* Pereslavl-Zalessky Russia
*/
-/*
- * This file contains functions dealing with S+tree
- *
- * B_IS_IN_TREE
- * copy_item_head
- * comp_short_keys
- * comp_keys
- * comp_short_le_keys
- * le_key2cpu_key
- * comp_le_keys
- * bin_search
- * get_lkey
- * get_rkey
- * key_in_buffer
- * decrement_bcount
- * reiserfs_check_path
- * pathrelse_and_restore
- * pathrelse
- * search_by_key_reada
- * search_by_key
- * search_for_position_by_key
- * comp_items
- * prepare_for_direct_item
- * prepare_for_direntry_item
- * prepare_for_delete_or_cut
- * calc_deleted_bytes_number
- * init_tb_struct
- * padd_item
- * reiserfs_delete_item
- * reiserfs_delete_solid_item
- * reiserfs_delete_object
- * maybe_indirect_to_direct
- * indirect_to_direct_roll_back
- * reiserfs_cut_from_item
- * truncate_directory
- * reiserfs_do_truncate
- * reiserfs_paste_into_item
- * reiserfs_insert_item
- */
-
#include <linux/time.h>
#include <linux/string.h>
#include <linux/pagemap.h>
return (B_LEVEL(bh) != FREE_LEVEL);
}
-//
-// to gets item head in le form
-//
+/* to get item head in le form */
inline void copy_item_head(struct item_head *to,
const struct item_head *from)
{
memcpy(to, from, IH_SIZE);
}
-/* k1 is pointer to on-disk structure which is stored in little-endian
- form. k2 is pointer to cpu variable. For key of items of the same
- object this returns 0.
- Returns: -1 if key1 < key2
- 0 if key1 == key2
- 1 if key1 > key2 */
+/*
+ * k1 is pointer to on-disk structure which is stored in little-endian
+ * form. k2 is pointer to cpu variable. For key of items of the same
+ * object this returns 0.
+ * Returns: -1 if key1 < key2
+ * 0 if key1 == key2
+ * 1 if key1 > key2
+ */
inline int comp_short_keys(const struct reiserfs_key *le_key,
const struct cpu_key *cpu_key)
{
return 0;
}
-/* k1 is pointer to on-disk structure which is stored in little-endian
- form. k2 is pointer to cpu variable.
- Compare keys using all 4 key fields.
- Returns: -1 if key1 < key2 0
- if key1 = key2 1 if key1 > key2 */
+/*
+ * k1 is pointer to on-disk structure which is stored in little-endian
+ * form. k2 is pointer to cpu variable.
+ * Compare keys using all 4 key fields.
+ * Returns: -1 if key1 < key2 0
+ * if key1 = key2 1 if key1 > key2
+ */
static inline int comp_keys(const struct reiserfs_key *le_key,
const struct cpu_key *cpu_key)
{
to->on_disk_key.k_dir_id = le32_to_cpu(from->k_dir_id);
to->on_disk_key.k_objectid = le32_to_cpu(from->k_objectid);
- // find out version of the key
+ /* find out version of the key */
version = le_key_version(from);
to->version = version;
to->on_disk_key.k_offset = le_key_k_offset(version, from);
to->on_disk_key.k_type = le_key_k_type(version, from);
}
-// this does not say which one is bigger, it only returns 1 if keys
-// are not equal, 0 otherwise
+/*
+ * this does not say which one is bigger, it only returns 1 if keys
+ * are not equal, 0 otherwise
+ */
inline int comp_le_keys(const struct reiserfs_key *k1,
const struct reiserfs_key *k2)
{
* *pos = number of the searched element if found, else the *
* number of the first element that is larger than key. *
**************************************************************************/
-/* For those not familiar with binary search: lbound is the leftmost item that it
- could be, rbound the rightmost item that it could be. We examine the item
- halfway between lbound and rbound, and that tells us either that we can increase
- lbound, or decrease rbound, or that we have found it, or if lbound <= rbound that
- there are no possible items, and we have not found it. With each examination we
- cut the number of possible items it could be by one more than half rounded down,
- or we find it. */
+/*
+ * For those not familiar with binary search: lbound is the leftmost item
+ * that it could be, rbound the rightmost item that it could be. We examine
+ * the item halfway between lbound and rbound, and that tells us either
+ * that we can increase lbound, or decrease rbound, or that we have found it,
+ * or if lbound <= rbound that there are no possible items, and we have not
+ * found it. With each examination we cut the number of possible items it
+ * could be by one more than half rounded down, or we find it.
+ */
static inline int bin_search(const void *key, /* Key to search for. */
const void *base, /* First item in the array. */
int num, /* Number of items in the array. */
- int width, /* Item size in the array.
- searched. Lest the reader be
- confused, note that this is crafted
- as a general function, and when it
- is applied specifically to the array
- of item headers in a node, width
- is actually the item header size not
- the item size. */
+ /*
+ * Item size in the array. searched. Lest the
+ * reader be confused, note that this is crafted
+ * as a general function, and when it is applied
+ * specifically to the array of item headers in a
+ * node, width is actually the item header size
+ * not the item size.
+ */
+ int width,
int *pos /* Number of the searched for element. */
)
{
return ITEM_FOUND; /* Key found in the array. */
}
- /* bin_search did not find given key, it returns position of key,
- that is minimal and greater than the given one. */
+ /*
+ * bin_search did not find given key, it returns position of key,
+ * that is minimal and greater than the given one.
+ */
*pos = lbound;
return ITEM_NOT_FOUND;
}
__constant_cpu_to_le32(0xffffffff)},}
};
-/* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom
- of the path, and going upwards. We must check the path's validity at each step. If the key is not in
- the path, there is no delimiting key in the tree (buffer is first or last buffer in tree), and in this
- case we return a special key, either MIN_KEY or MAX_KEY. */
+/*
+ * Get delimiting key of the buffer by looking for it in the buffers in the
+ * path, starting from the bottom of the path, and going upwards. We must
+ * check the path's validity at each step. If the key is not in the path,
+ * there is no delimiting key in the tree (buffer is first or last buffer
+ * in tree), and in this case we return a special key, either MIN_KEY or
+ * MAX_KEY.
+ */
static inline const struct reiserfs_key *get_lkey(const struct treepath *chk_path,
const struct super_block *sb)
{
PATH_OFFSET_PBUFFER(chk_path,
path_offset + 1)->b_blocknr)
return &MAX_KEY;
- /* Return delimiting key if position in the parent is not equal to zero. */
+ /*
+ * Return delimiting key if position in the parent
+ * is not equal to zero.
