Release 4.11 fs/ufs/util.c
/*
* linux/fs/ufs/util.c
*
* Copyright (C) 1998
* Daniel Pirkl <daniel.pirkl@email.cz>
* Charles University, Faculty of Mathematics and Physics
*/
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/buffer_head.h>
#include "ufs_fs.h"
#include "ufs.h"
#include "swab.h"
#include "util.h"
struct ufs_buffer_head * _ubh_bread_ (struct ufs_sb_private_info * uspi,
struct super_block *sb, u64 fragment, u64 size)
{
struct ufs_buffer_head * ubh;
unsigned i, j ;
u64 count = 0;
if (size & ~uspi->s_fmask)
return NULL;
count = size >> uspi->s_fshift;
if (count > UFS_MAXFRAG)
return NULL;
ubh = kmalloc (sizeof (struct ufs_buffer_head), GFP_NOFS);
if (!ubh)
return NULL;
ubh->fragment = fragment;
ubh->count = count;
for (i = 0; i < count; i++)
if (!(ubh->bh[i] = sb_bread(sb, fragment + i)))
goto failed;
for (; i < UFS_MAXFRAG; i++)
ubh->bh[i] = NULL;
return ubh;
failed:
for (j = 0; j < i; j++)
brelse (ubh->bh[j]);
kfree(ubh);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 174 | 90.62% | 1 | 20.00% |
| Andrew Morton | 11 | 5.73% | 2 | 40.00% |
| Linus Torvalds | 6 | 3.12% | 1 | 20.00% |
| Arnd Bergmann | 1 | 0.52% | 1 | 20.00% |
| Total | 192 | 100.00% | 5 | 100.00% |
struct ufs_buffer_head * ubh_bread_uspi (struct ufs_sb_private_info * uspi,
struct super_block *sb, u64 fragment, u64 size)
{
unsigned i, j;
u64 count = 0;
if (size & ~uspi->s_fmask)
return NULL;
count = size >> uspi->s_fshift;
if (count <= 0 || count > UFS_MAXFRAG)
return NULL;
USPI_UBH(uspi)->fragment = fragment;
USPI_UBH(uspi)->count = count;
for (i = 0; i < count; i++)
if (!(USPI_UBH(uspi)->bh[i] = sb_bread(sb, fragment + i)))
goto failed;
for (; i < UFS_MAXFRAG; i++)
USPI_UBH(uspi)->bh[i] = NULL;
return USPI_UBH(uspi);
failed:
for (j = 0; j < i; j++)
brelse (USPI_UBH(uspi)->bh[j]);
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 153 | 83.61% | 2 | 40.00% |
| Evgeniy Dushistov | 18 | 9.84% | 1 | 20.00% |
| Andrew Morton | 6 | 3.28% | 1 | 20.00% |
| Linus Torvalds | 6 | 3.28% | 1 | 20.00% |
| Total | 183 | 100.00% | 5 | 100.00% |
void ubh_brelse (struct ufs_buffer_head * ubh)
{
unsigned i;
if (!ubh)
return;
for (i = 0; i < ubh->count; i++)
brelse (ubh->bh[i]);
kfree (ubh);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 49 | 100.00% | 1 | 100.00% |
| Total | 49 | 100.00% | 1 | 100.00% |
void ubh_brelse_uspi (struct ufs_sb_private_info * uspi)
{
unsigned i;
if (!USPI_UBH(uspi))
return;
for ( i = 0; i < USPI_UBH(uspi)->count; i++ ) {
brelse (USPI_UBH(uspi)->bh[i]);
USPI_UBH(uspi)->bh[i] = NULL;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 55 | 82.09% | 2 | 66.67% |
| Evgeniy Dushistov | 12 | 17.91% | 1 | 33.33% |
| Total | 67 | 100.00% | 3 | 100.00% |
void ubh_mark_buffer_dirty (struct ufs_buffer_head * ubh)
{
unsigned i;
if (!ubh)
return;
for ( i = 0; i < ubh->count; i++ )
mark_buffer_dirty (ubh->bh[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 44 | 100.00% | 1 | 100.00% |
| Total | 44 | 100.00% | 1 | 100.00% |
void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag)
{
unsigned i;
if (!ubh)
return;
if (flag) {
for ( i = 0; i < ubh->count; i++ )
set_buffer_uptodate (ubh->bh[i]);
} else {
for ( i = 0; i < ubh->count; i++ )
clear_buffer_uptodate (ubh->bh[i]);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 46 | 56.79% | 1 | 50.00% |
| Andrew Morton | 35 | 43.21% | 1 | 50.00% |
| Total | 81 | 100.00% | 2 | 100.00% |
void ubh_sync_block(struct ufs_buffer_head *ubh)
{
if (ubh) {
unsigned i;
for (i = 0; i < ubh->count; i++)
write_dirty_buffer(ubh->bh[i], 0);
for (i = 0; i < ubh->count; i++)
wait_on_buffer(ubh->bh[i]);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 46 | 64.79% | 1 | 33.33% |
| Christoph Hellwig | 24 | 33.80% | 1 | 33.33% |
| Michael Christie | 1 | 1.41% | 1 | 33.33% |
| Total | 71 | 100.00% | 3 | 100.00% |
void ubh_bforget (struct ufs_buffer_head * ubh)
{
unsigned i;
if (!ubh)
return;
for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] )
bforget (ubh->bh[i]);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 53 | 100.00% | 1 | 100.00% |
| Total | 53 | 100.00% | 1 | 100.00% |
int ubh_buffer_dirty (struct ufs_buffer_head * ubh)
{
unsigned i;
unsigned result = 0;
if (!ubh)
return 0;
for ( i = 0; i < ubh->count; i++ )
result |= buffer_dirty(ubh->bh[i]);
return result;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 56 | 100.00% | 1 | 100.00% |
| Total | 56 | 100.00% | 1 | 100.00% |
