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reiserfs: rename p_s_tb to tb

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This patch is a simple s/p_s_tb/tb/g to the reiserfs code.  This is the
fourth in a series of patches to rip out some of the awful variable
naming in reiserfs.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Mahoney 2009-03-30 14:02:48 -04:00 committed by Linus Torvalds
parent 995c762ea4
commit a063ae1792
3 changed files with 252 additions and 249 deletions
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478
fs/reiserfs/fix_node.c
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@ -749,26 +749,26 @@ else \
-1, -1);\
}
static void free_buffers_in_tb(struct tree_balance *p_s_tb)
static void free_buffers_in_tb(struct tree_balance *tb)
{
int n_counter;
pathrelse(p_s_tb->tb_path);
pathrelse(tb->tb_path);
for (n_counter = 0; n_counter < MAX_HEIGHT; n_counter++) {
brelse(p_s_tb->L[n_counter]);
brelse(p_s_tb->R[n_counter]);
brelse(p_s_tb->FL[n_counter]);
brelse(p_s_tb->FR[n_counter]);
brelse(p_s_tb->CFL[n_counter]);
brelse(p_s_tb->CFR[n_counter]);
brelse(tb->L[n_counter]);
brelse(tb->R[n_counter]);
brelse(tb->FL[n_counter]);
brelse(tb->FR[n_counter]);
brelse(tb->CFL[n_counter]);
brelse(tb->CFR[n_counter]);
p_s_tb->L[n_counter] = NULL;
p_s_tb->R[n_counter] = NULL;
p_s_tb->FL[n_counter] = NULL;
p_s_tb->FR[n_counter] = NULL;
p_s_tb->CFL[n_counter] = NULL;
p_s_tb->CFR[n_counter] = NULL;
tb->L[n_counter] = NULL;
tb->R[n_counter] = NULL;
tb->FL[n_counter] = NULL;
tb->FR[n_counter] = NULL;
tb->CFL[n_counter] = NULL;
tb->CFR[n_counter] = NULL;
}
}
@ -778,14 +778,14 @@ static void free_buffers_in_tb(struct tree_balance *p_s_tb)
* NO_DISK_SPACE - no disk space.
*/
/* The function is NOT SCHEDULE-SAFE! */
static int get_empty_nodes(struct tree_balance *p_s_tb, int n_h)
static int get_empty_nodes(struct tree_balance *tb, int n_h)
{
struct buffer_head *p_s_new_bh,
*p_s_Sh = PATH_H_PBUFFER(p_s_tb->tb_path, n_h);
*p_s_Sh = PATH_H_PBUFFER(tb->tb_path, n_h);
b_blocknr_t *p_n_blocknr, a_n_blocknrs[MAX_AMOUNT_NEEDED] = { 0, };
int n_counter, n_number_of_freeblk, n_amount_needed, /* number of needed empty blocks */
n_retval = CARRY_ON;
struct super_block *sb = p_s_tb->tb_sb;
struct super_block *sb = tb->tb_sb;
/* number_of_freeblk is the number of empty blocks which have been
acquired for use by the balancing algorithm minus the number of
@ -803,15 +803,15 @@ static int get_empty_nodes(struct tree_balance *p_s_tb, int n_h)
the analysis or 0 if not restarted, then subtract the amount needed
by all of the levels of the tree below n_h. */
/* blknum includes S[n_h], so we subtract 1 in this calculation */
for (n_counter = 0, n_number_of_freeblk = p_s_tb->cur_blknum;
for (n_counter = 0, n_number_of_freeblk = tb->cur_blknum;
n_counter < n_h; n_counter++)
n_number_of_freeblk -=
(p_s_tb->blknum[n_counter]) ? (p_s_tb->blknum[n_counter] -
(tb->blknum[n_counter]) ? (tb->blknum[n_counter] -
1) : 0;
/* Allocate missing empty blocks. */
/* if p_s_Sh == 0 then we are getting a new root */
n_amount_needed = (p_s_Sh) ? (p_s_tb->blknum[n_h] - 1) : 1;
n_amount_needed = (p_s_Sh) ? (tb->blknum[n_h] - 1) : 1;
/* Amount_needed = the amount that we need more than the amount that we have. */
if (n_amount_needed > n_number_of_freeblk)
n_amount_needed -= n_number_of_freeblk;
@ -819,7 +819,7 @@ static int get_empty_nodes(struct tree_balance *p_s_tb, int n_h)
return CARRY_ON;
/* No need to check quota - is not allocated for blocks used for formatted nodes */
if (reiserfs_new_form_blocknrs(p_s_tb, a_n_blocknrs,
if (reiserfs_new_form_blocknrs(tb, a_n_blocknrs,
n_amount_needed) == NO_DISK_SPACE)
return NO_DISK_SPACE;
@ -838,14 +838,14 @@ static int get_empty_nodes(struct tree_balance *p_s_tb, int n_h)
p_s_new_bh);
/* Put empty buffers into the array. */
RFALSE(p_s_tb->FEB[p_s_tb->cur_blknum],
RFALSE(tb->FEB[tb->cur_blknum],
"PAP-8141: busy slot for new buffer");
set_buffer_journal_new(p_s_new_bh);
p_s_tb->FEB[p_s_tb->cur_blknum++] = p_s_new_bh;
tb->FEB[tb->cur_blknum++] = p_s_new_bh;
}
if (n_retval == CARRY_ON && FILESYSTEM_CHANGED_TB(p_s_tb))
if (n_retval == CARRY_ON && FILESYSTEM_CHANGED_TB(tb))
n_retval = REPEAT_SEARCH;
return n_retval;
@ -896,33 +896,34 @@ static int get_rfree(struct tree_balance *tb, int h)
}
/* Check whether left neighbor is in memory. */
static int is_left_neighbor_in_cache(struct tree_balance *p_s_tb, int n_h)
static int is_left_neighbor_in_cache(struct tree_balance *tb, int n_h)
{
struct buffer_head *p_s_father, *left;
struct super_block *sb = p_s_tb->tb_sb;
struct super_block *sb = tb->tb_sb;
b_blocknr_t n_left_neighbor_blocknr;
int n_left_neighbor_position;
if (!p_s_tb->FL[n_h]) /* Father of the left neighbor does not exist. */
/* Father of the left neighbor does not exist. */
if (!tb->FL[n_h])
return 0;
/* Calculate father of the node to be balanced. */
p_s_father = PATH_H_PBUFFER(p_s_tb->tb_path, n_h + 1);
p_s_father = PATH_H_PBUFFER(tb->tb_path, n_h + 1);
RFALSE(!p_s_father ||
!B_IS_IN_TREE(p_s_father) ||
!B_IS_IN_TREE(p_s_tb->FL[n_h]) ||
!B_IS_IN_TREE(tb->FL[n_h]) ||
!buffer_uptodate(p_s_father) ||
!buffer_uptodate(p_s_tb->FL[n_h]),
!buffer_uptodate(tb->FL[n_h]),
"vs-8165: F[h] (%b) or FL[h] (%b) is invalid",
p_s_father, p_s_tb->FL[n_h]);
p_s_father, tb->FL[n_h]);
/* Get position of the pointer to the left neighbor into the left father. */
n_left_neighbor_position = (p_s_father == p_s_tb->FL[n_h]) ?