+ */
if (position)
- return B_N_PDELIM_KEY(parent, position - 1);
+ return internal_key(parent, position - 1);
}
/* Return MIN_KEY if we are in the root of the buffer tree. */
if (PATH_OFFSET_PBUFFER(chk_path, FIRST_PATH_ELEMENT_OFFSET)->
path_offset)) >
B_NR_ITEMS(parent))
return &MIN_KEY;
- /* Check whether parent at the path really points to the child. */
+ /*
+ * Check whether parent at the path really points
+ * to the child.
+ */
if (B_N_CHILD_NUM(parent, position) !=
PATH_OFFSET_PBUFFER(chk_path,
path_offset + 1)->b_blocknr)
return &MIN_KEY;
- /* Return delimiting key if position in the parent is not the last one. */
+
+ /*
+ * Return delimiting key if position in the parent
+ * is not the last one.
+ */
if (position != B_NR_ITEMS(parent))
- return B_N_PDELIM_KEY(parent, position);
+ return internal_key(parent, position);
}
+
/* Return MAX_KEY if we are in the root of the buffer tree. */
if (PATH_OFFSET_PBUFFER(chk_path, FIRST_PATH_ELEMENT_OFFSET)->
b_blocknr == SB_ROOT_BLOCK(sb))
return &MIN_KEY;
}
-/* Check whether a key is contained in the tree rooted from a buffer at a path. */
-/* This works by looking at the left and right delimiting keys for the buffer in the last path_element in
- the path. These delimiting keys are stored at least one level above that buffer in the tree. If the
- buffer is the first or last node in the tree order then one of the delimiting keys may be absent, and in
- this case get_lkey and get_rkey return a special key which is MIN_KEY or MAX_KEY. */
-static inline int key_in_buffer(struct treepath *chk_path, /* Path which should be checked. */
- const struct cpu_key *key, /* Key which should be checked. */
+/*
+ * Check whether a key is contained in the tree rooted from a buffer at a path.
+ * This works by looking at the left and right delimiting keys for the buffer
+ * in the last path_element in the path. These delimiting keys are stored
+ * at least one level above that buffer in the tree. If the buffer is the
+ * first or last node in the tree order then one of the delimiting keys may
+ * be absent, and in this case get_lkey and get_rkey return a special key
+ * which is MIN_KEY or MAX_KEY.
+ */
+static inline int key_in_buffer(
+ /* Path which should be checked. */
+ struct treepath *chk_path,
+ /* Key which should be checked. */
+ const struct cpu_key *key,
struct super_block *sb
)
{
return 0;
}
-/* Drop the reference to each buffer in a path and restore
+/*
+ * Drop the reference to each buffer in a path and restore
* dirty bits clean when preparing the buffer for the log.
- * This version should only be called from fix_nodes() */
+ * This version should only be called from fix_nodes()
+ */
void pathrelse_and_restore(struct super_block *sb,
struct treepath *search_path)
{
}
ih = (struct item_head *)(buf + BLKH_SIZE) + nr - 1;
used_space = BLKH_SIZE + IH_SIZE * nr + (blocksize - ih_location(ih));
+
+ /* free space does not match to calculated amount of use space */
if (used_space != blocksize - blkh_free_space(blkh)) {
- /* free space does not match to calculated amount of use space */
reiserfs_warning(NULL, "reiserfs-5082",
"free space seems wrong: %z", bh);
return 0;
}
- // FIXME: it is_leaf will hit performance too much - we may have
- // return 1 here
+ /*
+ * FIXME: it is_leaf will hit performance too much - we may have
+ * return 1 here
+ */
/* check tables of item heads */
ih = (struct item_head *)(buf + BLKH_SIZE);
prev_location = ih_location(ih);
}
- // one may imagine much more checks
+ /* one may imagine many more checks */
return 1;
}
}
nr = blkh_nr_item(blkh);
+ /* for internal which is not root we might check min number of keys */
if (nr > (blocksize - BLKH_SIZE - DC_SIZE) / (KEY_SIZE + DC_SIZE)) {
- /* for internal which is not root we might check min number of keys */
reiserfs_warning(NULL, "reiserfs-5088",
"number of key seems wrong: %z", bh);
return 0;
"free space seems wrong: %z", bh);
return 0;
}
- // one may imagine much more checks
+
+ /* one may imagine many more checks */
return 1;
}
-// make sure that bh contains formatted node of reiserfs tree of
-// 'level'-th level
+/*
+ * make sure that bh contains formatted node of reiserfs tree of
+ * 'level'-th level
+ */
static int is_tree_node(struct buffer_head *bh, int level)
{
if (B_LEVEL(bh) != level) {
for (j = 0; j < i; j++) {
/*
* note, this needs attention if we are getting rid of the BKL
- * you have to make sure the prepared bit isn't set on this buffer
+ * you have to make sure the prepared bit isn't set on this
+ * buffer
*/
if (!buffer_uptodate(bh[j])) {
if (depth == -1)
return depth;
}
-/**************************************************************************
- * Algorithm SearchByKey *
- * look for item in the Disk S+Tree by its key *
- * Input: sb - super block *
- * key - pointer to the key to search *
- * Output: ITEM_FOUND, ITEM_NOT_FOUND or IO_ERROR *
- * search_path - path from the root to the needed leaf *
- **************************************************************************/
-
-/* This function fills up the path from the root to the leaf as it
- descends the tree looking for the key. It uses reiserfs_bread to
- try to find buffers in the cache given their block number. If it
- does not find them in the cache it reads them from disk. For each
- node search_by_key finds using reiserfs_bread it then uses
- bin_search to look through that node. bin_search will find the
- position of the block_number of the next node if it is looking
- through an internal node. If it is looking through a leaf node
- bin_search will find the position of the item which has key either
- equal to given key, or which is the maximal key less than the given
- key. search_by_key returns a path that must be checked for the
- correctness of the top of the path but need not be checked for the
- correctness of the bottom of the path */
-/* The function is NOT SCHEDULE-SAFE! */
-int search_by_key(struct super_block *sb, const struct cpu_key *key, /* Key to search. */
- struct treepath *search_path,/* This structure was
- allocated and initialized
- by the calling
- function. It is filled up
- by this function. */
- int stop_level /* How far down the tree to search. To
- stop at leaf level - set to
- DISK_LEAF_NODE_LEVEL */
- )
+/*
+ * This function fills up the path from the root to the leaf as it
+ * descends the tree looking for the key. It uses reiserfs_bread to
+ * try to find buffers in the cache given their block number. If it
+ * does not find them in the cache it reads them from disk. For each
+ * node search_by_key finds using reiserfs_bread it then uses
+ * bin_search to look through that node. bin_search will find the
+ * position of the block_number of the next node if it is looking
+ * through an internal node. If it is looking through a leaf node
+ * bin_search will find the position of the item which has key either
+ * equal to given key, or which is the maximal key less than the given
+ * key. search_by_key returns a path that must be checked for the
+ * correctness of the top of the path but need not be checked for the
+ * correctness of the bottom of the path
+ */
+/*
+ * search_by_key - search for key (and item) in stree
+ * @sb: superblock
+ * @key: pointer to key to search for
+ * @search_path: Allocated and initialized struct treepath; Returned filled
+ * on success.