void _ubh_ubhcpymem_(struct ufs_sb_private_info * uspi,
unsigned char * mem, struct ufs_buffer_head * ubh, unsigned size)
{
unsigned len, bhno;
if (size > (ubh->count << uspi->s_fshift))
size = ubh->count << uspi->s_fshift;
bhno = 0;
while (size) {
len = min_t(unsigned int, size, uspi->s_fsize);
memcpy (mem, ubh->bh[bhno]->b_data, len);
mem += uspi->s_fsize;
size -= len;
bhno++;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 97 | 95.10% | 1 | 33.33% |
| Linus Torvalds | 5 | 4.90% | 2 | 66.67% |
| Total | 102 | 100.00% | 3 | 100.00% |
void _ubh_memcpyubh_(struct ufs_sb_private_info * uspi,
struct ufs_buffer_head * ubh, unsigned char * mem, unsigned size)
{
unsigned len, bhno;
if (size > (ubh->count << uspi->s_fshift))
size = ubh->count << uspi->s_fshift;
bhno = 0;
while (size) {
len = min_t(unsigned int, size, uspi->s_fsize);
memcpy (ubh->bh[bhno]->b_data, mem, len);
mem += uspi->s_fsize;
size -= len;
bhno++;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 97 | 95.10% | 1 | 33.33% |
| Linus Torvalds | 5 | 4.90% | 2 | 66.67% |
| Total | 102 | 100.00% | 3 | 100.00% |
dev_t
ufs_get_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi)
{
__u32 fs32;
dev_t dev;
if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[1]);
else
fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[0]);
switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
case UFS_ST_SUNx86:
case UFS_ST_SUN:
if ((fs32 & 0xffff0000) == 0 ||
(fs32 & 0xffff0000) == 0xffff0000)
dev = old_decode_dev(fs32 & 0x7fff);
else
dev = MKDEV(sysv_major(fs32), sysv_minor(fs32));
break;
default:
dev = old_decode_dev(fs32);
break;
}
return dev;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alex Kiernan | 134 | 93.06% | 1 | 50.00% |
| Al Viro | 10 | 6.94% | 1 | 50.00% |
| Total | 144 | 100.00% | 2 | 100.00% |
void
ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev)
{
__u32 fs32;
switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
case UFS_ST_SUNx86:
case UFS_ST_SUN:
fs32 = sysv_encode_dev(dev);
if ((fs32 & 0xffff8000) == 0) {
fs32 = old_encode_dev(dev);
}
break;
default:
fs32 = old_encode_dev(dev);
break;
}
if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
ufsi->i_u1.i_data[1] = cpu_to_fs32(sb, fs32);
else
ufsi->i_u1.i_data[0] = cpu_to_fs32(sb, fs32);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Alex Kiernan | 113 | 91.13% | 1 | 50.00% |
| Al Viro | 11 | 8.87% | 1 | 50.00% |
| Total | 124 | 100.00% | 2 | 100.00% |
/**
* ufs_get_locked_page() - locate, pin and lock a pagecache page, if not exist
* read it from disk.
* @mapping: the address_space to search
* @index: the page index
*
* Locates the desired pagecache page, if not exist we'll read it,
* locks it, increments its reference
* count and returns its address.
*
*/
struct page *ufs_get_locked_page(struct address_space *mapping,
pgoff_t index)
{
struct page *page;
page = find_lock_page(mapping, index);
if (!page) {
page = read_mapping_page(mapping, index, NULL);
if (IS_ERR(page)) {
printk(KERN_ERR "ufs_change_blocknr: "
"read_mapping_page error: ino %lu, index: %lu\n",
mapping->host->i_ino, index);
goto out;
}
lock_page(page);
if (unlikely(page->mapping == NULL)) {
/* Truncate got there first */
unlock_page(page);
put_page(page);
page = NULL;
goto out;
}
if (!PageUptodate(page) || PageError(page)) {
unlock_page(page);
put_page(page);
printk(KERN_ERR "ufs_change_blocknr: "
"can not read page: ino %lu, index: %lu\n",
mapping->host->i_ino, index);
page = ERR_PTR(-EIO);
}
}
out:
return page;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Evgeniy Dushistov | 159 | 97.55% | 3 | 60.00% |
| Kirill A. Shutemov | 2 | 1.23% | 1 | 20.00% |
| Nicholas Piggin | 2 | 1.23% | 1 | 20.00% |
| Total | 163 | 100.00% | 5 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 882 | 60.66% | 4 | 15.38% |
| Alex Kiernan | 247 | 16.99% | 1 | 3.85% |
| Evgeniy Dushistov | 190 | 13.07% | 4 | 15.38% |
| Andrew Morton | 52 | 3.58% | 3 | 11.54% |
| Christoph Hellwig | 29 | 1.99% | 3 | 11.54% |
| Linus Torvalds | 25 | 1.72% | 5 | 19.23% |
| Al Viro | 21 | 1.44% | 1 | 3.85% |
| Kirill A. Shutemov | 2 | 0.14% | 1 | 3.85% |
| Mike Frysinger | 2 | 0.14% | 1 | 3.85% |
| Nicholas Piggin | 2 | 0.14% | 1 | 3.85% |
| Michael Christie | 1 | 0.07% | 1 | 3.85% |
| Arnd Bergmann | 1 | 0.07% | 1 | 3.85% |
| Total | 1454 | 100.00% | 26 | 100.00% |
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