void ext2_error (struct super_block * sb, const char * function,
const char * fmt, ...)
{
va_list args;
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
if (!(sb->s_flags & MS_RDONLY)) {
sb->u.ext2_sb.s_mount_state |= EXT2_ERROR_FS;
es->s_state =
cpu_to_le16(le16_to_cpu(es->s_state) | EXT2_ERROR_FS);
ext2_sync_super(sb, es);
}
va_start (args, fmt);
vsprintf (error_buf, fmt, args);
va_end (args);
if (test_opt (sb, ERRORS_PANIC) ||
(le16_to_cpu(sb->u.ext2_sb.s_es->s_errors) == EXT2_ERRORS_PANIC &&
!test_opt (sb, ERRORS_CONT) && !test_opt (sb, ERRORS_RO)))
panic ("EXT2-fs panic (device %s): %s: %s\n",
bdevname(sb->s_dev), function, error_buf);
printk (KERN_CRIT "EXT2-fs error (device %s): %s: %s\n",
bdevname(sb->s_dev), function, error_buf);
if (test_opt (sb, ERRORS_RO) ||
(le16_to_cpu(sb->u.ext2_sb.s_es->s_errors) == EXT2_ERRORS_RO &&
!test_opt (sb, ERRORS_CONT) && !test_opt (sb, ERRORS_PANIC))) {
printk ("Remounting filesystem read-only\n");
sb->s_flags |= MS_RDONLY;
}
}
static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
{
int n = 0;
char b[BDEVNAME_SIZE];
if (block < 0) {
printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
block, bdevname(inode->i_sb->s_bdev, b));
} else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) {
if (printk_ratelimit())
printk("MINIX-fs: block_to_path: "
"block %ld too big on dev %s\n",
block, bdevname(inode->i_sb->s_bdev, b));
} else if (block < 7) {
offsets[n++] = block;
} else if ((block -= 7) < 512) {
offsets[n++] = 7;
offsets[n++] = block;
} else {
block -= 512;
offsets[n++] = 8;
offsets[n++] = block>>9;
offsets[n++] = block & 511;
}
return n;
}
static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
{
int n = 0;
char b[BDEVNAME_SIZE];
struct super_block *sb = inode->i_sb;
struct xiafs_sb_info *sbi = xiafs_sb(sb);
if (block < 0) {
printk("XIAFS-fs: block_to_path: block %ld < 0 on dev %s\n",
block, bdevname(sb->s_bdev, b));
} else if (block >= (xiafs_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
if (printk_ratelimit())
printk("XIAFS-fs: block_to_path: "
"block %ld too big on dev %s\n",
block, bdevname(sb->s_bdev, b));
} else if (block < 8) {
offsets[n++] = block;
} else if ((block -= 8) < XIAFS_ADDRS_PER_Z(sbi)) {
offsets[n++] = 8;
offsets[n++] = block;
} else {
block -= XIAFS_ADDRS_PER_Z(sbi);
offsets[n++] = 9;
offsets[n++] = block>>XIAFS_ADDRS_PER_Z_BITS(sbi);
offsets[n++] = block & (XIAFS_ADDRS_PER_Z(sbi)-1);
}
return n;
}
static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
{
int n = 0;
char b[BDEVNAME_SIZE];
struct super_block *sb = inode->i_sb;
if (block < 0) {
printk("MINIX-fs: block_to_path: block %ld < 0 on dev %s\n",
block, bdevname(sb->s_bdev, b));
} else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
if (printk_ratelimit())
printk("MINIX-fs: block_to_path: "
"block %ld too big on dev %s\n",
block, bdevname(sb->s_bdev, b));
} else if (block < DIRCOUNT) {
offsets[n++] = block;
} else if ((block -= DIRCOUNT) < INDIRCOUNT(sb)) {
offsets[n++] = DIRCOUNT;
offsets[n++] = block;
} else if ((block -= INDIRCOUNT(sb)) < INDIRCOUNT(sb) * INDIRCOUNT(sb)) {
offsets[n++] = DIRCOUNT + 1;
offsets[n++] = block / INDIRCOUNT(sb);
offsets[n++] = block % INDIRCOUNT(sb);
} else {
block -= INDIRCOUNT(sb) * INDIRCOUNT(sb);
offsets[n++] = DIRCOUNT + 2;
offsets[n++] = (block / INDIRCOUNT(sb)) / INDIRCOUNT(sb);
offsets[n++] = (block / INDIRCOUNT(sb)) % INDIRCOUNT(sb);
offsets[n++] = block % INDIRCOUNT(sb);
}
return n;
}
static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
{