p_s_tb->lkey[n_h] : B_NR_ITEMS(p_s_tb->FL[n_h]);
n_left_neighbor_position = (p_s_father == tb->FL[n_h]) ?
tb->lkey[n_h] : B_NR_ITEMS(tb->FL[n_h]);
/* Get left neighbor block number. */
n_left_neighbor_blocknr =
B_N_CHILD_NUM(p_s_tb->FL[n_h], n_left_neighbor_position);
B_N_CHILD_NUM(tb->FL[n_h], n_left_neighbor_position);
/* Look for the left neighbor in the cache. */
if ((left = sb_find_get_block(sb, n_left_neighbor_blocknr))) {
@ -953,14 +954,14 @@ static void decrement_key(struct cpu_key *p_s_key)
SCHEDULE_OCCURRED - schedule occurred while the function worked;
* CARRY_ON - schedule didn't occur while the function worked;
*/
static int get_far_parent(struct tree_balance *p_s_tb,
static int get_far_parent(struct tree_balance *tb,
int n_h,
struct buffer_head **pp_s_father,
struct buffer_head **pp_s_com_father, char c_lr_par)
{
struct buffer_head *p_s_parent;
INITIALIZE_PATH(s_path_to_neighbor_father);
struct treepath *p_s_path = p_s_tb->tb_path;
struct treepath *p_s_path = tb->tb_path;
struct cpu_key s_lr_father_key;
int n_counter,
n_position = INT_MAX,
@ -1005,9 +1006,9 @@ static int get_far_parent(struct tree_balance *p_s_tb,
if (n_counter == FIRST_PATH_ELEMENT_OFFSET) {
/* Check whether first buffer in the path is the root of the tree. */
if (PATH_OFFSET_PBUFFER
(p_s_tb->tb_path,
(tb->tb_path,
FIRST_PATH_ELEMENT_OFFSET)->b_blocknr ==
SB_ROOT_BLOCK(p_s_tb->tb_sb)) {
SB_ROOT_BLOCK(tb->tb_sb)) {
*pp_s_father = *pp_s_com_father = NULL;
return CARRY_ON;
}
@ -1022,7 +1023,7 @@ static int get_far_parent(struct tree_balance *p_s_tb,
if (buffer_locked(*pp_s_com_father)) {
__wait_on_buffer(*pp_s_com_father);
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
if (FILESYSTEM_CHANGED_TB(tb)) {
brelse(*pp_s_com_father);
return REPEAT_SEARCH;
}
@ -1035,9 +1036,9 @@ static int get_far_parent(struct tree_balance *p_s_tb,
le_key2cpu_key(&s_lr_father_key,
B_N_PDELIM_KEY(*pp_s_com_father,
(c_lr_par ==
LEFT_PARENTS) ? (p_s_tb->lkey[n_h - 1] =
LEFT_PARENTS) ? (tb->lkey[n_h - 1] =
n_position -
1) : (p_s_tb->rkey[n_h -
1) : (tb->rkey[n_h -
1] =
n_position)));
@ -1045,12 +1046,12 @@ static int get_far_parent(struct tree_balance *p_s_tb,
decrement_key(&s_lr_father_key);
if (search_by_key
(p_s_tb->tb_sb, &s_lr_father_key, &s_path_to_neighbor_father,
(tb->tb_sb, &s_lr_father_key, &s_path_to_neighbor_father,
n_h + 1) == IO_ERROR)
// path is released
return IO_ERROR;
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
if (FILESYSTEM_CHANGED_TB(tb)) {
pathrelse(&s_path_to_neighbor_father);
brelse(*pp_s_com_father);
return REPEAT_SEARCH;
@ -1075,24 +1076,26 @@ static int get_far_parent(struct tree_balance *p_s_tb,
* Returns: SCHEDULE_OCCURRED - schedule occurred while the function worked;
* CARRY_ON - schedule didn't occur while the function worked;
*/
static int get_parents(struct tree_balance *p_s_tb, int n_h)
static int get_parents(struct tree_balance *tb, int n_h)
{
struct treepath *p_s_path = p_s_tb->tb_path;
struct treepath *p_s_path = tb->tb_path;
int n_position,
n_ret_value,
n_path_offset = PATH_H_PATH_OFFSET(p_s_tb->tb_path, n_h);
n_path_offset = PATH_H_PATH_OFFSET(tb->tb_path, n_h);
struct buffer_head *p_s_curf, *p_s_curcf;
/* Current node is the root of the tree or will be root of the tree */
if (n_path_offset <= FIRST_PATH_ELEMENT_OFFSET) {
/* The root can not have parents.