+ * @stop_level: How far down the tree to search, Use DISK_LEAF_NODE_LEVEL to
+ * stop at leaf level.
+ *
+ * The function is NOT SCHEDULE-SAFE!
+ */
+int search_by_key(struct super_block *sb, const struct cpu_key *key,
+ struct treepath *search_path, int stop_level)
{
b_blocknr_t block_number;
int expected_level;
PROC_INFO_INC(sb, search_by_key);
- /* As we add each node to a path we increase its count. This means that
- we must be careful to release all nodes in a path before we either
- discard the path struct or re-use the path struct, as we do here. */
+ /*
+ * As we add each node to a path we increase its count. This means
+ * that we must be careful to release all nodes in a path before we
+ * either discard the path struct or re-use the path struct, as we
+ * do here.
+ */
pathrelse(search_path);
right_neighbor_of_leaf_node = 0;
- /* With each iteration of this loop we search through the items in the
- current node, and calculate the next current node(next path element)
- for the next iteration of this loop.. */
+ /*
+ * With each iteration of this loop we search through the items in the
+ * current node, and calculate the next current node(next path element)
+ * for the next iteration of this loop..
+ */
block_number = SB_ROOT_BLOCK(sb);
expected_level = -1;
while (1) {
++search_path->path_length);
fs_gen = get_generation(sb);
- /* Read the next tree node, and set the last element in the path to
- have a pointer to it. */
+ /*
+ * Read the next tree node, and set the last element
+ * in the path to have a pointer to it.
+ */
if ((bh = last_element->pe_buffer =
sb_getblk(sb, block_number))) {
expected_level = SB_TREE_HEIGHT(sb);
expected_level--;
- /* It is possible that schedule occurred. We must check whether the key
- to search is still in the tree rooted from the current buffer. If
- not then repeat search from the root. */
+ /*
+ * It is possible that schedule occurred. We must check
+ * whether the key to search is still in the tree rooted
+ * from the current buffer. If not then repeat search
+ * from the root.
+ */
if (fs_changed(fs_gen, sb) &&
(!B_IS_IN_TREE(bh) ||
B_LEVEL(bh) != expected_level ||
sbk_restarted[expected_level - 1]);
pathrelse(search_path);
- /* Get the root block number so that we can repeat the search
- starting from the root. */
+ /*
+ * Get the root block number so that we can
+ * repeat the search starting from the root.
+ */
block_number = SB_ROOT_BLOCK(sb);
expected_level = -1;
right_neighbor_of_leaf_node = 0;
continue;
}
- /* only check that the key is in the buffer if key is not
- equal to the MAX_KEY. Latter case is only possible in
- "finish_unfinished()" processing during mount. */
+ /*
+ * only check that the key is in the buffer if key is not
+ * equal to the MAX_KEY. Latter case is only possible in
+ * "finish_unfinished()" processing during mount.
+ */
RFALSE(comp_keys(&MAX_KEY, key) &&
!key_in_buffer(search_path, key, sb),
"PAP-5130: key is not in the buffer");
}
#endif
- // make sure, that the node contents look like a node of
- // certain level
+ /*
+ * make sure, that the node contents look like a node of
+ * certain level
+ */
if (!is_tree_node(bh, expected_level)) {
reiserfs_error(sb, "vs-5150",
"invalid format found in block %ld. "
"vs-5152: tree level (%d) is less than stop level (%d)",
node_level, stop_level);
- retval = bin_search(key, B_N_PITEM_HEAD(bh, 0),
+ retval = bin_search(key, item_head(bh, 0),
B_NR_ITEMS(bh),
(node_level ==
DISK_LEAF_NODE_LEVEL) ? IH_SIZE :
}
/* we are not in the stop level */
+ /*
+ * item has been found, so we choose the pointer which
+ * is to the right of the found one
+ */
if (retval == ITEM_FOUND)
- /* item has been found, so we choose the pointer which is to the right of the found one */
last_element->pe_position++;
- /* if item was not found we choose the position which is to
- the left of the found item. This requires no code,
- bin_search did it already. */
+ /*
+ * if item was not found we choose the position which is to
+ * the left of the found item. This requires no code,
+ * bin_search did it already.
+ */
- /* So we have chosen a position in the current node which is
- an internal node. Now we calculate child block number by
- position in the node. */
+ /*
+ * So we have chosen a position in the current node which is
+ * an internal node. Now we calculate child block number by
+ * position in the node.
+ */
block_number =
B_N_CHILD_NUM(bh, last_element->pe_position);
- /* if we are going to read leaf nodes, try for read ahead as well */
+ /*
+ * if we are going to read leaf nodes, try for read
+ * ahead as well
+ */
if ((search_path->reada & PATH_READA) &&
node_level == DISK_LEAF_NODE_LEVEL + 1) {
int pos = last_element->pe_position;
/*
* check to make sure we're in the same object
*/
- le_key = B_N_PDELIM_KEY(bh, pos);
+ le_key = internal_key(bh, pos);
if (le32_to_cpu(le_key->k_objectid) !=
key->on_disk_key.k_objectid) {
break;
}
}
-/* Form the path to an item and position in this item which contains
- file byte defined by key. If there is no such item
- corresponding to the key, we point the path to the item with
- maximal key less than key, and *pos_in_item is set to one
- past the last entry/byte in the item. If searching for entry in a
- directory item, and it is not found, *pos_in_item is set to one
- entry more than the entry with maximal key which is less than the
- sought key.
-
- Note that if there is no entry in this same node which is one more,
- then we point to an imaginary entry. for direct items, the
- position is in units of bytes, for indirect items the position is
- in units of blocknr entries, for directory items the position is in
- units of directory entries. */
-
+/*
+ * Form the path to an item and position in this item which contains
+ * file byte defined by key. If there is no such item
+ * corresponding to the key, we point the path to the item with
+ * maximal key less than key, and *pos_in_item is set to one
+ * past the last entry/byte in the item. If searching for entry in a
+ * directory item, and it is not found, *pos_in_item is set to one
+ * entry more than the entry with maximal key which is less than the
+ * sought key.