int i, c, err;
sector_t curr_zone_end, sectors;
struct md_rdev *smallest, *rdev1, *rdev2, *rdev, **dev;
struct strip_zone *zone;
int cnt;
char b[BDEVNAME_SIZE];
char b2[BDEVNAME_SIZE];
struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
unsigned short blksize = 512;
*private_conf = ERR_PTR(-ENOMEM);
if (!conf)
return -ENOMEM;
rdev_for_each(rdev1, mddev) {
pr_debug("md/raid0:%s: looking at %s\n",
mdname(mddev),
bdevname(rdev1->bdev, b));
c = 0;
/* round size to chunk_size */
sectors = rdev1->sectors;
sector_div(sectors, mddev->chunk_sectors);
rdev1->sectors = sectors * mddev->chunk_sectors;
blksize = max(blksize, queue_logical_block_size(
rdev1->bdev->bd_disk->queue));
rdev_for_each(rdev2, mddev) {
pr_debug("md/raid0:%s: comparing %s(%llu)"
" with %s(%llu)\n",
mdname(mddev),
bdevname(rdev1->bdev,b),
(unsigned long long)rdev1->sectors,
bdevname(rdev2->bdev,b2),
(unsigned long long)rdev2->sectors);
if (rdev2 == rdev1) {
pr_debug("md/raid0:%s: END\n",
mdname(mddev));
break;
}
if (rdev2->sectors == rdev1->sectors) {
/*
* Not unique, don't count it as a new
* group
*/
pr_debug("md/raid0:%s: EQUAL\n",
mdname(mddev));
c = 1;
break;
}
pr_debug("md/raid0:%s: NOT EQUAL\n",
mdname(mddev));
}
static void bfs_read_inode(struct inode * inode)
{
unsigned long ino = inode->i_ino;
kdev_t dev = inode->i_dev;
struct bfs_inode * di;
struct buffer_head * bh;
int block, off;
if (ino < BFS_ROOT_INO || ino > inode->i_sb->su_lasti) {
printf("Bad inode number %s:%08lx\n", bdevname(dev), ino);
make_bad_inode(inode);
return;
}
block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
printf("Unable to read inode %s:%08lx\n", bdevname(dev), ino);
make_bad_inode(inode);
return;
}
off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
inode->i_mode = 0x0000FFFF & di->i_mode;
if (di->i_vtype == BFS_VDIR) {
inode->i_mode |= S_IFDIR;
inode->i_op = &bfs_dir_inops;
inode->i_fop = &bfs_dir_operations;
} else if (di->i_vtype == BFS_VREG) {
inode->i_mode |= S_IFREG;
inode->i_op = &bfs_file_inops;
inode->i_fop = &bfs_file_operations;
inode->i_mapping->a_ops = &bfs_aops;
}
inode->i_uid = di->i_uid;
inode->i_gid = di->i_gid;
inode->i_nlink = di->i_nlink;
inode->i_size = BFS_FILESIZE(di);
inode->i_blocks = BFS_FILEBLOCKS(di);
inode->i_blksize = PAGE_SIZE;
inode->i_atime = di->i_atime;
inode->i_mtime = di->i_mtime;
inode->i_ctime = di->i_ctime;
inode->iu_dsk_ino = di->i_ino; /* can be 0 so we store a copy */
inode->iu_sblock = di->i_sblock;
inode->iu_eblock = di->i_eblock;
brelse(bh);
}
int reiserfs_proc_info_init( struct super_block *sb )
{
spin_lock_init( & __PINFO( sb ).lock );
sb->u.reiserfs_sb.procdir = proc_mkdir( bdevname( sb -> s_dev ),
proc_info_root );
if( sb->u.reiserfs_sb.procdir ) {
sb->u.reiserfs_sb.procdir -> owner = THIS_MODULE;
return 0;
}
reiserfs_warning( "reiserfs: cannot create /proc/%s/%s\n",
proc_info_root_name, bdevname( sb -> s_dev ) );
return 1;
}
static ssize_t iblock_show_configfs_dev_params(
struct se_hba *hba,
struct se_subsystem_dev *se_dev,
char *b)
{
struct iblock_dev *ibd = se_dev->se_dev_su_ptr;
struct block_device *bd = ibd->ibd_bd;
char buf[BDEVNAME_SIZE];
ssize_t bl = 0;
if (bd)
bl += sprintf(b + bl, "iBlock device: %s",
bdevname(bd, buf));
if (ibd->ibd_flags & IBDF_HAS_UDEV_PATH)
bl += sprintf(b + bl, " UDEV PATH: %s",
ibd->ibd_udev_path);
bl += sprintf(b + bl, " readonly: %d\n", ibd->ibd_readonly);
bl += sprintf(b + bl, " ");
if (bd) {
bl += sprintf(b + bl, "Major: %d Minor: %d %s\n",
MAJOR(bd->bd_dev), MINOR(bd->bd_dev), (!bd->bd_contains) ?
