[PATCH] ufs2 write: block allocation update
Patch adds ability to work with 64bit metadata, this made by replacing work
with 32bit pointers by inline functions.
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index dd52eec..fb34ad0 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -170,7 +170,7 @@
* @locked_page - for ufs_new_fragments()
*/
static struct buffer_head *
-ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
+ufs_inode_getfrag(struct inode *inode, u64 fragment,
sector_t new_fragment, unsigned int required, int *err,
long *phys, int *new, struct page *locked_page)
{
@@ -178,12 +178,12 @@
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
- unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
- unsigned tmp, goal;
- __fs32 * p, * p2;
+ unsigned blockoff, lastblockoff;
+ u64 tmp, goal, lastfrag, block, lastblock;
+ void *p, *p2;
- UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, "
- "metadata %d\n", inode->i_ino, fragment,
+ UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, required %u, "
+ "metadata %d\n", inode->i_ino, (unsigned long long)fragment,
(unsigned long long)new_fragment, required, !phys);
/* TODO : to be done for write support
@@ -193,17 +193,20 @@
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
- p = ufsi->i_u1.i_data + block;
+ p = ufs_get_direct_data_ptr(uspi, ufsi, block);
+
goal = 0;
repeat:
- tmp = fs32_to_cpu(sb, *p);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+
lastfrag = ufsi->i_lastfrag;
if (tmp && fragment < lastfrag) {
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == fs32_to_cpu(sb, *p)) {
- UFSD("EXIT, result %u\n", tmp + blockoff);
+ if (tmp == ufs_data_ptr_to_cpu(sb, p)) {
+ UFSD("EXIT, result %llu\n",
+ (unsigned long long)tmp + blockoff);
return result;
}
brelse (result);
@@ -224,10 +227,11 @@
* We must reallocate last allocated block
*/
if (lastblockoff) {
- p2 = ufsi->i_u1.i_data + lastblock;
- tmp = ufs_new_fragments (inode, p2, lastfrag,
- fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff,
- err, locked_page);
+ p2 = ufs_get_direct_data_ptr(uspi, ufsi, lastblock);
+ tmp = ufs_new_fragments(inode, p2, lastfrag,
+ ufs_data_ptr_to_cpu(sb, p2),
+ uspi->s_fpb - lastblockoff,
+ err, locked_page);
if (!tmp) {
if (lastfrag != ufsi->i_lastfrag)
goto repeat;
@@ -237,27 +241,31 @@
lastfrag = ufsi->i_lastfrag;
}
- tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]);
+ tmp = ufs_data_ptr_to_cpu(sb,
+ ufs_get_direct_data_ptr(uspi, ufsi,
+ lastblock));
if (tmp)
goal = tmp + uspi->s_fpb;
tmp = ufs_new_fragments (inode, p, fragment - blockoff,
goal, required + blockoff,
err,
phys != NULL ? locked_page : NULL);
- }
+ } else if (lastblock == block) {
/*
* We will extend last allocated block
*/
- else if (lastblock == block) {
- tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff),
- fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff),
+ tmp = ufs_new_fragments(inode, p, fragment -
+ (blockoff - lastblockoff),
+ ufs_data_ptr_to_cpu(sb, p),
+ required + (blockoff - lastblockoff),
err, phys != NULL ? locked_page : NULL);
} else /* (lastblock > block) */ {
/*
* We will allocate new block before last allocated block
*/
if (block) {
- tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]);
+ tmp = ufs_data_ptr_to_cpu(sb,
+ ufs_get_direct_data_ptr(uspi, ufsi, block - 1));
if (tmp)
goal = tmp + uspi->s_fpb;
}
@@ -266,7 +274,7 @@
phys != NULL ? locked_page : NULL);
}
if (!tmp) {
- if ((!blockoff && *p) ||
+ if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) ||
(blockoff && lastfrag != ufsi->i_lastfrag))
goto repeat;
*err = -ENOSPC;
@@ -286,7 +294,7 @@
if (IS_SYNC(inode))
ufs_sync_inode (inode);
mark_inode_dirty(inode);
- UFSD("EXIT, result %u\n", tmp + blockoff);
+ UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff);
return result;
/* This part : To be implemented ....
@@ -320,20 +328,22 @@
*/
static struct buffer_head *
ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
- unsigned int fragment, sector_t new_fragment, int *err,
+ u64 fragment, sector_t new_fragment, int *err,
long *phys, int *new, struct page *locked_page)
{
struct super_block *sb = inode->i_sb;
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
- unsigned tmp, goal, block, blockoff;
- __fs32 * p;
+ unsigned blockoff;
+ u64 tmp, goal, block;
+ void *p;
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
- UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n",
- inode->i_ino, fragment, (unsigned long long)new_fragment, !phys);
+ UFSD("ENTER, ino %lu, fragment %llu, new_fragment %llu, metadata %d\n",
+ inode->i_ino, (unsigned long long)fragment,
+ (unsigned long long)new_fragment, !phys);
result = NULL;
if (!bh)
@@ -344,14 +354,16 @@
if (!buffer_uptodate(bh))
goto out;
}
-
- p = (__fs32 *) bh->b_data + block;
+ if (uspi->fs_magic == UFS2_MAGIC)
+ p = (__fs64 *)bh->b_data + block;
+ else
+ p = (__fs32 *)bh->b_data + block;
repeat:
- tmp = fs32_to_cpu(sb, *p);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (tmp) {
if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == fs32_to_cpu(sb, *p))
+ if (tmp == ufs_data_ptr_to_cpu(sb, p))
goto out;
brelse (result);
goto repeat;
@@ -361,14 +373,16 @@
}
}
- if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1])))
+ if (block && (uspi->fs_magic == UFS2_MAGIC ?
+ (tmp = fs64_to_cpu(sb, ((__fs64 *)bh->b_data)[block-1])) :
+ (tmp = fs32_to_cpu(sb, ((__fs32 *)bh->b_data)[block-1]))))
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal,
uspi->s_fpb, err, locked_page);
if (!tmp) {
- if (fs32_to_cpu(sb, *p))
+ if (ufs_data_ptr_to_cpu(sb, p))
goto repeat;
goto out;
}
@@ -386,7 +400,7 @@
sync_dirty_buffer(bh);
inode->i_ctime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- UFSD("result %u\n", tmp + blockoff);
+ UFSD("result %llu\n", (unsigned long long)tmp + blockoff);
out:
brelse (bh);
UFSD("EXIT\n");