Release nodes which previously were obtained as parents of the current node neighbors. */
brelse(p_s_tb->FL[n_h]);
brelse(p_s_tb->CFL[n_h]);
brelse(p_s_tb->FR[n_h]);
brelse(p_s_tb->CFR[n_h]);
p_s_tb->FL[n_h] = p_s_tb->CFL[n_h] = p_s_tb->FR[n_h] =
p_s_tb->CFR[n_h] = NULL;
brelse(tb->FL[n_h]);
brelse(tb->CFL[n_h]);
brelse(tb->FR[n_h]);
brelse(tb->CFR[n_h]);
tb->FL[n_h] = NULL;
tb->CFL[n_h] = NULL;
tb->FR[n_h] = NULL;
tb->CFR[n_h] = NULL;
return CARRY_ON;
}
@ -1104,22 +1107,22 @@ static int get_parents(struct tree_balance *p_s_tb, int n_h)
PATH_OFFSET_PBUFFER(p_s_path, n_path_offset - 1);
get_bh(p_s_curf);
get_bh(p_s_curf);
p_s_tb->lkey[n_h] = n_position - 1;
tb->lkey[n_h] = n_position - 1;
} else {
/* Calculate current parent of L[n_path_offset], which is the left neighbor of the current node.
Calculate current common parent of L[n_path_offset] and the current node. Note that
CFL[n_path_offset] not equal FL[n_path_offset] and CFL[n_path_offset] not equal F[n_path_offset].
Calculate lkey[n_path_offset]. */
if ((n_ret_value = get_far_parent(p_s_tb, n_h + 1, &p_s_curf,
if ((n_ret_value = get_far_parent(tb, n_h + 1, &p_s_curf,
&p_s_curcf,
LEFT_PARENTS)) != CARRY_ON)
return n_ret_value;
}
brelse(p_s_tb->FL[n_h]);
p_s_tb->FL[n_h] = p_s_curf; /* New initialization of FL[n_h]. */
brelse(p_s_tb->CFL[n_h]);
p_s_tb->CFL[n_h] = p_s_curcf; /* New initialization of CFL[n_h]. */
brelse(tb->FL[n_h]);
tb->FL[n_h] = p_s_curf; /* New initialization of FL[n_h]. */
brelse(tb->CFL[n_h]);
tb->CFL[n_h] = p_s_curcf; /* New initialization of CFL[n_h]. */
RFALSE((p_s_curf && !B_IS_IN_TREE(p_s_curf)) ||
(p_s_curcf && !B_IS_IN_TREE(p_s_curcf)),
@ -1133,7 +1136,7 @@ static int get_parents(struct tree_balance *p_s_tb, int n_h)
Calculate current common parent of R[n_h] and current node. Note that CFR[n_h]
not equal FR[n_path_offset] and CFR[n_h] not equal F[n_h]. */
if ((n_ret_value =
get_far_parent(p_s_tb, n_h + 1, &p_s_curf, &p_s_curcf,
get_far_parent(tb, n_h + 1, &p_s_curf, &p_s_curcf,
RIGHT_PARENTS)) != CARRY_ON)
return n_ret_value;
} else {
@ -1143,14 +1146,16 @@ static int get_parents(struct tree_balance *p_s_tb, int n_h)
PATH_OFFSET_PBUFFER(p_s_path, n_path_offset - 1);
get_bh(p_s_curf);
get_bh(p_s_curf);
p_s_tb->rkey[n_h] = n_position;
tb->rkey[n_h] = n_position;
}
brelse(p_s_tb->FR[n_h]);
p_s_tb->FR[n_h] = p_s_curf; /* New initialization of FR[n_path_offset]. */
brelse(tb->FR[n_h]);
/* New initialization of FR[n_path_offset]. */
tb->FR[n_h] = p_s_curf;
brelse(p_s_tb->CFR[n_h]);
p_s_tb->CFR[n_h] = p_s_curcf; /* New initialization of CFR[n_path_offset]. */
brelse(tb->CFR[n_h]);
/* New initialization of CFR[n_path_offset]. */
tb->CFR[n_h] = p_s_curcf;
RFALSE((p_s_curf && !B_IS_IN_TREE(p_s_curf)) ||
(p_s_curcf && !B_IS_IN_TREE(p_s_curcf)),
@ -1885,12 +1890,12 @@ static int check_balance(int mode,
}
/* Check whether parent at the path is the really parent of the current node.*/
static int get_direct_parent(struct tree_balance *p_s_tb, int n_h)
static int get_direct_parent(struct tree_balance *tb, int n_h)
{
struct buffer_head *bh;
struct treepath *p_s_path = p_s_tb->tb_path;
struct treepath *p_s_path = tb->tb_path;
int n_position,
n_path_offset = PATH_H_PATH_OFFSET(p_s_tb->tb_path, n_h);
n_path_offset = PATH_H_PATH_OFFSET(tb->tb_path, n_h);
/* We are in the root or in the new root. */
if (n_path_offset <= FIRST_PATH_ELEMENT_OFFSET) {
@ -1899,7 +1904,7 @@ static int get_direct_parent(struct tree_balance *p_s_tb, int n_h)
"PAP-8260: invalid offset in the path");
if (PATH_OFFSET_PBUFFER(p_s_path, FIRST_PATH_ELEMENT_OFFSET)->
b_blocknr == SB_ROOT_BLOCK(p_s_tb->tb_sb)) {
b_blocknr == SB_ROOT_BLOCK(tb->tb_sb)) {
/* Root is not changed. */
PATH_OFFSET_PBUFFER(p_s_path, n_path_offset - 1) = NULL;
PATH_OFFSET_POSITION(p_s_path, n_path_offset - 1) = 0;
@ -1924,7 +1929,7 @@ static int get_direct_parent(struct tree_balance *p_s_tb, int n_h)
if (buffer_locked(bh)) {
__wait_on_buffer(bh);
if (FILESYSTEM_CHANGED_TB(p_s_tb))
if (FILESYSTEM_CHANGED_TB(tb))
return REPEAT_SEARCH;
