*
+ * Make inode invalid - just in case we are going to drop it before
+ * the initialization happens
+ */
INODE_PKEY(inode)->k_objectid = 0;
- /* the quota init calls have to know who to charge the quota to, so
- ** we have to set uid and gid here
+
+ /*
+ * the quota init calls have to know who to charge the quota to, so
+ * we have to set uid and gid here
*/
inode_init_owner(inode, dir, mode);
dquot_initialize(inode);
@@ -571,7 +622,10 @@ static int reiserfs_create(struct inode *dir, struct dentry *dentry, umode_t mod
{
int retval;
struct inode *inode;
- /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ /*
+ * We need blocks for transaction + (user+group)*(quotas
+ * for new inode + update of quota for directory owner)
+ */
int jbegin_count =
JOURNAL_PER_BALANCE_CNT * 2 +
2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
@@ -644,7 +698,10 @@ static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode
struct inode *inode;
struct reiserfs_transaction_handle th;
struct reiserfs_security_handle security;
- /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ /*
+ * We need blocks for transaction + (user+group)*(quotas
+ * for new inode + update of quota for directory owner)
+ */
int jbegin_count =
JOURNAL_PER_BALANCE_CNT * 3 +
2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
@@ -685,7 +742,7 @@ static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode
inode->i_op = &reiserfs_special_inode_operations;
init_special_inode(inode, inode->i_mode, rdev);
- //FIXME: needed for block and char devices only
+ /* FIXME: needed for block and char devices only */
reiserfs_update_sd(&th, inode);
reiserfs_update_inode_transaction(inode);
@@ -721,7 +778,10 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
struct inode *inode;
struct reiserfs_transaction_handle th;
struct reiserfs_security_handle security;
- /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ /*
+ * We need blocks for transaction + (user+group)*(quotas
+ * for new inode + update of quota for directory owner)
+ */
int jbegin_count =
JOURNAL_PER_BALANCE_CNT * 3 +
2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
@@ -730,7 +790,10 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
dquot_initialize(dir);
#ifdef DISPLACE_NEW_PACKING_LOCALITIES
- /* set flag that new packing locality created and new blocks for the content * of that directory are not displaced yet */
+ /*
+ * set flag that new packing locality created and new blocks
+ * for the content of that directory are not displaced yet
+ */
REISERFS_I(dir)->new_packing_locality = 1;
#endif
mode = S_IFDIR | mode;
@@ -754,8 +817,9 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
goto out_failed;
}
- /* inc the link count now, so another writer doesn't overflow it while
- ** we sleep later on.
+ /*
+ * inc the link count now, so another writer doesn't overflow
+ * it while we sleep later on.
*/
INC_DIR_INODE_NLINK(dir)
@@ -774,7 +838,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
inode->i_op = &reiserfs_dir_inode_operations;
inode->i_fop = &reiserfs_dir_operations;
- // note, _this_ add_entry will not update dir's stat data
+ /* note, _this_ add_entry will not update dir's stat data */
retval =
reiserfs_add_entry(&th, dir, dentry->d_name.name,
dentry->d_name.len, inode, 1 /*visible */ );
@@ -790,7 +854,7 @@ static int reiserfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
iput(inode);
goto out_failed;
}
- // the above add_entry did not update dir's stat data
+ /* the above add_entry did not update dir's stat data */
reiserfs_update_sd(&th, dir);
unlock_new_inode(inode);
@@ -803,10 +867,11 @@ out_failed:
static inline int reiserfs_empty_dir(struct inode *inode)
{
- /* we can cheat because an old format dir cannot have
- ** EMPTY_DIR_SIZE, and a new format dir cannot have
- ** EMPTY_DIR_SIZE_V1. So, if the inode is either size,
- ** regardless of disk format version, the directory is empty.
+ /*
+ * we can cheat because an old format dir cannot have
+ * EMPTY_DIR_SIZE, and a new format dir cannot have
+ * EMPTY_DIR_SIZE_V1. So, if the inode is either size,
+ * regardless of disk format version, the directory is empty.
*/
if (inode->i_size != EMPTY_DIR_SIZE &&
inode->i_size != EMPTY_DIR_SIZE_V1) {
@@ -824,10 +889,12 @@ static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
INITIALIZE_PATH(path);
struct reiserfs_dir_entry de;
- /* we will be doing 2 balancings and update 2 stat data, we change quotas
- * of the owner of the directory and of the owner of the parent directory.