+ *
+ * Note that if there is no entry in this same node which is one more,
+ * then we point to an imaginary entry. for direct items, the
+ * position is in units of bytes, for indirect items the position is
+ * in units of blocknr entries, for directory items the position is in
+ * units of directory entries.
+ */
/* The function is NOT SCHEDULE-SAFE! */
-int search_for_position_by_key(struct super_block *sb, /* Pointer to the super block. */
- const struct cpu_key *p_cpu_key, /* Key to search (cpu variable) */
- struct treepath *search_path /* Filled up by this function. */
- )
+int search_for_position_by_key(struct super_block *sb,
+ /* Key to search (cpu variable) */
+ const struct cpu_key *p_cpu_key,
+ /* Filled up by this function. */
+ struct treepath *search_path)
{
struct item_head *p_le_ih; /* pointer to on-disk structure */
int blk_size;
if (retval == ITEM_FOUND) {
RFALSE(!ih_item_len
- (B_N_PITEM_HEAD
+ (item_head
(PATH_PLAST_BUFFER(search_path),
PATH_LAST_POSITION(search_path))),
"PAP-5165: item length equals zero");
/* Item is not found. Set path to the previous item. */
p_le_ih =
- B_N_PITEM_HEAD(PATH_PLAST_BUFFER(search_path),
+ item_head(PATH_PLAST_BUFFER(search_path),
--PATH_LAST_POSITION(search_path));
blk_size = sb->s_blocksize;
if (comp_short_keys(&(p_le_ih->ih_key), p_cpu_key)) {
return FILE_NOT_FOUND;
}
- // FIXME: quite ugly this far
+
+ /* FIXME: quite ugly this far */
item_offset = le_ih_k_offset(p_le_ih);
offset = cpu_key_k_offset(p_cpu_key);
return POSITION_FOUND;
}
- /* Needed byte is not contained in the item pointed to by the
- path. Set pos_in_item out of the item. */
+ /*
+ * Needed byte is not contained in the item pointed to by the
+ * path. Set pos_in_item out of the item.
+ */
if (is_indirect_le_ih(p_le_ih))
pos_in_item(search_path) =
ih_item_len(p_le_ih) / UNFM_P_SIZE;
return 1;
/* we need only to know, whether it is the same item */
- ih = get_ih(path);
+ ih = tp_item_head(path);
return memcmp(stored_ih, ih, IH_SIZE);
}
-/* unformatted nodes are not logged anymore, ever. This is safe
-** now
-*/
+/* unformatted nodes are not logged anymore, ever. This is safe now */
#define held_by_others(bh) (atomic_read(&(bh)->b_count) > 1)
-// block can not be forgotten as it is in I/O or held by someone
+/* block can not be forgotten as it is in I/O or held by someone */
#define block_in_use(bh) (buffer_locked(bh) || (held_by_others(bh)))
-// prepare for delete or cut of direct item
+/* prepare for delete or cut of direct item */
static inline int prepare_for_direct_item(struct treepath *path,
struct item_head *le_ih,
struct inode *inode,
*cut_size = -(IH_SIZE + ih_item_len(le_ih));
return M_DELETE;
}
- // new file gets truncated
+ /* new file gets truncated */
if (get_inode_item_key_version(inode) == KEY_FORMAT_3_6) {
- //
round_len = ROUND_UP(new_file_length);
/* this was new_file_length < le_ih ... */
if (round_len < le_ih_k_offset(le_ih)) {
return M_CUT; /* Cut from this item. */
}
- // old file: items may have any length
+ /* old file: items may have any length */
if (new_file_length < le_ih_k_offset(le_ih)) {
*cut_size = -(IH_SIZE + ih_item_len(le_ih));
return M_DELETE; /* Delete this item. */
}
+
/* Calculate first position and size for cutting from item. */
*cut_size = -(ih_item_len(le_ih) -
(pos_in_item(path) =
RFALSE(ih_entry_count(le_ih) != 2,
"PAP-5220: incorrect empty directory item (%h)", le_ih);
*cut_size = -(IH_SIZE + ih_item_len(le_ih));
- return M_DELETE; /* Delete the directory item containing "." and ".." entry. */
+ /* Delete the directory item containing "." and ".." entry. */
+ return M_DELETE;
}
if (ih_entry_count(le_ih) == 1) {
- /* Delete the directory item such as there is one record only
- in this item */
+ /*
+ * Delete the directory item such as there is one record only
+ * in this item
+ */
*cut_size = -(IH_SIZE + ih_item_len(le_ih));
return M_DELETE;
}
#define JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD (2 * JOURNAL_PER_BALANCE_CNT + 1)
-/* If the path points to a directory or direct item, calculate mode and the size cut, for balance.
- If the path points to an indirect item, remove some number of its unformatted nodes.
- In case of file truncate calculate whether this item must be deleted/truncated or last
- unformatted node of this item will be converted to a direct item.
- This function returns a determination of what balance mode the calling function should employ. */
-static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, struct inode *inode, struct treepath *path, const struct cpu_key *item_key, int *removed, /* Number of unformatted nodes which were removed
- from end of the file. */
- int *cut_size, unsigned long long new_file_length /* MAX_KEY_OFFSET in case of delete. */
+/*
+ * If the path points to a directory or direct item, calculate mode
+ * and the size cut, for balance.
+ * If the path points to an indirect item, remove some number of its
+ * unformatted nodes.
+ * In case of file truncate calculate whether this item must be
+ * deleted/truncated or last unformatted node of this item will be
+ * converted to a direct item.
+ * This function returns a determination of what balance mode the
+ * calling function should employ.
+ */
+static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th,
+ struct inode *inode,
+ struct treepath *path,
+ const struct cpu_key *item_key,
+ /*
+ * Number of unformatted nodes
+ * which were removed from end
+ * of the file.
