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UBIFS: fix bulk-read handling uptodate pages
Bulk-read skips uptodate pages but this was putting its array index out and causing it to treat subsequent pages as holes. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
This commit is contained in:
parent
46773be497
commit
5c0013c16b
1 changed files with 11 additions and 5 deletions
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@ -595,7 +595,7 @@ static int ubifs_write_end(struct file *file, struct address_space *mapping,
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static int populate_page(struct ubifs_info *c, struct page *page,
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static int populate_page(struct ubifs_info *c, struct page *page,
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struct bu_info *bu, int *n)
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struct bu_info *bu, int *n)
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{
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{
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int i = 0, nn = *n, offs = bu->zbranch[0].offs, hole = 1, read = 0;
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int i = 0, nn = *n, offs = bu->zbranch[0].offs, hole = 0, read = 0;
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struct inode *inode = page->mapping->host;
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struct inode *inode = page->mapping->host;
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loff_t i_size = i_size_read(inode);
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loff_t i_size = i_size_read(inode);
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unsigned int page_block;
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unsigned int page_block;
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@ -609,6 +609,7 @@ static int populate_page(struct ubifs_info *c, struct page *page,
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end_index = (i_size - 1) >> PAGE_CACHE_SHIFT;
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end_index = (i_size - 1) >> PAGE_CACHE_SHIFT;
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if (!i_size || page->index > end_index) {
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if (!i_size || page->index > end_index) {
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hole = 1;
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memset(addr, 0, PAGE_CACHE_SIZE);
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memset(addr, 0, PAGE_CACHE_SIZE);
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goto out_hole;
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goto out_hole;
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}
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}
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@ -617,10 +618,10 @@ static int populate_page(struct ubifs_info *c, struct page *page,
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while (1) {
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while (1) {
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int err, len, out_len, dlen;
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int err, len, out_len, dlen;
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if (nn >= bu->cnt ||
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if (nn >= bu->cnt) {
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key_block(c, &bu->zbranch[nn].key) != page_block)
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hole = 1;
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memset(addr, 0, UBIFS_BLOCK_SIZE);
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memset(addr, 0, UBIFS_BLOCK_SIZE);
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else {
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} else if (key_block(c, &bu->zbranch[nn].key) == page_block) {
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struct ubifs_data_node *dn;
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struct ubifs_data_node *dn;
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dn = bu->buf + (bu->zbranch[nn].offs - offs);
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dn = bu->buf + (bu->zbranch[nn].offs - offs);
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@ -643,8 +644,13 @@ static int populate_page(struct ubifs_info *c, struct page *page,
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memset(addr + len, 0, UBIFS_BLOCK_SIZE - len);
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memset(addr + len, 0, UBIFS_BLOCK_SIZE - len);
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nn += 1;
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nn += 1;
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hole = 0;
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read = (i << UBIFS_BLOCK_SHIFT) + len;
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read = (i << UBIFS_BLOCK_SHIFT) + len;
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} else if (key_block(c, &bu->zbranch[nn].key) < page_block) {
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nn += 1;
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continue;
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} else {
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hole = 1;
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memset(addr, 0, UBIFS_BLOCK_SIZE);
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}
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}
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if (++i >= UBIFS_BLOCKS_PER_PAGE)
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if (++i >= UBIFS_BLOCKS_PER_PAGE)
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break;
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break;
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