- * The quota structure is possibly deleted only on last iput => outside
- * of this transaction */
+ /*
+ * we will be doing 2 balancings and update 2 stat data, we
+ * change quotas of the owner of the directory and of the owner
+ * of the parent directory. The quota structure is possibly
+ * deleted only on last iput => outside of this transaction
+ */
jbegin_count =
JOURNAL_PER_BALANCE_CNT * 2 + 2 +
4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
@@ -856,8 +923,9 @@ static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
reiserfs_update_inode_transaction(dir);
if (de.de_objectid != inode->i_ino) {
- // FIXME: compare key of an object and a key found in the
- // entry
+ /*
+ * FIXME: compare key of an object and a key found in the entry
+ */
retval = -EIO;
goto end_rmdir;
}
@@ -895,9 +963,11 @@ static int reiserfs_rmdir(struct inode *dir, struct dentry *dentry)
return retval;
end_rmdir:
- /* we must release path, because we did not call
- reiserfs_cut_from_item, or reiserfs_cut_from_item does not
- release path if operation was not complete */
+ /*
+ * we must release path, because we did not call
+ * reiserfs_cut_from_item, or reiserfs_cut_from_item does not
+ * release path if operation was not complete
+ */
pathrelse(&path);
err = journal_end(&th, dir->i_sb, jbegin_count);
reiserfs_write_unlock(dir->i_sb);
@@ -918,10 +988,13 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
inode = dentry->d_inode;
- /* in this transaction we can be doing at max two balancings and update
- * two stat datas, we change quotas of the owner of the directory and of
- * the owner of the parent directory. The quota structure is possibly
- * deleted only on iput => outside of this transaction */
+ /*
+ * in this transaction we can be doing at max two balancings and
+ * update two stat datas, we change quotas of the owner of the
+ * directory and of the owner of the parent directory. The quota
+ * structure is possibly deleted only on iput => outside of
+ * this transaction
+ */
jbegin_count =
JOURNAL_PER_BALANCE_CNT * 2 + 2 +
4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
@@ -946,8 +1019,9 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
reiserfs_update_inode_transaction(dir);
if (de.de_objectid != inode->i_ino) {
- // FIXME: compare key of an object and a key found in the
- // entry
+ /*
+ * FIXME: compare key of an object and a key found in the entry
+ */
retval = -EIO;
goto end_unlink;
}
@@ -1011,7 +1085,10 @@ static int reiserfs_symlink(struct inode *parent_dir,
struct reiserfs_transaction_handle th;
struct reiserfs_security_handle security;
int mode = S_IFLNK | S_IRWXUGO;
- /* We need blocks for transaction + (user+group)*(quotas for new inode + update of quota for directory owner) */
+ /*
+ * We need blocks for transaction + (user+group)*(quotas for
+ * new inode + update of quota for directory owner)
+ */
int jbegin_count =
JOURNAL_PER_BALANCE_CNT * 3 +
2 * (REISERFS_QUOTA_INIT_BLOCKS(parent_dir->i_sb) +
@@ -1070,10 +1147,6 @@ static int reiserfs_symlink(struct inode *parent_dir,
inode->i_op = &reiserfs_symlink_inode_operations;
inode->i_mapping->a_ops = &reiserfs_address_space_operations;
- // must be sure this inode is written with this transaction
- //
- //reiserfs_update_sd (&th, inode, READ_BLOCKS);
-
retval = reiserfs_add_entry(&th, parent_dir, dentry->d_name.name,
dentry->d_name.len, inode, 1 /*visible */ );
if (retval) {
@@ -1102,7 +1175,10 @@ static int reiserfs_link(struct dentry *old_dentry, struct inode *dir,
int retval;
struct inode *inode = old_dentry->d_inode;
struct reiserfs_transaction_handle th;
- /* We need blocks for transaction + update of quotas for the owners of the directory */
+ /*
+ * We need blocks for transaction + update of quotas for
+ * the owners of the directory
+ */
int jbegin_count =
JOURNAL_PER_BALANCE_CNT * 3 +
2 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
@@ -1111,7 +1187,7 @@ static int reiserfs_link(struct dentry *old_dentry, struct inode *dir,
reiserfs_write_lock(dir->i_sb);
if (inode->i_nlink >= REISERFS_LINK_MAX) {
- //FIXME: sd_nlink is 32 bit for new files
+ /* FIXME: sd_nlink is 32 bit for new files */
reiserfs_write_unlock(dir->i_sb);
return -EMLINK;
}
@@ -1158,9 +1234,9 @@ static int de_still_valid(const char *name, int len,