+ */
+ int *removed,
+ int *cut_size,
+ /* MAX_KEY_OFFSET in case of delete. */
+ unsigned long long new_file_length
)
{
struct super_block *sb = inode->i_sb;
- struct item_head *p_le_ih = PATH_PITEM_HEAD(path);
+ struct item_head *p_le_ih = tp_item_head(path);
struct buffer_head *bh = PATH_PLAST_BUFFER(path);
BUG_ON(!th->t_trans_id);
int pos = 0;
if ( new_file_length == max_reiserfs_offset (inode) ) {
- /* prepare_for_delete_or_cut() is called by
- * reiserfs_delete_item() */
+ /*
+ * prepare_for_delete_or_cut() is called by
+ * reiserfs_delete_item()
+ */
new_file_length = 0;
delete = 1;
}
need_re_search = 0;
*cut_size = 0;
bh = PATH_PLAST_BUFFER(path);
- copy_item_head(&s_ih, PATH_PITEM_HEAD(path));
+ copy_item_head(&s_ih, tp_item_head(path));
pos = I_UNFM_NUM(&s_ih);
while (le_ih_k_offset (&s_ih) + (pos - 1) * blk_size > new_file_length) {
__le32 *unfm;
__u32 block;
- /* Each unformatted block deletion may involve one additional
- * bitmap block into the transaction, thereby the initial
- * journal space reservation might not be enough. */
+ /*
+ * Each unformatted block deletion may involve
+ * one additional bitmap block into the transaction,
+ * thereby the initial journal space reservation
+ * might not be enough.
+ */
if (!delete && (*cut_size) != 0 &&
reiserfs_transaction_free_space(th) < JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD)
break;
- unfm = (__le32 *)B_I_PITEM(bh, &s_ih) + pos - 1;
+ unfm = (__le32 *)ih_item_body(bh, &s_ih) + pos - 1;
block = get_block_num(unfm, 0);
if (block != 0) {
break;
}
}
- /* a trick. If the buffer has been logged, this will do nothing. If
- ** we've broken the loop without logging it, it will restore the
- ** buffer */
+ /*
+ * a trick. If the buffer has been logged, this will
+ * do nothing. If we've broken the loop without logging
+ * it, it will restore the buffer
+ */
reiserfs_restore_prepared_buffer(sb, bh);
} while (need_re_search &&
search_for_position_by_key(sb, item_key, path) == POSITION_FOUND);
pos_in_item(path) = pos * UNFM_P_SIZE;
if (*cut_size == 0) {
- /* Nothing were cut. maybe convert last unformatted node to the
- * direct item? */
+ /*
+ * Nothing was cut. maybe convert last unformatted node to the
+ * direct item?
+ */
result = M_CONVERT;
}
return result;
static int calc_deleted_bytes_number(struct tree_balance *tb, char mode)
{
int del_size;
- struct item_head *p_le_ih = PATH_PITEM_HEAD(tb->tb_path);
+ struct item_head *p_le_ih = tp_item_head(tb->tb_path);
if (is_statdata_le_ih(p_le_ih))
return 0;
(mode ==
M_DELETE) ? ih_item_len(p_le_ih) : -tb->insert_size[0];
if (is_direntry_le_ih(p_le_ih)) {
- /* return EMPTY_DIR_SIZE; We delete emty directoris only.
- * we can't use EMPTY_DIR_SIZE, as old format dirs have a different
- * empty size. ick. FIXME, is this right? */
+ /*
+ * return EMPTY_DIR_SIZE; We delete emty directories only.
+ * we can't use EMPTY_DIR_SIZE, as old format dirs have a
+ * different empty size. ick. FIXME, is this right?
+ */
return del_size;
}
}
#endif
-/* Delete object item.
+/*
+ * Delete object item.
* th - active transaction handle
* path - path to the deleted item
* item_key - key to search for the deleted item
RFALSE(mode != M_DELETE, "PAP-5320: mode must be M_DELETE");
- copy_item_head(&s_ih, PATH_PITEM_HEAD(path));
+ copy_item_head(&s_ih, tp_item_head(path));
s_del_balance.insert_size[0] = del_size;
ret_value = fix_nodes(M_DELETE, &s_del_balance, NULL, NULL);
PROC_INFO_INC(sb, delete_item_restarted);
- // file system changed, repeat search
+ /* file system changed, repeat search */
ret_value =
search_for_position_by_key(sb, item_key, path);
if (ret_value == IO_ERROR)
unfix_nodes(&s_del_balance);
return 0;
}
- // reiserfs_delete_item returns item length when success
+
+ /* reiserfs_delete_item returns item length when success */
ret_value = calc_deleted_bytes_number(&s_del_balance, M_DELETE);
- q_ih = get_ih(path);
+ q_ih = tp_item_head(path);
quota_cut_bytes = ih_item_len(q_ih);
- /* hack so the quota code doesn't have to guess if the file
- ** has a tail. On tail insert, we allocate quota for 1 unformatted node.
- ** We test the offset because the tail might have been
- ** split into multiple items, and we only want to decrement for
- ** the unfm node once
+ /*
+ * hack so the quota code doesn't have to guess if the file has a
+ * tail. On tail insert, we allocate quota for 1 unformatted node.
+ * We test the offset because the tail might have been
+ * split into multiple items, and we only want to decrement for
+ * the unfm node once
*/
if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(q_ih)) {
if ((le_ih_k_offset(q_ih) & (sb->s_blocksize - 1)) == 1) {
int off;
char *data;
- /* We are in direct2indirect conversion, so move tail contents
- to the unformatted node */
- /* note, we do the copy before preparing the buffer because we
- ** don't care about the contents of the unformatted node yet.
- ** the only thing we really care about is the direct item's data
- ** is in the unformatted node.
- **
- ** Otherwise, we would have to call reiserfs_prepare_for_journal on
- ** the unformatted node, which might schedule, meaning we'd have to
- ** loop all the way back up to the start of the while loop.
- **
- ** The unformatted node must be dirtied later on. We can't be
- ** sure here if the entire tail has been deleted yet.
- **
- ** un_bh is from the page cache (all unformatted nodes are
- ** from the page cache) and might be a highmem page. So, we
- ** can't use un_bh->b_data.
- ** -clm
+ /*
+ * We are in direct2indirect conversion, so move tail contents
+ * to the unformatted node
+ */
+ /*
+ * note, we do the copy before preparing the buffer because we
+ * don't care about the contents of the unformatted node yet.
+ * the only thing we really care about is the direct item's
+ * data is in the unformatted node.
+ *
+ * Otherwise, we would have to call
+ * reiserfs_prepare_for_journal on the unformatted node,
+ * which might schedule, meaning we'd have to loop all the
+ * way back up to the start of the while loop.
+ *
+ * The unformatted node must be dirtied later on. We can't be
+ * sure here if the entire tail has been deleted yet.
+ *
+ * un_bh is from the page cache (all unformatted nodes are
+ * from the page cache) and might be a highmem page. So, we
+ * can't use un_bh->b_data.