}
@ -1937,85 +1942,86 @@ static int get_direct_parent(struct tree_balance *p_s_tb, int n_h)
* Returns: SCHEDULE_OCCURRED - schedule occurred while the function worked;
* CARRY_ON - schedule didn't occur while the function worked;
*/
static int get_neighbors(struct tree_balance *p_s_tb, int n_h)
static int get_neighbors(struct tree_balance *tb, int n_h)
{
int n_child_position,
n_path_offset = PATH_H_PATH_OFFSET(p_s_tb->tb_path, n_h + 1);
n_path_offset = PATH_H_PATH_OFFSET(tb->tb_path, n_h + 1);
unsigned long n_son_number;
struct super_block *sb = p_s_tb->tb_sb;
struct super_block *sb = tb->tb_sb;
struct buffer_head *bh;
PROC_INFO_INC(sb, get_neighbors[n_h]);
if (p_s_tb->lnum[n_h]) {
if (tb->lnum[n_h]) {
/* We need left neighbor to balance S[n_h]. */
PROC_INFO_INC(sb, need_l_neighbor[n_h]);
bh = PATH_OFFSET_PBUFFER(p_s_tb->tb_path, n_path_offset);
bh = PATH_OFFSET_PBUFFER(tb->tb_path, n_path_offset);
RFALSE(bh == p_s_tb->FL[n_h] &&
!PATH_OFFSET_POSITION(p_s_tb->tb_path, n_path_offset),
RFALSE(bh == tb->FL[n_h] &&
!PATH_OFFSET_POSITION(tb->tb_path, n_path_offset),
"PAP-8270: invalid position in the parent");
n_child_position =
(bh ==
p_s_tb->FL[n_h]) ? p_s_tb->lkey[n_h] : B_NR_ITEMS(p_s_tb->
tb->FL[n_h]) ? tb->lkey[n_h] : B_NR_ITEMS(tb->
FL[n_h]);
n_son_number = B_N_CHILD_NUM(p_s_tb->FL[n_h], n_child_position);
n_son_number = B_N_CHILD_NUM(tb->FL[n_h], n_child_position);
bh = sb_bread(sb, n_son_number);
if (!bh)
return IO_ERROR;
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
if (FILESYSTEM_CHANGED_TB(tb)) {
brelse(bh);
PROC_INFO_INC(sb, get_neighbors_restart[n_h]);
return REPEAT_SEARCH;
}
RFALSE(!B_IS_IN_TREE(p_s_tb->FL[n_h]) ||
n_child_position > B_NR_ITEMS(p_s_tb->FL[n_h]) ||
B_N_CHILD_NUM(p_s_tb->FL[n_h], n_child_position) !=
RFALSE(!B_IS_IN_TREE(tb->FL[n_h]) ||
n_child_position > B_NR_ITEMS(tb->FL[n_h]) ||
B_N_CHILD_NUM(tb->FL[n_h], n_child_position) !=
bh->b_blocknr, "PAP-8275: invalid parent");
RFALSE(!B_IS_IN_TREE(bh), "PAP-8280: invalid child");
RFALSE(!n_h &&
B_FREE_SPACE(bh) !=
MAX_CHILD_SIZE(bh) -
dc_size(B_N_CHILD(p_s_tb->FL[0], n_child_position)),
dc_size(B_N_CHILD(tb->FL[0], n_child_position)),
"PAP-8290: invalid child size of left neighbor");
brelse(p_s_tb->L[n_h]);
p_s_tb->L[n_h] = bh;
brelse(tb->L[n_h]);
tb->L[n_h] = bh;
}
if (p_s_tb->rnum[n_h]) { /* We need right neighbor to balance S[n_path_offset]. */
/* We need right neighbor to balance S[n_path_offset]. */
if (tb->rnum[n_h]) {
PROC_INFO_INC(sb, need_r_neighbor[n_h]);
bh = PATH_OFFSET_PBUFFER(p_s_tb->tb_path, n_path_offset);
bh = PATH_OFFSET_PBUFFER(tb->tb_path, n_path_offset);
RFALSE(bh == p_s_tb->FR[n_h] &&
PATH_OFFSET_POSITION(p_s_tb->tb_path,
RFALSE(bh == tb->FR[n_h] &&
PATH_OFFSET_POSITION(tb->tb_path,
n_path_offset) >=
B_NR_ITEMS(bh),
"PAP-8295: invalid position in the parent");
n_child_position =
(bh == p_s_tb->FR[n_h]) ? p_s_tb->rkey[n_h] + 1 : 0;
n_son_number = B_N_CHILD_NUM(p_s_tb->FR[n_h], n_child_position);
(bh == tb->FR[n_h]) ? tb->rkey[n_h] + 1 : 0;
n_son_number = B_N_CHILD_NUM(tb->FR[n_h], n_child_position);
bh = sb_bread(sb, n_son_number);
if (!bh)
return IO_ERROR;
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
if (FILESYSTEM_CHANGED_TB(tb)) {
brelse(bh);
PROC_INFO_INC(sb, get_neighbors_restart[n_h]);
return REPEAT_SEARCH;
}
brelse(p_s_tb->R[n_h]);
p_s_tb->R[n_h] = bh;
brelse(tb->R[n_h]);
tb->R[n_h] = bh;
RFALSE(!n_h
&& B_FREE_SPACE(bh) !=
MAX_CHILD_SIZE(bh) -
dc_size(B_N_CHILD(p_s_tb->FR[0], n_child_position)),
dc_size(B_N_CHILD(tb->FR[0], n_child_position)),
"PAP-8300: invalid child size of right neighbor (%d != %d - %d)",
B_FREE_SPACE(bh), MAX_CHILD_SIZE(bh),
dc_size(B_N_CHILD(p_s_tb->FR[0], n_child_position)));
dc_size(B_N_CHILD(tb->FR[0], n_child_position)));
}
return CARRY_ON;
@ -2139,7 +2145,7 @@ static int clear_all_dirty_bits(struct super_block *s, struct buffer_head *bh)
return reiserfs_prepare_for_journal(s, bh, 0);
}
static int wait_tb_buffers_until_unlocked(struct tree_balance *p_s_tb)
static int wait_tb_buffers_until_unlocked(struct tree_balance *tb)