"" : (bd->bd_holder == ibd) ?
"CLAIMED: IBLOCK" : "CLAIMED: OS");
} else {
bl += sprintf(b + bl, "Major: 0 Minor: 0\n");
}
return bl;
}
/**
* blk_trace_ioctl: - handle the ioctls associated with tracing
* @bdev: the block device
* @cmd: the ioctl cmd
* @arg: the argument data, if any
*
**/
int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
{
struct request_queue *q;
int ret, start = 0;
char b[BDEVNAME_SIZE];
q = bdev_get_queue(bdev);
if (!q)
return -ENXIO;
mutex_lock(&bdev->bd_mutex);
switch (cmd) {
case BLKTRACESETUP:
bdevname(bdev, b);
ret = blk_trace_setup(q, b, bdev->bd_dev, bdev, arg);
break;
case BLKTRACESTART:
start = 1;
case BLKTRACESTOP:
ret = blk_trace_startstop(q, start);
break;
case BLKTRACETEARDOWN:
ret = blk_trace_remove(q);
break;
default:
ret = -ENOTTY;
break;
}
mutex_unlock(&bdev->bd_mutex);
return ret;
}
// Dumps block info
void dump(struct bio *bio) {
if (!head) {
// initialize linked list
tail = head = read_p = kmalloc(sizeof(struct sp_io), GFP_KERNEL);
if (!tail) {
// Exception handling
printk("SP kmalloc failed!\n");
return;
}
} else {
struct sp_io *temp = kmalloc(sizeof(struct sp_io), GFP_KERNEL);
if (!temp) {
// Exception handling
printk("SP kmalloc failed!\n");
return;
}
tail->next = temp;
tail = temp;
}
// initialize sp_io struct
tail->sector = bio->bi_sector;
// get device name
bdevname(bio->bi_bdev, tail->dev_name);
tail->count = bio_sectors(bio);
struct timespec current_time;
getnstimeofday(¤t_time);
tail->sec = current_time.tv_sec;
tail->nsec = current_time.tv_nsec;
}
/*
* inform the user of the raid configuration
*/
static void dump_zones(struct mddev *mddev)
{
int j, k;
sector_t zone_size = 0;
sector_t zone_start = 0;
char b[BDEVNAME_SIZE];
struct r0conf *conf = mddev->private;
int raid_disks = conf->strip_zone[0].nb_dev;
printk(KERN_INFO "md: RAID0 configuration for %s - %d zone%s\n",
mdname(mddev),
conf->nr_strip_zones, conf->nr_strip_zones==1?"":"s");
for (j = 0; j < conf->nr_strip_zones; j++) {
printk(KERN_INFO "md: zone%d=[", j);
for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
printk(KERN_CONT "%s%s", k?"/":"",
bdevname(conf->devlist[j*raid_disks
+ k]->bdev, b));
printk(KERN_CONT "]\n");
zone_size = conf->strip_zone[j].zone_end - zone_start;
printk(KERN_INFO " zone-offset=%10lluKB, "
"device-offset=%10lluKB, size=%10lluKB\n",
(unsigned long long)zone_start>>1,
(unsigned long long)conf->strip_zone[j].dev_start>>1,
(unsigned long long)zone_size>>1);
zone_start = conf->strip_zone[j].zone_end;
}
printk(KERN_INFO "\n");
}
/*
* Conversion of logical to physical block numbers for the journal
*
* On external journals the journal blocks are identity-mapped, so
* this is a no-op. If needed, we can use j_blk_offset - everything is
* ready.