+ * -clm
*/
data = kmap_atomic(un_bh->b_page);
off = ((le_ih_k_offset(&s_ih) - 1) & (PAGE_CACHE_SIZE - 1));
memcpy(data + off,
- B_I_PITEM(PATH_PLAST_BUFFER(path), &s_ih),
+ ih_item_body(PATH_PLAST_BUFFER(path), &s_ih),
ret_value);
kunmap_atomic(data);
}
+
/* Perform balancing after all resources have been collected at once. */
do_balance(&s_del_balance, NULL, NULL, M_DELETE);
return ret_value;
}
-/* Summary Of Mechanisms For Handling Collisions Between Processes:
-
- deletion of the body of the object is performed by iput(), with the
- result that if multiple processes are operating on a file, the
- deletion of the body of the file is deferred until the last process
- that has an open inode performs its iput().
-
- writes and truncates are protected from collisions by use of
- semaphores.
-
- creates, linking, and mknod are protected from collisions with other
- processes by making the reiserfs_add_entry() the last step in the
- creation, and then rolling back all changes if there was a collision.
- - Hans
+/*
+ * Summary Of Mechanisms For Handling Collisions Between Processes:
+ *
+ * deletion of the body of the object is performed by iput(), with the
+ * result that if multiple processes are operating on a file, the
+ * deletion of the body of the file is deferred until the last process
+ * that has an open inode performs its iput().
+ *
+ * writes and truncates are protected from collisions by use of
+ * semaphores.
+ *
+ * creates, linking, and mknod are protected from collisions with other
+ * processes by making the reiserfs_add_entry() the last step in the
+ * creation, and then rolling back all changes if there was a collision.
+ * - Hans
*/
/* this deletes item which never gets split */
}
if (retval != ITEM_FOUND) {
pathrelse(&path);
- // No need for a warning, if there is just no free space to insert '..' item into the newly-created subdir
+ /*
+ * No need for a warning, if there is just no free
+ * space to insert '..' item into the
+ * newly-created subdir
+ */
if (!
((unsigned long long)
GET_HASH_VALUE(le_key_k_offset
}
if (!tb_init) {
tb_init = 1;
- item_len = ih_item_len(PATH_PITEM_HEAD(&path));
+ item_len = ih_item_len(tp_item_head(&path));
init_tb_struct(th, &tb, th->t_super, &path,
-(IH_SIZE + item_len));
}
- quota_cut_bytes = ih_item_len(PATH_PITEM_HEAD(&path));
+ quota_cut_bytes = ih_item_len(tp_item_head(&path));
retval = fix_nodes(M_DELETE, &tb, NULL, NULL);
if (retval == REPEAT_SEARCH) {
if (retval == CARRY_ON) {
do_balance(&tb, NULL, NULL, M_DELETE);
- if (inode) { /* Should we count quota for item? (we don't count quotas for save-links) */
+ /*
+ * Should we count quota for item? (we don't
+ * count quotas for save-links)
+ */
+ if (inode) {
int depth;
#ifdef REISERQUOTA_DEBUG
reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE,
}
break;
}
- // IO_ERROR, NO_DISK_SPACE, etc
+
+ /* IO_ERROR, NO_DISK_SPACE, etc */
reiserfs_warning(th->t_super, "vs-5360",
"could not delete %K due to fix_nodes failure",
&cpu_key);
do {
next = bh->b_this_page;
- /* we want to unmap the buffers that contain the tail, and
- ** all the buffers after it (since the tail must be at the
- ** end of the file). We don't want to unmap file data
- ** before the tail, since it might be dirty and waiting to
- ** reach disk
+ /*
+ * we want to unmap the buffers that contain
+ * the tail, and all the buffers after it
+ * (since the tail must be at the end of the
+ * file). We don't want to unmap file data
+ * before the tail, since it might be dirty
+ * and waiting to reach disk
*/
cur_index += bh->b_size;
if (cur_index > tail_index) {
BUG_ON(!th->t_trans_id);
BUG_ON(new_file_size != inode->i_size);
- /* the page being sent in could be NULL if there was an i/o error
- ** reading in the last block. The user will hit problems trying to
- ** read the file, but for now we just skip the indirect2direct
+ /*
+ * the page being sent in could be NULL if there was an i/o error
+ * reading in the last block. The user will hit problems trying to
+ * read the file, but for now we just skip the indirect2direct
*/
if (atomic_read(&inode->i_count) > 1 ||
!tail_has_to_be_packed(inode) ||
pathrelse(path);
return cut_bytes;
}
+
/* Perform the conversion to a direct_item. */
- /* return indirect_to_direct(inode, path, item_key,
- new_file_size, mode); */
return indirect2direct(th, inode, page, path, item_key,
new_file_size, mode);
}
-/* we did indirect_to_direct conversion. And we have inserted direct
- item successesfully, but there were no disk space to cut unfm
- pointer being converted. Therefore we have to delete inserted
- direct item(s) */
+/*
+ * we did indirect_to_direct conversion. And we have inserted direct
+ * item successesfully, but there were no disk space to cut unfm
+ * pointer being converted. Therefore we have to delete inserted
+ * direct item(s)
+ */
static void indirect_to_direct_roll_back(struct reiserfs_transaction_handle *th,
struct inode *inode, struct treepath *path)
{
int removed;
BUG_ON(!th->t_trans_id);
- make_cpu_key(&tail_key, inode, inode->i_size + 1, TYPE_DIRECT, 4); // !!!!
+ make_cpu_key(&tail_key, inode, inode->i_size + 1, TYPE_DIRECT, 4);
tail_key.key_length = 4;
tail_len =
reiserfs_panic(inode->i_sb, "vs-5615",
"found invalid item");
RFALSE(path->pos_in_item !=
- ih_item_len(PATH_PITEM_HEAD(path)) - 1,
+ ih_item_len(tp_item_head(path)) - 1,
"vs-5616: appended bytes found");
PATH_LAST_POSITION(path)--;
reiserfs_warning(inode->i_sb, "reiserfs-5091", "indirect_to_direct "
"conversion has been rolled back due to "
"lack of disk space");
- //mark_file_without_tail (inode);
mark_inode_dirty(inode);
}
struct page *page, loff_t new_file_size)
{
struct super_block *sb = inode->i_sb;
- /* Every function which is going to call do_balance must first
- create a tree_balance structure. Then it must fill up this
- structure by using the init_tb_struct and fix_nodes functions.
- After that we can make tree balancing. */
+ /*
+ * Every function which is going to call do_balance must first
+ * create a tree_balance structure. Then it must fill up this
+ * structure by using the init_tb_struct and fix_nodes functions.
+ * After that we can make tree balancing.