{
struct buffer_head *locked;
#ifdef CONFIG_REISERFS_CHECK
@ -2151,95 +2157,94 @@ static int wait_tb_buffers_until_unlocked(struct tree_balance *p_s_tb)
locked = NULL;
for (i = p_s_tb->tb_path->path_length;
for (i = tb->tb_path->path_length;
!locked && i > ILLEGAL_PATH_ELEMENT_OFFSET; i--) {
if (PATH_OFFSET_PBUFFER(p_s_tb->tb_path, i)) {
if (PATH_OFFSET_PBUFFER(tb->tb_path, i)) {
/* if I understand correctly, we can only be sure the last buffer
** in the path is in the tree --clm
*/
#ifdef CONFIG_REISERFS_CHECK
if (PATH_PLAST_BUFFER(p_s_tb->tb_path) ==
PATH_OFFSET_PBUFFER(p_s_tb->tb_path, i)) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
if (PATH_PLAST_BUFFER(tb->tb_path) ==
PATH_OFFSET_PBUFFER(tb->tb_path, i))
tb_buffer_sanity_check(tb->tb_sb,
PATH_OFFSET_PBUFFER
(p_s_tb->tb_path,
(tb->tb_path,
i), "S",
p_s_tb->tb_path->
tb->tb_path->
path_length - i);
}
#endif
if (!clear_all_dirty_bits(p_s_tb->tb_sb,
if (!clear_all_dirty_bits(tb->tb_sb,
PATH_OFFSET_PBUFFER
(p_s_tb->tb_path,
(tb->tb_path,
i))) {
locked =
PATH_OFFSET_PBUFFER(p_s_tb->tb_path,
PATH_OFFSET_PBUFFER(tb->tb_path,
i);
}
}
}
for (i = 0; !locked && i < MAX_HEIGHT && p_s_tb->insert_size[i];
for (i = 0; !locked && i < MAX_HEIGHT && tb->insert_size[i];
i++) {
if (p_s_tb->lnum[i]) {
if (tb->lnum[i]) {
if (p_s_tb->L[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->L[i],
if (tb->L[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->L[i],
"L", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->L[i]))
locked = p_s_tb->L[i];
(tb->tb_sb, tb->L[i]))
locked = tb->L[i];
}
if (!locked && p_s_tb->FL[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->FL[i],
if (!locked && tb->FL[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->FL[i],
"FL", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->FL[i]))
locked = p_s_tb->FL[i];
(tb->tb_sb, tb->FL[i]))
locked = tb->FL[i];
}
if (!locked && p_s_tb->CFL[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->CFL[i],
if (!locked && tb->CFL[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->CFL[i],
"CFL", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->CFL[i]))
locked = p_s_tb->CFL[i];
(tb->tb_sb, tb->CFL[i]))
locked = tb->CFL[i];
}
}
if (!locked && (p_s_tb->rnum[i])) {
if (!locked && (tb->rnum[i])) {
if (p_s_tb->R[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->R[i],
if (tb->R[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->R[i],
"R", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->R[i]))
locked = p_s_tb->R[i];
(tb->tb_sb, tb->R[i]))
locked = tb->R[i];
}
if (!locked && p_s_tb->FR[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->FR[i],
if (!locked && tb->FR[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->FR[i],
"FR", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->FR[i]))
locked = p_s_tb->FR[i];
(tb->tb_sb, tb->FR[i]))
locked = tb->FR[i];
}
if (!locked && p_s_tb->CFR[i]) {
tb_buffer_sanity_check(p_s_tb->tb_sb,
p_s_tb->CFR[i],
if (!locked && tb->CFR[i]) {
tb_buffer_sanity_check(tb->tb_sb,
tb->CFR[i],
"CFR", i);
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->CFR[i]))
locked = p_s_tb->CFR[i];
(tb->tb_sb, tb->CFR[i]))
locked = tb->CFR[i];
}
}
}
@ -2252,10 +2257,10 @@ static int wait_tb_buffers_until_unlocked(struct tree_balance *p_s_tb)
** --clm
*/
for (i = 0; !locked && i < MAX_FEB_SIZE; i++) {
if (p_s_tb->FEB[i]) {
if (tb->FEB[i]) {
if (!clear_all_dirty_bits
(p_s_tb->tb_sb, p_s_tb->FEB[i]))
locked = p_s_tb->FEB[i];
(tb->tb_sb, tb->FEB[i]))
locked = tb->FEB[i];
}
}
@ -2263,21 +2268,20 @@ static int wait_tb_buffers_until_unlocked(struct tree_balance *p_s_tb)
#ifdef CONFIG_REISERFS_CHECK
repeat_counter++;
if ((repeat_counter % 10000) == 0) {
reiserfs_warning(p_s_tb->tb_sb, "reiserfs-8200",
reiserfs_warning(tb->tb_sb, "reiserfs-8200",
"too many iterations waiting "
"for buffer to unlock "
"(%b)", locked);
/* Don't loop forever. Try to recover from possible error. */
return (FILESYSTEM_CHANGED_TB(p_s_tb)) ?
return (FILESYSTEM_CHANGED_TB(tb)) ?