*/
int journal_bmap(journal_t *journal, unsigned int blocknr,
unsigned int *retp)
{
int err = 0;
unsigned int ret;
if (journal->j_inode) {
ret = bmap(journal->j_inode, blocknr);
if (ret)
*retp = ret;
else {
char b[BDEVNAME_SIZE];
printk(KERN_ALERT "%s: journal block not found "
"at offset %u on %s\n",
__func__,
blocknr,
bdevname(journal->j_dev, b));
err = -EIO;
__journal_abort_soft(journal, err);
}
} else {
*retp = blocknr; /* +journal->j_blk_offset */
}
return err;
}
/*
* Careful, this can execute in IRQ contexts as well!
*/
static void multipath_error (mddev_t *mddev, mdk_rdev_t *rdev)
{
multipath_conf_t *conf = mddev_to_conf(mddev);
if (conf->working_disks <= 1) {
/*
* Uh oh, we can do nothing if this is our last path, but
* first check if this is a queued request for a device
* which has just failed.
*/
printk(KERN_ALERT
"multipath: only one IO path left and IO error.\n");
/* leave it active... it's all we have */
} else {
/*
* Mark disk as unusable
*/
if (!test_bit(Faulty, &rdev->flags)) {
char b[BDEVNAME_SIZE];
clear_bit(In_sync, &rdev->flags);
set_bit(Faulty, &rdev->flags);
mddev->sb_dirty = 1;
conf->working_disks--;
printk(KERN_ALERT "multipath: IO failure on %s,"
" disabling IO path. \n Operation continuing"
" on %d IO paths.\n",
bdevname (rdev->bdev,b),
conf->working_disks);
}
}
}
static int multipath_end_request(struct bio *bio, unsigned int bytes_done,
int error)
{
int uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags);
struct multipath_bh * mp_bh = (struct multipath_bh *)(bio->bi_private);
multipath_conf_t *conf = mddev_to_conf(mp_bh->mddev);
mdk_rdev_t *rdev = conf->multipaths[mp_bh->path].rdev;
if (bio->bi_size)
return 1;
if (uptodate)
multipath_end_bh_io(mp_bh, 0);
else if (!bio_rw_ahead(bio)) {
/*
* oops, IO error:
*/
char b[BDEVNAME_SIZE];
md_error (mp_bh->mddev, rdev);
printk(KERN_ERR "multipath: %s: rescheduling sector %llu\n",
bdevname(rdev->bdev,b),
(unsigned long long)bio->bi_sector);
multipath_reschedule_retry(mp_bh);
} else
multipath_end_bh_io(mp_bh, error);
rdev_dec_pending(rdev, conf->mddev);
return 0;
}
/*
* inform the user of the raid configuration
*/
static void dump_zones(struct mddev *mddev)
{
int j, k;
sector_t zone_size = 0;
sector_t zone_start = 0;
char b[BDEVNAME_SIZE];
struct r0conf *conf = mddev->private;
int raid_disks = conf->strip_zone[0].nb_dev;
pr_debug("md: RAID0 configuration for %s - %d zone%s\n",
mdname(mddev),
conf->nr_strip_zones, conf->nr_strip_zones==1?"":"s");
for (j = 0; j < conf->nr_strip_zones; j++) {
char line[200];
int len = 0;
for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
len += snprintf(line+len, 200-len, "%s%s", k?"/":"",
bdevname(conf->devlist[j*raid_disks
+ k]->bdev, b));
pr_debug("md: zone%d=[%s]\n", j, line);
zone_size = conf->strip_zone[j].zone_end - zone_start;
pr_debug(" zone-offset=%10lluKB, device-offset=%10lluKB, size=%10lluKB\n",
(unsigned long long)zone_start>>1,
(unsigned long long)conf->strip_zone[j].dev_start>>1,
(unsigned long long)zone_size>>1);
zone_start = conf->strip_zone[j].zone_end;
}
}
ssize_t diskdump_sysfs_show_disk(struct gendisk *disk, char *buf)
{
struct block_device *bdev;
int part, tmp, len = 0, maxlen = 1024;
char* p = buf;
char name[BDEVNAME_SIZE];
if (!dump_ops || !dump_ops->find_dump)
return 0;
if (!disk->part)
return 0;
/* print device */
down(&dump_ops_mutex);
for (part = 0; part < disk->minors; part++) {
bdev = bdget_disk(disk, part);
if (dump_ops->find_dump(bdev)) {
tmp = sprintf(p, "%s\n", bdevname(bdev, name));
len += tmp;
p += tmp;
}
bdput(bdev);
if(len >= maxlen)
break;
}
up(&dump_ops_mutex);
return len;
}
/*
* This routine checks whether a removable media has been changed,
* and invalidates all buffer-cache-entries in that case. This
* is a relatively slow routine, so we have to try to minimize using
* it. Thus it is called only upon a 'mount' or 'open'. This
* is the best way of combining speed and utility, I think.
