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-rw-r--r--fs/qnx4/inode.c88
-rw-r--r--fs/qnx4/namei.c9
-rw-r--r--fs/qnx4/qnx4.h2
3 files changed, 20 insertions, 79 deletions
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 6b009548d2e..552e994e3aa 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -52,38 +52,6 @@ static int qnx4_remount(struct super_block *sb, int *flags, char *data)
return 0;
}
-static struct buffer_head *qnx4_getblk(struct inode *inode, int nr,
- int create)
-{
- struct buffer_head *result = NULL;
-
- if ( nr >= 0 )
- nr = qnx4_block_map( inode, nr );
- if (nr) {
- result = sb_getblk(inode->i_sb, nr);
- return result;
- }
- return NULL;
-}
-
-struct buffer_head *qnx4_bread(struct inode *inode, int block, int create)
-{
- struct buffer_head *bh;
-
- bh = qnx4_getblk(inode, block, create);
- if (!bh || buffer_uptodate(bh)) {
- return bh;
- }
- ll_rw_block(READ, 1, &bh);
- wait_on_buffer(bh);
- if (buffer_uptodate(bh)) {
- return bh;
- }
- brelse(bh);
-
- return NULL;
-}
-
static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_head *bh, int create )
{
unsigned long phys;
@@ -98,23 +66,31 @@ static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_h
return 0;
}
+static inline u32 try_extent(qnx4_xtnt_t *extent, u32 *offset)
+{
+ u32 size = le32_to_cpu(extent->xtnt_size);
+ if (*offset < size)
+ return le32_to_cpu(extent->xtnt_blk) + *offset - 1;
+ *offset -= size;
+ return 0;
+}
+
unsigned long qnx4_block_map( struct inode *inode, long iblock )
{
int ix;
- long offset, i_xblk;
- unsigned long block = 0;
+ long i_xblk;
struct buffer_head *bh = NULL;
struct qnx4_xblk *xblk = NULL;
struct qnx4_inode_entry *qnx4_inode = qnx4_raw_inode(inode);
u16 nxtnt = le16_to_cpu(qnx4_inode->di_num_xtnts);
+ u32 offset = iblock;
+ u32 block = try_extent(&qnx4_inode->di_first_xtnt, &offset);
- if ( iblock < le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_size) ) {
+ if (block) {
// iblock is in the first extent. This is easy.
- block = le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_blk) + iblock - 1;
} else {
// iblock is beyond first extent. We have to follow the extent chain.
i_xblk = le32_to_cpu(qnx4_inode->di_xblk);
- offset = iblock - le32_to_cpu(qnx4_inode->di_first_xtnt.xtnt_size);
ix = 0;
while ( --nxtnt > 0 ) {
if ( ix == 0 ) {
@@ -130,12 +106,11 @@ unsigned long qnx4_block_map( struct inode *inode, long iblock )
return -EIO;
}
}
- if ( offset < le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_size) ) {
+ block = try_extent(&xblk->xblk_xtnts[ix], &offset);
+ if (block) {
// got it!
- block = le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_blk) + offset - 1;
break;
}
- offset -= le32_to_cpu(xblk->xblk_xtnts[ix].xtnt_size);
if ( ++ix >= xblk->xblk_num_xtnts ) {
i_xblk = le32_to_cpu(xblk->xblk_next_xblk);
ix = 0;
@@ -260,15 +235,13 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
}
ret = -ENOMEM;
- s->s_root = d_alloc_root(root);
+ s->s_root = d_make_root(root);
if (s->s_root == NULL)
- goto outi;
+ goto outb;
brelse(bh);
return 0;
- outi:
- iput(root);
outb:
kfree(qs->BitMap);
out:
@@ -288,44 +261,17 @@ static void qnx4_put_super(struct super_block *sb)
return;
}
-static int qnx4_writepage(struct page *page, struct writeback_control *wbc)
-{
- return block_write_full_page(page,qnx4_get_block, wbc);
-}
-
static int qnx4_readpage(struct file *file, struct page *page)
{
return block_read_full_page(page,qnx4_get_block);
}
-static int qnx4_write_begin(struct file *file, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata)
-{
- struct qnx4_inode_info *qnx4_inode = qnx4_i(mapping->host);
- int ret;
-
- *pagep = NULL;
- ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- qnx4_get_block,
- &qnx4_inode->mmu_private);
- if (unlikely(ret)) {
- loff_t isize = mapping->host->i_size;
- if (pos + len > isize)
- vmtruncate(mapping->host, isize);
- }
-
- return ret;
-}
static sector_t qnx4_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping,block,qnx4_get_block);
}
static const struct address_space_operations qnx4_aops = {
.readpage = qnx4_readpage,
- .writepage = qnx4_writepage,
- .write_begin = qnx4_write_begin,
- .write_end = generic_write_end,
.bmap = qnx4_bmap
};
diff --git a/fs/qnx4/namei.c b/fs/qnx4/namei.c
index 275327b5615..a512c0b30e8 100644
--- a/fs/qnx4/namei.c
+++ b/fs/qnx4/namei.c
@@ -39,10 +39,6 @@ static int qnx4_match(int len, const char *name,
} else {
namelen = QNX4_SHORT_NAME_MAX;
}
- /* "" means "." ---> so paths like "/usr/lib//libc.a" work */
- if (!len && (de->di_fname[0] == '.') && (de->di_fname[1] == '\0')) {
- return 1;
- }
thislen = strlen( de->di_fname );
if ( thislen > namelen )
thislen = namelen;
@@ -72,7 +68,9 @@ static struct buffer_head *qnx4_find_entry(int len, struct inode *dir,
block = offset = blkofs = 0;
while (blkofs * QNX4_BLOCK_SIZE + offset < dir->i_size) {
if (!bh) {
- bh = qnx4_bread(dir, blkofs, 0);
+ block = qnx4_block_map(dir, blkofs);
+ if (block)
+ bh = sb_bread(dir->i_sb, block);
if (!bh) {
blkofs++;
continue;
@@ -80,7 +78,6 @@ static struct buffer_head *qnx4_find_entry(int len, struct inode *dir,
}
*res_dir = (struct qnx4_inode_entry *) (bh->b_data + offset);
if (qnx4_match(len, name, bh, &offset)) {
- block = qnx4_block_map( dir, blkofs );
*ino = block * QNX4_INODES_PER_BLOCK +
(offset / QNX4_DIR_ENTRY_SIZE) - 1;
return bh;
diff --git a/fs/qnx4/qnx4.h b/fs/qnx4/qnx4.h
index 33a60858203..244d4620189 100644
--- a/fs/qnx4/qnx4.h
+++ b/fs/qnx4/qnx4.h
@@ -27,8 +27,6 @@ extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, stru
extern unsigned long qnx4_count_free_blocks(struct super_block *sb);
extern unsigned long qnx4_block_map(struct inode *inode, long iblock);
-extern struct buffer_head *qnx4_bread(struct inode *, int, int);
-
extern const struct inode_operations qnx4_dir_inode_operations;
extern const struct file_operations qnx4_dir_operations;
extern int qnx4_is_free(struct super_block *sb, long block);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-22 21:15:28 +0000