REPEAT_SEARCH : CARRY_ON;
}
#endif
__wait_on_buffer(locked);
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
if (FILESYSTEM_CHANGED_TB(tb))
return REPEAT_SEARCH;
}
}
} while (locked);
@ -2307,138 +2311,136 @@ static int wait_tb_buffers_until_unlocked(struct tree_balance *p_s_tb)
* tb tree_balance structure;
* inum item number in S[h];
* pos_in_item - comment this if you can
* ins_ih & ins_sd are used when inserting
* ins_ih item head of item being inserted
* data inserted item or data to be pasted
* Returns: 1 - schedule occurred while the function worked;
* 0 - schedule didn't occur while the function worked;
* -1 - if no_disk_space
*/
int fix_nodes(int n_op_mode, struct tree_balance *p_s_tb, struct item_head *p_s_ins_ih, // item head of item being inserted
const void *data // inserted item or data to be pasted
)
int fix_nodes(int n_op_mode, struct tree_balance *tb,
struct item_head *p_s_ins_ih, const void *data)
{
int n_ret_value, n_h, n_item_num = PATH_LAST_POSITION(p_s_tb->tb_path);
int n_ret_value, n_h, n_item_num = PATH_LAST_POSITION(tb->tb_path);
int n_pos_in_item;
/* we set wait_tb_buffers_run when we have to restore any dirty bits cleared
** during wait_tb_buffers_run
*/
int wait_tb_buffers_run = 0;
struct buffer_head *p_s_tbS0 = PATH_PLAST_BUFFER(p_s_tb->tb_path);
struct buffer_head *tbS0 = PATH_PLAST_BUFFER(tb->tb_path);
++REISERFS_SB(p_s_tb->tb_sb)->s_fix_nodes;
++REISERFS_SB(tb->tb_sb)->s_fix_nodes;
n_pos_in_item = p_s_tb->tb_path->pos_in_item;
n_pos_in_item = tb->tb_path->pos_in_item;
p_s_tb->fs_gen = get_generation(p_s_tb->tb_sb);
tb->fs_gen = get_generation(tb->tb_sb);
/* we prepare and log the super here so it will already be in the
** transaction when do_balance needs to change it.
** This way do_balance won't have to schedule when trying to prepare
** the super for logging
*/
reiserfs_prepare_for_journal(p_s_tb->tb_sb,
SB_BUFFER_WITH_SB(p_s_tb->tb_sb), 1);
journal_mark_dirty(p_s_tb->transaction_handle, p_s_tb->tb_sb,
SB_BUFFER_WITH_SB(p_s_tb->tb_sb));
if (FILESYSTEM_CHANGED_TB(p_s_tb))
reiserfs_prepare_for_journal(tb->tb_sb,
SB_BUFFER_WITH_SB(tb->tb_sb), 1);
journal_mark_dirty(tb->transaction_handle, tb->tb_sb,
SB_BUFFER_WITH_SB(tb->tb_sb));
if (FILESYSTEM_CHANGED_TB(tb))
return REPEAT_SEARCH;
/* if it possible in indirect_to_direct conversion */
if (buffer_locked(p_s_tbS0)) {
__wait_on_buffer(p_s_tbS0);
if (FILESYSTEM_CHANGED_TB(p_s_tb))
if (buffer_locked(tbS0)) {
__wait_on_buffer(tbS0);
if (FILESYSTEM_CHANGED_TB(tb))
return REPEAT_SEARCH;
}
#ifdef CONFIG_REISERFS_CHECK
if (cur_tb) {
print_cur_tb("fix_nodes");
reiserfs_panic(p_s_tb->tb_sb, "PAP-8305",
reiserfs_panic(tb->tb_sb, "PAP-8305",
"there is pending do_balance");
}
if (!buffer_uptodate(p_s_tbS0) || !B_IS_IN_TREE(p_s_tbS0)) {
reiserfs_panic(p_s_tb->tb_sb, "PAP-8320", "S[0] (%b %z) is "
if (!buffer_uptodate(tbS0) || !B_IS_IN_TREE(tbS0))
reiserfs_panic(tb->tb_sb, "PAP-8320", "S[0] (%b %z) is "
"not uptodate at the beginning of fix_nodes "
"or not in tree (mode %c)",
p_s_tbS0, p_s_tbS0, n_op_mode);
}
tbS0, tbS0, n_op_mode);
/* Check parameters. */
switch (n_op_mode) {
case M_INSERT:
if (n_item_num <= 0 || n_item_num > B_NR_ITEMS(p_s_tbS0))
reiserfs_panic(p_s_tb->tb_sb, "PAP-8330", "Incorrect "
if (n_item_num <= 0 || n_item_num > B_NR_ITEMS(tbS0))
reiserfs_panic(tb->tb_sb, "PAP-8330", "Incorrect "
"item number %d (in S0 - %d) in case "
"of insert", n_item_num,
B_NR_ITEMS(p_s_tbS0));
B_NR_ITEMS(tbS0));
break;
case M_PASTE:
case M_DELETE:
case M_CUT:
if (n_item_num < 0 || n_item_num >= B_NR_ITEMS(p_s_tbS0)) {
print_block(p_s_tbS0, 0, -1, -1);
reiserfs_panic(p_s_tb->tb_sb, "PAP-8335", "Incorrect "
if (n_item_num < 0 || n_item_num >= B_NR_ITEMS(tbS0)) {
print_block(tbS0, 0, -1, -1);
reiserfs_panic(tb->tb_sb, "PAP-8335", "Incorrect "
"item number(%d); mode = %c "
"insert_size = %d",
n_item_num, n_op_mode,
p_s_tb->insert_size[0]);