* People changing diskettes in the middle of an operation deserve
* to loose :-)
*/
int check_disk_change(kdev_t dev)
{
int i;
struct file_operations * fops;
struct super_block * sb;
i = MAJOR(dev);
if (i >= MAX_BLKDEV || (fops = blkdevs[i].fops) == NULL)
return 0;
if (fops->check_media_change == NULL)
return 0;
if (!fops->check_media_change(dev))
return 0;
printk(KERN_DEBUG "VFS: Disk change detected on device %s\n",
bdevname(dev));
sb = get_super(dev);
if (sb && invalidate_inodes(sb))
printk("VFS: busy inodes on changed media.\n");
invalidate_buffers(dev);
if (fops->revalidate)
fops->revalidate(dev);
return 1;
}
/*
* Print an buffer I/O error compatible with the fs/buffer.c. This
* provides compatibility with dmesg scrapers that look for a specific
* buffer I/O error message. We really need a unified error reporting
* structure to userspace ala Digital Unix's uerf system, but it's
* probably not going to happen in my lifetime, due to LKML politics...
*/
static void buffer_io_error(struct buffer_head *bh)
{
char b[BDEVNAME_SIZE];
printk_ratelimited(KERN_ERR "Buffer I/O error on device %s, logical block %llu\n",
bdevname(bh->b_bdev, b),
(unsigned long long)bh->b_blocknr);
}
/*
* This must be called after early kernel init, since then the rootdev
* is available.
*/
static void check_pinning_enforcement(struct super_block *mnt_sb)
{
bool ro = false;
/*
* If load pinning is not enforced via a read-only block
* device, allow sysctl to change modes for testing.
*/
if (mnt_sb->s_bdev) {
char bdev[BDEVNAME_SIZE];
ro = bdev_read_only(mnt_sb->s_bdev);
bdevname(mnt_sb->s_bdev, bdev);
pr_info("%s (%u:%u): %s\n", bdev,
MAJOR(mnt_sb->s_bdev->bd_dev),
MINOR(mnt_sb->s_bdev->bd_dev),
ro ? "read-only" : "writable");
} else
pr_info("mnt_sb lacks block device, treating as: writable\n");
if (!ro) {
if (!register_sysctl_paths(loadpin_sysctl_path,
loadpin_sysctl_table))
pr_notice("sysctl registration failed!\n");
else
pr_info("enforcement can be disabled.\n");
} else
pr_info("load pinning engaged.\n");
}
/* Done it all: now write the commit record. We should have
* cleaned up our previous buffers by now, so if we are in abort
* mode we can now just skip the rest of the journal write
* entirely.