+ */
struct tree_balance s_cut_balance;
struct item_head *p_le_ih;
- int cut_size = 0, /* Amount to be cut. */
- ret_value = CARRY_ON, removed = 0, /* Number of the removed unformatted nodes. */
- is_inode_locked = 0;
+ int cut_size = 0; /* Amount to be cut. */
+ int ret_value = CARRY_ON;
+ int removed = 0; /* Number of the removed unformatted nodes. */
+ int is_inode_locked = 0;
char mode; /* Mode of the balance. */
int retval2 = -1;
int quota_cut_bytes;
init_tb_struct(th, &s_cut_balance, inode->i_sb, path,
cut_size);
- /* Repeat this loop until we either cut the item without needing
- to balance, or we fix_nodes without schedule occurring */
+ /*
+ * Repeat this loop until we either cut the item without needing
+ * to balance, or we fix_nodes without schedule occurring
+ */
while (1) {
- /* Determine the balance mode, position of the first byte to
- be cut, and size to be cut. In case of the indirect item
- free unformatted nodes which are pointed to by the cut
- pointers. */
+ /*
+ * Determine the balance mode, position of the first byte to
+ * be cut, and size to be cut. In case of the indirect item
+ * free unformatted nodes which are pointed to by the cut
+ * pointers.
+ */
mode =
prepare_for_delete_or_cut(th, inode, path,
item_key, &removed,
&cut_size, new_file_size);
if (mode == M_CONVERT) {
- /* convert last unformatted node to direct item or leave
- tail in the unformatted node */
+ /*
+ * convert last unformatted node to direct item or
+ * leave tail in the unformatted node
+ */
RFALSE(ret_value != CARRY_ON,
"PAP-5570: can not convert twice");
is_inode_locked = 1;
- /* removing of last unformatted node will change value we
- have to return to truncate. Save it */
+ /*
+ * removing of last unformatted node will
+ * change value we have to return to truncate.
+ * Save it
+ */
retval2 = ret_value;
- /*retval2 = sb->s_blocksize - (new_file_size & (sb->s_blocksize - 1)); */
- /* So, we have performed the first part of the conversion:
- inserting the new direct item. Now we are removing the
- last unformatted node pointer. Set key to search for
- it. */
+ /*
+ * So, we have performed the first part of the
+ * conversion:
+ * inserting the new direct item. Now we are
+ * removing the last unformatted node pointer.
+ * Set key to search for it.
+ */
set_cpu_key_k_type(item_key, TYPE_INDIRECT);
item_key->key_length = 4;
new_file_size -=
return (ret_value == IO_ERROR) ? -EIO : -ENOENT;
} /* while */
- // check fix_nodes results (IO_ERROR or NO_DISK_SPACE)
+ /* check fix_nodes results (IO_ERROR or NO_DISK_SPACE) */
if (ret_value != CARRY_ON) {
if (is_inode_locked) {
- // FIXME: this seems to be not needed: we are always able
- // to cut item
+ /*
+ * FIXME: this seems to be not needed: we are always
+ * able to cut item
+ */
indirect_to_direct_roll_back(th, inode, path);
}
if (ret_value == NO_DISK_SPACE)
/* Calculate number of bytes that need to be cut from the item. */
quota_cut_bytes =
(mode ==
- M_DELETE) ? ih_item_len(get_ih(path)) : -s_cut_balance.
+ M_DELETE) ? ih_item_len(tp_item_head(path)) : -s_cut_balance.
insert_size[0];
if (retval2 == -1)
ret_value = calc_deleted_bytes_number(&s_cut_balance, mode);
else
ret_value = retval2;
- /* For direct items, we only change the quota when deleting the last
- ** item.
+ /*
+ * For direct items, we only change the quota when deleting the last
+ * item.
*/
- p_le_ih = PATH_PITEM_HEAD(s_cut_balance.tb_path);
+ p_le_ih = tp_item_head(s_cut_balance.tb_path);
if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(p_le_ih)) {
if (mode == M_DELETE &&
(le_ih_k_offset(p_le_ih) & (sb->s_blocksize - 1)) ==
1) {
- // FIXME: this is to keep 3.5 happy
+ /* FIXME: this is to keep 3.5 happy */
REISERFS_I(inode)->i_first_direct_byte = U32_MAX;
quota_cut_bytes = sb->s_blocksize + UNFM_P_SIZE;
} else {
#ifdef CONFIG_REISERFS_CHECK
if (is_inode_locked) {
struct item_head *le_ih =
- PATH_PITEM_HEAD(s_cut_balance.tb_path);
- /* we are going to complete indirect2direct conversion. Make
- sure, that we exactly remove last unformatted node pointer
- of the item */
+ tp_item_head(s_cut_balance.tb_path);
+ /*
+ * we are going to complete indirect2direct conversion. Make
+ * sure, that we exactly remove last unformatted node pointer
+ * of the item
+ */
if (!is_indirect_le_ih(le_ih))
reiserfs_panic(sb, "vs-5652",
"item must be indirect %h", le_ih);
"(CUT, insert_size==%d)",
le_ih, s_cut_balance.insert_size[0]);
}
- /* it would be useful to make sure, that right neighboring
- item is direct item of this file */
+ /*
+ * it would be useful to make sure, that right neighboring
+ * item is direct item of this file
+ */
}
#endif
do_balance(&s_cut_balance, NULL, NULL, mode);
if (is_inode_locked) {
- /* we've done an indirect->direct conversion. when the data block
- ** was freed, it was removed from the list of blocks that must
- ** be flushed before the transaction commits, make sure to
- ** unmap and invalidate it
+ /*
+ * we've done an indirect->direct conversion. when the
+ * data block was freed, it was removed from the list of
+ * blocks that must be flushed before the transaction
+ * commits, make sure to unmap and invalidate it
*/
unmap_buffers(page, tail_pos);
REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
set_le_key_k_type(KEY_FORMAT_3_5, INODE_PKEY(inode), TYPE_STAT_DATA);
}
-/* Truncate file to the new size. Note, this must be called with a transaction
- already started */
+/*
+ * Truncate file to the new size. Note, this must be called with a
+ * transaction already started
+ */
int reiserfs_do_truncate(struct reiserfs_transaction_handle *th,
- struct inode *inode, /* ->i_size contains new size */
+ struct inode *inode, /* ->i_size contains new size */
struct page *page, /* up to date for last block */
- int update_timestamps /* when it is called by
- file_release to convert
- the tail - no timestamps
- should be updated */
+ /*
+ * when it is called by file_release to convert
+ * the tail - no timestamps should be updated
+ */
+ int update_timestamps
)
{
INITIALIZE_PATH(s_search_path); /* Path to the current object item. */
struct item_head *p_le_ih; /* Pointer to an item header. */
- struct cpu_key s_item_key; /* Key to search for a previous file item. */
+
+ /* Key to search for a previous file item. */
+ struct cpu_key s_item_key;
loff_t file_size, /* Old file size. */
new_file_size; /* New file size. */
int deleted; /* Number of deleted or truncated bytes. */
|| S_ISLNK(inode->i_mode)))
return 0;
+ /* deletion of directory - no need to update timestamps */
if (S_ISDIR(inode->i_mode)) {
- // deletion of directory - no need to update timestamps
truncate_directory(th, inode);
return 0;
}
/* Get new file size. */
new_file_size = inode->i_size;
- // FIXME: note, that key type is unimportant here
+ /* FIXME: note, that key type is unimportant here */
make_cpu_key(&s_item_key, inode, max_reiserfs_offset(inode),
TYPE_DIRECT, 3);
s_search_path.pos_in_item--;
/* Get real file size (total length of all file items) */
- p_le_ih = PATH_PITEM_HEAD(&s_search_path);
+ p_le_ih = tp_item_head(&s_search_path);
if (is_statdata_le_ih(p_le_ih))
file_size = 0;
else {
int bytes =
op_bytes_number(p_le_ih, inode->i_sb->s_blocksize);
- /* this may mismatch with real file size: if last direct item
- had no padding zeros and last unformatted node had no free
- space, this file would have this file size */
+ /*
+ * this may mismatch with real file size: if last direct item
+ * had no padding zeros and last unformatted node had no free
+ * space, this file would have this file size
+ */
file_size = offset + bytes - 1;
}
/*
set_cpu_key_k_offset(&s_item_key, file_size);
- /* While there are bytes to truncate and previous file item is presented in the tree. */
+ /*
+ * While there are bytes to truncate and previous
+ * file item is presented in the tree.