tb->insert_size[0]);
}
break;
default:
reiserfs_panic(p_s_tb->tb_sb, "PAP-8340", "Incorrect mode "
reiserfs_panic(tb->tb_sb, "PAP-8340", "Incorrect mode "
"of operation");
}
#endif
if (get_mem_for_virtual_node(p_s_tb) == REPEAT_SEARCH)
if (get_mem_for_virtual_node(tb) == REPEAT_SEARCH)
// FIXME: maybe -ENOMEM when tb->vn_buf == 0? Now just repeat
return REPEAT_SEARCH;
/* Starting from the leaf level; for all levels n_h of the tree. */
for (n_h = 0; n_h < MAX_HEIGHT && p_s_tb->insert_size[n_h]; n_h++) {
if ((n_ret_value = get_direct_parent(p_s_tb, n_h)) != CARRY_ON) {
for (n_h = 0; n_h < MAX_HEIGHT && tb->insert_size[n_h]; n_h++) {
n_ret_value = get_direct_parent(tb, n_h);
if (n_ret_value != CARRY_ON)
goto repeat;
}
if ((n_ret_value =
check_balance(n_op_mode, p_s_tb, n_h, n_item_num,
n_pos_in_item, p_s_ins_ih,
data)) != CARRY_ON) {
n_ret_value = check_balance(n_op_mode, tb, n_h, n_item_num,
n_pos_in_item, p_s_ins_ih, data);
if (n_ret_value != CARRY_ON) {
if (n_ret_value == NO_BALANCING_NEEDED) {
/* No balancing for higher levels needed. */
if ((n_ret_value =
get_neighbors(p_s_tb, n_h)) != CARRY_ON) {
n_ret_value = get_neighbors(tb, n_h);
if (n_ret_value != CARRY_ON)
goto repeat;
}
if (n_h != MAX_HEIGHT - 1)
p_s_tb->insert_size[n_h + 1] = 0;
tb->insert_size[n_h + 1] = 0;
/* ok, analysis and resource gathering are complete */
break;
}
goto repeat;
}
if ((n_ret_value = get_neighbors(p_s_tb, n_h)) != CARRY_ON) {
n_ret_value = get_neighbors(tb, n_h);
if (n_ret_value != CARRY_ON)
goto repeat;
}
if ((n_ret_value = get_empty_nodes(p_s_tb, n_h)) != CARRY_ON) {
goto repeat; /* No disk space, or schedule occurred and
analysis may be invalid and needs to be redone. */
}
/* No disk space, or schedule occurred and analysis may be
* invalid and needs to be redone. */
n_ret_value = get_empty_nodes(tb, n_h);
if (n_ret_value != CARRY_ON)
goto repeat;
if (!PATH_H_PBUFFER(p_s_tb->tb_path, n_h)) {
if (!PATH_H_PBUFFER(tb->tb_path, n_h)) {
/* We have a positive insert size but no nodes exist on this
level, this means that we are creating a new root. */
RFALSE(p_s_tb->blknum[n_h] != 1,
RFALSE(tb->blknum[n_h] != 1,
"PAP-8350: creating new empty root");
if (n_h < MAX_HEIGHT - 1)
p_s_tb->insert_size[n_h + 1] = 0;
} else if (!PATH_H_PBUFFER(p_s_tb->tb_path, n_h + 1)) {
if (p_s_tb->blknum[n_h] > 1) {
tb->insert_size[n_h + 1] = 0;
} else if (!PATH_H_PBUFFER(tb->tb_path, n_h + 1)) {
if (tb->blknum[n_h] > 1) {
/* The tree needs to be grown, so this node S[n_h]
which is the root node is split into two nodes,
and a new node (S[n_h+1]) will be created to
@ -2447,19 +2449,20 @@ int fix_nodes(int n_op_mode, struct tree_balance *p_s_tb, struct item_head *p_s_
RFALSE(n_h == MAX_HEIGHT - 1,
"PAP-8355: attempt to create too high of a tree");
p_s_tb->insert_size[n_h + 1] =
tb->insert_size[n_h + 1] =
(DC_SIZE +
KEY_SIZE) * (p_s_tb->blknum[n_h] - 1) +
KEY_SIZE) * (tb->blknum[n_h] - 1) +
DC_SIZE;
} else if (n_h < MAX_HEIGHT - 1)
p_s_tb->insert_size[n_h + 1] = 0;
tb->insert_size[n_h + 1] = 0;
} else
p_s_tb->insert_size[n_h + 1] =
(DC_SIZE + KEY_SIZE) * (p_s_tb->blknum[n_h] - 1);
tb->insert_size[n_h + 1] =
(DC_SIZE + KEY_SIZE) * (tb->blknum[n_h] - 1);
}
if ((n_ret_value = wait_tb_buffers_until_unlocked(p_s_tb)) == CARRY_ON) {
if (FILESYSTEM_CHANGED_TB(p_s_tb)) {
n_ret_value = wait_tb_buffers_until_unlocked(tb);
if (n_ret_value == CARRY_ON) {
if (FILESYSTEM_CHANGED_TB(tb)) {
wait_tb_buffers_run = 1;
n_ret_value = REPEAT_SEARCH;
goto repeat;
@ -2482,50 +2485,49 @@ int fix_nodes(int n_op_mode, struct tree_balance *p_s_tb, struct item_head *p_s_
/* Release path buffers. */
if (wait_tb_buffers_run) {
pathrelse_and_restore(p_s_tb->tb_sb, p_s_tb->tb_path);
pathrelse_and_restore(tb->tb_sb, tb->tb_path);
} else {
pathrelse(p_s_tb->tb_path);
pathrelse(tb->tb_path);
}
/* brelse all resources collected for balancing */
for (i = 0; i < MAX_HEIGHT; i++) {