*
* Returns 1 if the journal needs to be aborted or 0 on success
*/
static int journal_write_commit_record(journal_t *journal,
transaction_t *commit_transaction)
{
struct journal_head *descriptor;
struct buffer_head *bh;
int i, ret;
int barrier_done = 0;
if (is_journal_aborted(journal))
return 0;
descriptor = jbd2_journal_get_descriptor_buffer(journal);
if (!descriptor)
return 1;
bh = jh2bh(descriptor);
/* AKPM: buglet - add `i' to tmp! */
for (i = 0; i < bh->b_size; i += 512) {
journal_header_t *tmp = (journal_header_t*)bh->b_data;
tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER);
tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK);
tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid);
}
JBUFFER_TRACE(descriptor, "write commit block");
set_buffer_dirty(bh);
if (journal->j_flags & JBD2_BARRIER) {
set_buffer_ordered(bh);
barrier_done = 1;
}
ret = sync_dirty_buffer(bh);
/* is it possible for another commit to fail at roughly
* the same time as this one? If so, we don't want to
* trust the barrier flag in the super, but instead want
* to remember if we sent a barrier request
*/
if (ret == -EOPNOTSUPP && barrier_done) {
char b[BDEVNAME_SIZE];
printk(KERN_WARNING
"JBD: barrier-based sync failed on %s - "
"disabling barriers\n",
bdevname(journal->j_dev, b));
spin_lock(&journal->j_state_lock);
journal->j_flags &= ~JBD2_BARRIER;
spin_unlock(&journal->j_state_lock);
/* And try again, without the barrier */
clear_buffer_ordered(bh);
set_buffer_uptodate(bh);
set_buffer_dirty(bh);
ret = sync_dirty_buffer(bh);
}
put_bh(bh); /* One for getblk() */
jbd2_journal_put_journal_head(descriptor);
return (ret == -EIO);
}
/* Done it all: now write the commit record. We should have
* cleaned up our previous buffers by now, so if we are in abort
* mode we can now just skip the rest of the journal write
* entirely.
*
* Returns 1 if the journal needs to be aborted or 0 on success
*/
static int journal_write_commit_record(journal_t *journal,
transaction_t *commit_transaction)
{
struct journal_head *descriptor;
struct buffer_head *bh;
journal_header_t *header;
int ret;
if (is_journal_aborted(journal))
return 0;
descriptor = journal_get_descriptor_buffer(journal);
if (!descriptor)
return 1;
bh = jh2bh(descriptor);
header = (journal_header_t *)(bh->b_data);
header->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER);
header->h_blocktype = cpu_to_be32(JFS_COMMIT_BLOCK);
header->h_sequence = cpu_to_be32(commit_transaction->t_tid);
JBUFFER_TRACE(descriptor, "write commit block");
set_buffer_dirty(bh);
if (journal->j_flags & JFS_BARRIER) {
ret = __sync_dirty_buffer(bh, WRITE_SYNC | WRITE_BARRIER);
/*
* Is it possible for another commit to fail at roughly
* the same time as this one? If so, we don't want to
* trust the barrier flag in the super, but instead want
* to remember if we sent a barrier request
*/
if (ret == -EOPNOTSUPP) {
char b[BDEVNAME_SIZE];
printk(KERN_WARNING
"JBD: barrier-based sync failed on %s - "
"disabling barriers\n",
bdevname(journal->j_dev, b));
spin_lock(&journal->j_state_lock);
journal->j_flags &= ~JFS_BARRIER;
spin_unlock(&journal->j_state_lock);
/* And try again, without the barrier */
set_buffer_uptodate(bh);
set_buffer_dirty(bh);
ret = sync_dirty_buffer(bh);
}
} else {
ret = sync_dirty_buffer(bh);
}
put_bh(bh); /* One for getblk() */
journal_put_journal_head(descriptor);
return (ret == -EIO);
}
static void bfs_write_inode(struct inode * inode, int unused)
{
unsigned long ino = inode->i_ino;
kdev_t dev = inode->i_dev;
struct bfs_inode * di;
struct buffer_head * bh;
int block, off;
if (ino < BFS_ROOT_INO || ino > inode->i_sb->su_lasti) {
printf("Bad inode number %s:%08lx\n", bdevname(dev), ino);
return;
}
lock_kernel();
block = (ino - BFS_ROOT_INO)/BFS_INODES_PER_BLOCK + 1;
bh = sb_bread(inode->i_sb, block);
if (!bh) {
printf("Unable to read inode %s:%08lx\n", bdevname(dev), ino);
unlock_kernel();
return;
}
off = (ino - BFS_ROOT_INO)%BFS_INODES_PER_BLOCK;