{
struct reiserfs_dir_entry tmp = *de;
- // recalculate pointer to name and name length
+ /* recalculate pointer to name and name length */
set_de_name_and_namelen(&tmp);
- // FIXME: could check more
+ /* FIXME: could check more */
if (tmp.de_namelen != len || memcmp(name, de->de_name, len))
return 0;
return 1;
@@ -1217,14 +1293,16 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
unsigned long savelink = 1;
struct timespec ctime;
- /* three balancings: (1) old name removal, (2) new name insertion
- and (3) maybe "save" link insertion
- stat data updates: (1) old directory,
- (2) new directory and (3) maybe old object stat data (when it is
- directory) and (4) maybe stat data of object to which new entry
- pointed initially and (5) maybe block containing ".." of
- renamed directory
- quota updates: two parent directories */
+ /*
+ * three balancings: (1) old name removal, (2) new name insertion
+ * and (3) maybe "save" link insertion
+ * stat data updates: (1) old directory,
+ * (2) new directory and (3) maybe old object stat data (when it is
+ * directory) and (4) maybe stat data of object to which new entry
+ * pointed initially and (5) maybe block containing ".." of
+ * renamed directory
+ * quota updates: two parent directories
+ */
jbegin_count =
JOURNAL_PER_BALANCE_CNT * 3 + 5 +
4 * REISERFS_QUOTA_TRANS_BLOCKS(old_dir->i_sb);
@@ -1235,8 +1313,10 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
old_inode = old_dentry->d_inode;
new_dentry_inode = new_dentry->d_inode;
- // make sure, that oldname still exists and points to an object we
- // are going to rename
+ /*
+ * make sure that oldname still exists and points to an object we
+ * are going to rename
+ */
old_de.de_gen_number_bit_string = NULL;
reiserfs_write_lock(old_dir->i_sb);
retval =
@@ -1256,10 +1336,11 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
old_inode_mode = old_inode->i_mode;
if (S_ISDIR(old_inode_mode)) {
- // make sure, that directory being renamed has correct ".."
- // and that its new parent directory has not too many links
- // already
-
+ /*
+ * make sure that directory being renamed has correct ".."
+ * and that its new parent directory has not too many links
+ * already
+ */
if (new_dentry_inode) {
if (!reiserfs_empty_dir(new_dentry_inode)) {
reiserfs_write_unlock(old_dir->i_sb);
@@ -1267,8 +1348,9 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
}
- /* directory is renamed, its parent directory will be changed,
- ** so find ".." entry
+ /*
+ * directory is renamed, its parent directory will be changed,
+ * so find ".." entry
*/
dot_dot_de.de_gen_number_bit_string = NULL;
retval =
@@ -1311,8 +1393,9 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
reiserfs_update_inode_transaction(old_dir);
reiserfs_update_inode_transaction(new_dir);
- /* this makes it so an fsync on an open fd for the old name will
- ** commit the rename operation
+ /*
+ * this makes it so an fsync on an open fd for the old name will
+ * commit the rename operation
*/
reiserfs_update_inode_transaction(old_inode);
@@ -1320,7 +1403,10 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
reiserfs_update_inode_transaction(new_dentry_inode);
while (1) {
- // look for old name using corresponding entry key (found by reiserfs_find_entry)
+ /*
+ * look for old name using corresponding entry key
+ * (found by reiserfs_find_entry)
+ */
if ((retval =
search_by_entry_key(new_dir->i_sb, &old_de.de_entry_key,
&old_entry_path,
@@ -1335,14 +1421,18 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
reiserfs_prepare_for_journal(old_inode->i_sb, old_de.de_bh, 1);
- // look for new name by reiserfs_find_entry
+ /* look for new name by reiserfs_find_entry */
new_de.de_gen_number_bit_string = NULL;
retval =
reiserfs_find_entry(new_dir, new_dentry->d_name.name,
new_dentry->d_name.len, &new_entry_path,
&new_de);
- // reiserfs_add_entry should not return IO_ERROR, because it is called with essentially same parameters from
- // reiserfs_add_entry above, and we'll catch any i/o errors before we get here.
+ /*
+ * reiserfs_add_entry should not return IO_ERROR,
+ * because it is called with essentially same parameters from
+ * reiserfs_add_entry above, and we'll catch any i/o errors
+ * before we get here.