if (wait_tb_buffers_run) {
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->L[i]);
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->R[i]);
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->FL[i]);
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->FR[i]);
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->L[i]);
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->R[i]);
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->FL[i]);
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->FR[i]);
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->
CFL[i]);
reiserfs_restore_prepared_buffer(p_s_tb->tb_sb,
p_s_tb->
reiserfs_restore_prepared_buffer(tb->tb_sb,
tb->
CFR[i]);
}
brelse(p_s_tb->L[i]);
brelse(p_s_tb->R[i]);
brelse(p_s_tb->FL[i]);
brelse(p_s_tb->FR[i]);
brelse(p_s_tb->CFL[i]);
brelse(p_s_tb->CFR[i]);
brelse(tb->L[i]);
brelse(tb->R[i]);
brelse(tb->FL[i]);
brelse(tb->FR[i]);
brelse(tb->CFL[i]);
brelse(tb->CFR[i]);
p_s_tb->L[i] = NULL;
p_s_tb->R[i] = NULL;
p_s_tb->FL[i] = NULL;
p_s_tb->FR[i] = NULL;
p_s_tb->CFL[i] = NULL;
p_s_tb->CFR[i] = NULL;
tb->L[i] = NULL;
tb->R[i] = NULL;
tb->FL[i] = NULL;
tb->FR[i] = NULL;
tb->CFL[i] = NULL;
tb->CFR[i] = NULL;
}
if (wait_tb_buffers_run) {
for (i = 0; i < MAX_FEB_SIZE; i++) {
if (p_s_tb->FEB[i]) {
if (tb->FEB[i])
reiserfs_restore_prepared_buffer
(p_s_tb->tb_sb, p_s_tb->FEB[i]);
}
(tb->tb_sb, tb->FEB[i]);
}
}
return n_ret_value;
@ -2533,7 +2535,7 @@ int fix_nodes(int n_op_mode, struct tree_balance *p_s_tb, struct item_head *p_s_
}
/* Anatoly will probably forgive me renaming p_s_tb to tb. I just
/* Anatoly will probably forgive me renaming tb to tb. I just
wanted to make lines shorter */
void unfix_nodes(struct tree_balance *tb)
{

21
fs/reiserfs/stree.c
View File

@ -1063,17 +1063,17 @@ static char prepare_for_delete_or_cut(struct reiserfs_transaction_handle *th, st
}
/* Calculate number of bytes which will be deleted or cut during balance */
static int calc_deleted_bytes_number(struct tree_balance *p_s_tb, char c_mode)
static int calc_deleted_bytes_number(struct tree_balance *tb, char c_mode)
{
int n_del_size;
struct item_head *p_le_ih = PATH_PITEM_HEAD(p_s_tb->tb_path);
struct item_head *p_le_ih = PATH_PITEM_HEAD(tb->tb_path);
if (is_statdata_le_ih(p_le_ih))
return 0;
n_del_size =
(c_mode ==
M_DELETE) ? ih_item_len(p_le_ih) : -p_s_tb->insert_size[0];
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
@ -1083,25 +1083,26 @@ static int calc_deleted_bytes_number(struct tree_balance *p_s_tb, char c_mode)
}
if (is_indirect_le_ih(p_le_ih))
n_del_size = (n_del_size / UNFM_P_SIZE) * (PATH_PLAST_BUFFER(p_s_tb->tb_path)->b_size); // - get_ih_free_space (p_le_ih);
n_del_size = (n_del_size / UNFM_P_SIZE) *
(PATH_PLAST_BUFFER(tb->tb_path)->b_size);
return n_del_size;
}
static void init_tb_struct(struct reiserfs_transaction_handle *th,
struct tree_balance *p_s_tb,
struct tree_balance *tb,
struct super_block *sb,
struct treepath *p_s_path, int n_size)
{
BUG_ON(!th->t_trans_id);
memset(p_s_tb, '\0', sizeof(struct tree_balance));
p_s_tb->transaction_handle = th;
p_s_tb->tb_sb = sb;
p_s_tb->tb_path = p_s_path;
memset(tb, '\0', sizeof(struct tree_balance));
tb->transaction_handle = th;
tb->tb_sb = sb;
tb->tb_path = p_s_path;
PATH_OFFSET_PBUFFER(p_s_path, ILLEGAL_PATH_ELEMENT_OFFSET) = NULL;
PATH_OFFSET_POSITION(p_s_path, ILLEGAL_PATH_ELEMENT_OFFSET) = 0;
p_s_tb->insert_size[0] = n_size;
tb->insert_size[0] = n_size;
}
void padd_item(char *item, int total_length, int length)

2
include/linux/reiserfs_fs.h
View File

@ -2004,7 +2004,7 @@ extern const struct address_space_operations reiserfs_address_space_operations;
/* fix_nodes.c */
int fix_nodes(int n_op_mode, struct tree_balance *p_s_tb,
int fix_nodes(int n_op_mode, struct tree_balance *tb,
struct item_head *p_s_ins_ih, const void *);
void unfix_nodes(struct tree_balance *);