di = (struct bfs_inode *)bh->b_data + off;
if (inode->i_ino == BFS_ROOT_INO)
di->i_vtype = BFS_VDIR;
else
di->i_vtype = BFS_VREG;
di->i_ino = inode->i_ino;
di->i_mode = inode->i_mode;
di->i_uid = inode->i_uid;
di->i_gid = inode->i_gid;
di->i_nlink = inode->i_nlink;
di->i_atime = inode->i_atime;
di->i_mtime = inode->i_mtime;
di->i_ctime = inode->i_ctime;
di->i_sblock = inode->iu_sblock;
di->i_eblock = inode->iu_eblock;
di->i_eoffset = di->i_sblock * BFS_BSIZE + inode->i_size - 1;
mark_buffer_dirty(bh);
brelse(bh);
unlock_kernel();
}
static int create_strip_zones (mddev_t *mddev)
{
int i, c, j;
sector_t current_offset, curr_zone_offset;
sector_t min_spacing;
raid0_conf_t *conf = mddev_to_conf(mddev);
mdk_rdev_t *smallest, *rdev1, *rdev2, *rdev;
struct list_head *tmp1, *tmp2;
struct strip_zone *zone;
int cnt;
char b[BDEVNAME_SIZE];
/*
* The number of 'same size groups'
*/
conf->nr_strip_zones = 0;
rdev_for_each(rdev1, tmp1, mddev) {
printk("raid0: looking at %s\n",
bdevname(rdev1->bdev,b));
c = 0;
rdev_for_each(rdev2, tmp2, mddev) {
printk("raid0: comparing %s(%llu)",
bdevname(rdev1->bdev,b),
(unsigned long long)rdev1->size);
printk(" with %s(%llu)\n",
bdevname(rdev2->bdev,b),
(unsigned long long)rdev2->size);
if (rdev2 == rdev1) {
printk("raid0: END\n");
break;
}
if (rdev2->size == rdev1->size)
{
/*
* Not unique, don't count it as a new
* group
*/
printk("raid0: EQUAL\n");
c = 1;
break;
}
printk("raid0: NOT EQUAL\n");
}
static void warn_dirty_buffer(struct buffer_head *bh)
{
char b[BDEVNAME_SIZE];
printk(KERN_WARNING
"JBD: Spotted dirty metadata buffer (dev = %s, blocknr = %llu). "
"There's a risk of filesystem corruption in case of system "
"crash.\n",
bdevname(bh->b_bdev, b), (unsigned long long)bh->b_blocknr);
}
void ext2_warning (struct super_block * sb, const char * function,
const char * fmt, ...)
{
va_list args;
va_start (args, fmt);
vsprintf (error_buf, fmt, args);
va_end (args);
printk (KERN_WARNING "EXT2-fs warning (device %s): %s: %s\n",
bdevname(sb->s_dev), function, error_buf);
}
int reiserfs_proc_info_done( struct super_block *sb )
{
spin_lock( & __PINFO( sb ).lock );
__PINFO( sb ).exiting = 1;
spin_unlock( & __PINFO( sb ).lock );
if ( proc_info_root ) {
remove_proc_entry( bdevname( sb -> s_dev ), proc_info_root );
sb->u.reiserfs_sb.procdir = NULL;
}
return 0;
}
static void multipathd(struct md_thread *thread)
{
for (;;) {
if ((mp_bh->path = multipath_map (conf))<0) {
printk(KERN_ERR "multipath: %s: redirecting sector %llu"
" to another IO path\n",
bdevname(bio->bi_bdev,b),
(unsigned long long)bio->bi_iter.bi_sector);
}
}
}
int sgi_partition(struct parsed_partitions *state)
{
int i, csum;
__be32 magic;
int slot = 1;
unsigned int start, blocks;
__be32 *ui, cs;
Sector sect;
struct sgi_disklabel *label;
struct sgi_partition *p;
char b[BDEVNAME_SIZE];
label = read_part_sector(state, 0, §);
if (!label)
return -1;
p = &label->partitions[0];
magic = label->magic_mushroom;
if(be32_to_cpu(magic) != SGI_LABEL_MAGIC) {
/*
*/
put_dev_sector(sect);
return 0;
}
ui = ((__be32 *) (label + 1)) - 1;
for(csum = 0; ui >= ((__be32 *) label);) {
cs = *ui--;
csum += be32_to_cpu(cs);
}
if(csum) {
printk(KERN_WARNING "Dev %s SGI disklabel: csum bad, label corrupted\n",
bdevname(state->bdev, b));
put_dev_sector(sect);
return 0;
}
/*
*/
for(i = 0; i < 16; i++, p++) {
blocks = be32_to_cpu(p->num_blocks);
start = be32_to_cpu(p->first_block);
if (blocks) {
put_partition(state, slot, start, blocks);
if (be32_to_cpu(p->type) == LINUX_RAID_PARTITION)
state->parts[slot].flags = ADDPART_FLAG_RAID;
}
slot++;
}
strlcat(state->pp_buf, "\n", PAGE_SIZE);
put_dev_sector(sect);
return 1;
}
int ext2_remount (struct super_block * sb, int * flags, char * data)
{
struct ext2_super_block * es;
unsigned short resuid = sb->u.ext2_sb.s_resuid;
unsigned short resgid = sb->u.ext2_sb.s_resgid;
unsigned long new_mount_opt;
unsigned long tmp;
/*
* Allow the "check" option to be passed as a remount option.