+ */
if (retval != NAME_FOUND_INVISIBLE && retval != NAME_FOUND) {
pathrelse(&new_entry_path);
pathrelse(&old_entry_path);
@@ -1370,22 +1460,26 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
copy_item_head(&dot_dot_ih,
tp_item_head(&dot_dot_entry_path));
- // node containing ".." gets into transaction
+ /* node containing ".." gets into transaction */
reiserfs_prepare_for_journal(old_inode->i_sb,
dot_dot_de.de_bh, 1);
}
- /* we should check seals here, not do
- this stuff, yes? Then, having
- gathered everything into RAM we
- should lock the buffers, yes? -Hans */
- /* probably. our rename needs to hold more
- ** than one path at once. The seals would
- ** have to be written to deal with multi-path
- ** issues -chris
+ /*
+ * we should check seals here, not do
+ * this stuff, yes? Then, having
+ * gathered everything into RAM we
+ * should lock the buffers, yes? -Hans
+ */
+ /*
+ * probably. our rename needs to hold more
+ * than one path at once. The seals would
+ * have to be written to deal with multi-path
+ * issues -chris
*/
- /* sanity checking before doing the rename - avoid races many
- ** of the above checks could have scheduled. We have to be
- ** sure our items haven't been shifted by another process.
+ /*
+ * sanity checking before doing the rename - avoid races many
+ * of the above checks could have scheduled. We have to be
+ * sure our items haven't been shifted by another process.
*/
if (item_moved(&new_entry_ih, &new_entry_path) ||
!entry_points_to_object(new_dentry->d_name.name,
@@ -1430,8 +1524,10 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
break;
}
- /* ok, all the changes can be done in one fell swoop when we
- have claimed all the buffers needed. */
+ /*
+ * ok, all the changes can be done in one fell swoop when we
+ * have claimed all the buffers needed.
+ */
mark_de_visible(new_de.de_deh + new_de.de_entry_num);
set_ino_in_dir_entry(&new_de, INODE_PKEY(old_inode));
@@ -1442,12 +1538,14 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
ctime = CURRENT_TIME_SEC;
old_dir->i_ctime = old_dir->i_mtime = ctime;
new_dir->i_ctime = new_dir->i_mtime = ctime;
- /* thanks to Alex Adriaanse <alex_a@caltech.edu> for patch which adds ctime update of
- renamed object */
+ /*
+ * thanks to Alex Adriaanse <alex_a@caltech.edu> for patch
+ * which adds ctime update of renamed object
+ */
old_inode->i_ctime = ctime;
if (new_dentry_inode) {
- // adjust link number of the victim
+ /* adjust link number of the victim */
if (S_ISDIR(new_dentry_inode->i_mode)) {
clear_nlink(new_dentry_inode);
} else {
@@ -1462,21 +1560,28 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
set_ino_in_dir_entry(&dot_dot_de, INODE_PKEY(new_dir));
journal_mark_dirty(&th, new_dir->i_sb, dot_dot_de.de_bh);
+ /*
+ * there (in new_dir) was no directory, so it got new link
+ * (".." of renamed directory)
+ */
if (!new_dentry_inode)
- /* there (in new_dir) was no directory, so it got new link
- (".." of renamed directory) */
INC_DIR_INODE_NLINK(new_dir);
/* old directory lost one link - ".. " of renamed directory */
DEC_DIR_INODE_NLINK(old_dir);
}
- // looks like in 2.3.99pre3 brelse is atomic. so we can use pathrelse
+ /*
+ * looks like in 2.3.99pre3 brelse is atomic.
+ * so we can use pathrelse
+ */
pathrelse(&new_entry_path);
pathrelse(&dot_dot_entry_path);
- // FIXME: this reiserfs_cut_from_item's return value may screw up
- // anybody, but it will panic if will not be able to find the
- // entry. This needs one more clean up
+ /*
+ * FIXME: this reiserfs_cut_from_item's return value may screw up
+ * anybody, but it will panic if will not be able to find the
+ * entry. This needs one more clean up
+ */
if (reiserfs_cut_from_item
(&th, &old_entry_path, &(old_de.de_entry_key), old_dir, NULL,
0) < 0)
@@ -1501,11 +1606,8 @@ static int reiserfs_rename(struct inode *old_dir, struct dentry *old_dentry,
return retval;
}
-/*
- * directories can handle most operations...
- */
+/* directories can handle most operations... */
const struct inode_operations reiserfs_dir_inode_operations = {
- //&reiserfs_dir_operations, /* default_file_ops */
.create = reiserfs_create,
.lookup = reiserfs_lookup,
.link = reiserfs_link,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 12:52:22 +0000