+ */
/*
- ** This loop could take a really long time, and could log
- ** many more blocks than a transaction can hold. So, we do a polite
- ** journal end here, and if the transaction needs ending, we make
- ** sure the file is consistent before ending the current trans
- ** and starting a new one
+ * This loop could take a really long time, and could log
+ * many more blocks than a transaction can hold. So, we do
+ * a polite journal end here, and if the transaction needs
+ * ending, we make sure the file is consistent before ending
+ * the current trans and starting a new one
*/
if (journal_transaction_should_end(th, 0) ||
reiserfs_transaction_free_space(th) <= JOURNAL_FOR_FREE_BLOCK_AND_UPDATE_SD) {
- int orig_len_alloc = th->t_blocks_allocated;
pathrelse(&s_search_path);
if (update_timestamps) {
}
reiserfs_update_sd(th, inode);
- err = journal_end(th, inode->i_sb, orig_len_alloc);
+ err = journal_end(th, inode->i_sb);
if (err)
goto out;
err = journal_begin(th, inode->i_sb,
update_and_out:
if (update_timestamps) {
- // this is truncate, not file closing
+ /* this is truncate, not file closing */
inode->i_mtime = CURRENT_TIME_SEC;
inode->i_ctime = CURRENT_TIME_SEC;
}
}
#ifdef CONFIG_REISERFS_CHECK
-// this makes sure, that we __append__, not overwrite or add holes
+/* this makes sure, that we __append__, not overwrite or add holes */
static void check_research_for_paste(struct treepath *path,
const struct cpu_key *key)
{
- struct item_head *found_ih = get_ih(path);
+ struct item_head *found_ih = tp_item_head(path);
if (is_direct_le_ih(found_ih)) {
if (le_ih_k_offset(found_ih) +
}
#endif /* config reiserfs check */
-/* Paste bytes to the existing item. Returns bytes number pasted into the item. */
-int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th, struct treepath *search_path, /* Path to the pasted item. */
- const struct cpu_key *key, /* Key to search for the needed item. */
- struct inode *inode, /* Inode item belongs to */
- const char *body, /* Pointer to the bytes to paste. */
+/*
+ * Paste bytes to the existing item.
+ * Returns bytes number pasted into the item.
+ */
+int reiserfs_paste_into_item(struct reiserfs_transaction_handle *th,
+ /* Path to the pasted item. */
+ struct treepath *search_path,
+ /* Key to search for the needed item. */
+ const struct cpu_key *key,
+ /* Inode item belongs to */
+ struct inode *inode,
+ /* Pointer to the bytes to paste. */
+ const char *body,
+ /* Size of pasted bytes. */
int pasted_size)
-{ /* Size of pasted bytes. */
+{
struct super_block *sb = inode->i_sb;
struct tree_balance s_paste_balance;
int retval;
#endif
}
- /* Perform balancing after all resources are collected by fix_nodes, and
- accessing them will not risk triggering schedule. */
+ /*
+ * Perform balancing after all resources are collected by fix_nodes,
+ * and accessing them will not risk triggering schedule.
+ */
if (retval == CARRY_ON) {
do_balance(&s_paste_balance, NULL /*ih */ , body, M_PASTE);
return 0;
return retval;
}
-/* Insert new item into the buffer at the path.
+/*
+ * Insert new item into the buffer at the path.
* th - active transaction handle
* path - path to the inserted item
* ih - pointer to the item header to insert
fs_gen = get_generation(inode->i_sb);
quota_bytes = ih_item_len(ih);
- /* hack so the quota code doesn't have to guess if the file has
- ** a tail, links are always tails, so there's no guessing needed
+ /*
+ * hack so the quota code doesn't have to guess
+ * if the file has a tail, links are always tails,
+ * so there's no guessing needed
*/
if (!S_ISLNK(inode->i_mode) && is_direct_le_ih(ih))
quota_bytes = inode->i_sb->s_blocksize + UNFM_P_SIZE;
"reiserquota insert_item(): allocating %u id=%u type=%c",
quota_bytes, inode->i_uid, head2type(ih));
#endif
- /* We can't dirty inode here. It would be immediately written but
- * appropriate stat item isn't inserted yet... */
+ /*
+ * We can't dirty inode here. It would be immediately
+ * written but appropriate stat item isn't inserted yet...
+ */
depth = reiserfs_write_unlock_nested(inode->i_sb);
retval = dquot_alloc_space_nodirty(inode, quota_bytes);
reiserfs_write_lock_nested(inode->i_sb, depth);
#ifdef DISPLACE_NEW_PACKING_LOCALITIES
s_ins_balance.key = key->on_disk_key;
#endif
- /* DQUOT_* can schedule, must check to be sure calling fix_nodes is safe */
+ /*
+ * DQUOT_* can schedule, must check to be sure calling
+ * fix_nodes is safe
+ */
if (inode && fs_changed(fs_gen, inode->i_sb)) {
goto search_again;
}
projects / cascardo / linux.git / blobdiff