*/
new_mount_opt = sb->u.ext2_sb.s_mount_opt;
if (!parse_options (data, &tmp, &resuid, &resgid,
&new_mount_opt))
return -EINVAL;
sb->u.ext2_sb.s_mount_opt = new_mount_opt;
sb->u.ext2_sb.s_resuid = resuid;
sb->u.ext2_sb.s_resgid = resgid;
es = sb->u.ext2_sb.s_es;
if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
return 0;
if (*flags & MS_RDONLY) {
if (le16_to_cpu(es->s_state) & EXT2_VALID_FS ||
!(sb->u.ext2_sb.s_mount_state & EXT2_VALID_FS))
return 0;
/*
* OK, we are remounting a valid rw partition rdonly, so set
* the rdonly flag and then mark the partition as valid again.
*/
es->s_state = cpu_to_le16(sb->u.ext2_sb.s_mount_state);
es->s_mtime = cpu_to_le32(CURRENT_TIME);
} else {
int ret;
if ((ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
~EXT2_FEATURE_RO_COMPAT_SUPP))) {
printk("EXT2-fs: %s: couldn't remount RDWR because of "
"unsupported optional features (%x).\n",
bdevname(sb->s_dev), ret);
return -EROFS;
}
/*
* Mounting a RDONLY partition read-write, so reread and
* store the current valid flag. (It may have been changed
* by e2fsck since we originally mounted the partition.)
*/
sb->u.ext2_sb.s_mount_state = le16_to_cpu(es->s_state);
if (!ext2_setup_super (sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
}
ext2_sync_super(sb, es);
return 0;
}
int sgi_partition(struct parsed_partitions *state, struct block_device *bdev)
{
int i, csum;
__be32 magic;
int slot = 1;
unsigned int start, blocks;
__be32 *ui, cs;
Sector sect;
struct sgi_disklabel *label;
struct sgi_partition *p;
char b[BDEVNAME_SIZE];
label = (struct sgi_disklabel *) read_dev_sector(bdev, 0, §);
if (!label)
return -1;
p = &label->partitions[0];
magic = label->magic_mushroom;
if(be32_to_cpu(magic) != SGI_LABEL_MAGIC) {
/*printk("Dev %s SGI disklabel: bad magic %08x\n",
bdevname(bdev, b), be32_to_cpu(magic));*/
put_dev_sector(sect);
return 0;
}
ui = ((__be32 *) (label + 1)) - 1;
for(csum = 0; ui >= ((__be32 *) label);) {
cs = *ui--;
csum += be32_to_cpu(cs);
}
if(csum) {
printk(KERN_WARNING "Dev %s SGI disklabel: csum bad, label corrupted\n",
bdevname(bdev, b));
put_dev_sector(sect);
return 0;
}
/* All SGI disk labels have 16 partitions, disks under Linux only
* have 15 minor's. Luckily there are always a few zero length
* partitions which we don't care about so we never overflow the
* current_minor.
*/
for(i = 0; i < 16; i++, p++) {
blocks = be32_to_cpu(p->num_blocks);
start = be32_to_cpu(p->first_block);
if (blocks) {
put_partition(state, slot, start, blocks);
if (be32_to_cpu(p->type) == LINUX_RAID_PARTITION)
state->parts[slot].flags = ADDPART_FLAG_RAID;
}
slot++;
}
printk("\n");
put_dev_sector(sect);
return 1;
}
