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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAmVCKSwACgkQnJ2qBz9k QNn6jwgAjQOrUJkJvnqindNNAGvkwE5zph+MWJolbQ7gu3Im5jYLECD4huER3m6q j+tj9ya49iHuIJLEBSctb3NvnhwGgNkupeM9klHGWDtyJwiV5FiV1OYEusxjiq5G tuWCImEn/OoLckfdP4umKqNDMftDVoTUYMViUoS9KBNXVVz0Y4Ex0KwSZFSM47j8 yRlSCRe6CK4lNyiAxLsm8kSzPge/s+mwz7P7z3i/4IgCkvw3fnMBEulCSbMZjhHD WrdCmYsgOJtqj+/hSSKPIJ5W92fFjLY1yaxocsVIzRGHQXriBznix7OS4iRLXtzk 9eBAzvVlu/HXBZCF+ZRIUMG+2P17Dg== =0k3R -----END PGP SIGNATURE----- Merge tag 'fs_for_v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2, udf, and quota updates from Jan Kara: - conversion of ext2 directory code to use folios - cleanups in UDF declarations - bugfix for quota interaction with file encryption * tag 'fs_for_v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: ext2: Convert ext2_prepare_chunk and ext2_commit_chunk to folios ext2: Convert ext2_make_empty() to use a folio ext2: Convert ext2_unlink() and ext2_rename() to use folios ext2: Convert ext2_delete_entry() to use folios ext2: Convert ext2_empty_dir() to use a folio ext2: Convert ext2_add_link() to use a folio ext2: Convert ext2_readdir to use a folio ext2: Add ext2_get_folio() ext2: Convert ext2_check_page to ext2_check_folio highmem: Add folio_release_kmap() udf: Avoid unneeded variable length array in struct fileIdentDesc udf: Annotate struct udf_bitmap with __counted_by quota: explicitly forbid quota files from being encrypted
This commit is contained in:
Linus Torvalds
commit
5efad0a765
7 changed files with 164 additions and 141 deletions
212
fs/ext2/dir.c
212
fs/ext2/dir.c
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@ -81,34 +81,34 @@ ext2_last_byte(struct inode *inode, unsigned long page_nr)
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return last_byte;
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}
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static void ext2_commit_chunk(struct page *page, loff_t pos, unsigned len)
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static void ext2_commit_chunk(struct folio *folio, loff_t pos, unsigned len)
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{
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struct address_space *mapping = page->mapping;
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struct address_space *mapping = folio->mapping;
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struct inode *dir = mapping->host;
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inode_inc_iversion(dir);
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block_write_end(NULL, mapping, pos, len, len, page, NULL);
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block_write_end(NULL, mapping, pos, len, len, &folio->page, NULL);
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if (pos+len > dir->i_size) {
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i_size_write(dir, pos+len);
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mark_inode_dirty(dir);
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}
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unlock_page(page);
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folio_unlock(folio);
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}
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static bool ext2_check_page(struct page *page, int quiet, char *kaddr)
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static bool ext2_check_folio(struct folio *folio, int quiet, char *kaddr)
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{
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struct inode *dir = page->mapping->host;
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struct inode *dir = folio->mapping->host;
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struct super_block *sb = dir->i_sb;
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unsigned chunk_size = ext2_chunk_size(dir);
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u32 max_inumber = le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count);
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unsigned offs, rec_len;
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unsigned limit = PAGE_SIZE;
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unsigned limit = folio_size(folio);
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ext2_dirent *p;
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char *error;
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if ((dir->i_size >> PAGE_SHIFT) == page->index) {
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limit = dir->i_size & ~PAGE_MASK;
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if (dir->i_size < folio_pos(folio) + limit) {
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limit = offset_in_folio(folio, dir->i_size);
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if (limit & (chunk_size - 1))
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goto Ebadsize;
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if (!limit)
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@ -132,7 +132,7 @@ static bool ext2_check_page(struct page *page, int quiet, char *kaddr)
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if (offs != limit)
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goto Eend;
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out:
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SetPageChecked(page);
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folio_set_checked(folio);
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return true;
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/* Too bad, we had an error */
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@ -160,51 +160,52 @@ static bool ext2_check_page(struct page *page, int quiet, char *kaddr)
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bad_entry:
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if (!quiet)
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ext2_error(sb, __func__, "bad entry in directory #%lu: : %s - "
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"offset=%lu, inode=%lu, rec_len=%d, name_len=%d",
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dir->i_ino, error, (page->index<<PAGE_SHIFT)+offs,
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"offset=%llu, inode=%lu, rec_len=%d, name_len=%d",
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dir->i_ino, error, folio_pos(folio) + offs,
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(unsigned long) le32_to_cpu(p->inode),
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rec_len, p->name_len);
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goto fail;
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Eend:
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if (!quiet) {
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p = (ext2_dirent *)(kaddr + offs);
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ext2_error(sb, "ext2_check_page",
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ext2_error(sb, "ext2_check_folio",
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"entry in directory #%lu spans the page boundary"
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"offset=%lu, inode=%lu",
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dir->i_ino, (page->index<<PAGE_SHIFT)+offs,
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"offset=%llu, inode=%lu",
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dir->i_ino, folio_pos(folio) + offs,
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(unsigned long) le32_to_cpu(p->inode));
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}
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fail:
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SetPageError(page);
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folio_set_error(folio);
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return false;
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}
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/*
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* Calls to ext2_get_page()/ext2_put_page() must be nested according to the
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* rules documented in kmap_local_page()/kunmap_local().
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* Calls to ext2_get_folio()/folio_release_kmap() must be nested according
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* to the rules documented in kmap_local_folio()/kunmap_local().
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*
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* NOTE: ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_page()
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* and should be treated as a call to ext2_get_page() for nesting purposes.
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* NOTE: ext2_find_entry() and ext2_dotdot() act as a call
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* to folio_release_kmap() and should be treated as a call to
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* folio_release_kmap() for nesting purposes.
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*/
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static void *ext2_get_page(struct inode *dir, unsigned long n,
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int quiet, struct page **page)
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static void *ext2_get_folio(struct inode *dir, unsigned long n,
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int quiet, struct folio **foliop)
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{
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struct address_space *mapping = dir->i_mapping;
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struct folio *folio = read_mapping_folio(mapping, n, NULL);
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void *page_addr;
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void *kaddr;
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if (IS_ERR(folio))
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return ERR_CAST(folio);
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page_addr = kmap_local_folio(folio, n & (folio_nr_pages(folio) - 1));
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kaddr = kmap_local_folio(folio, 0);
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if (unlikely(!folio_test_checked(folio))) {
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if (!ext2_check_page(&folio->page, quiet, page_addr))
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if (!ext2_check_folio(folio, quiet, kaddr))
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goto fail;
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}
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*page = &folio->page;
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return page_addr;
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*foliop = folio;
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return kaddr;
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fail:
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ext2_put_page(&folio->page, page_addr);
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folio_release_kmap(folio, kaddr);
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return ERR_PTR(-EIO);
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}
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@ -274,8 +275,8 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
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for ( ; n < npages; n++, offset = 0) {
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ext2_dirent *de;
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struct page *page;
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char *kaddr = ext2_get_page(inode, n, 0, &page);
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struct folio *folio;
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char *kaddr = ext2_get_folio(inode, n, 0, &folio);
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char *limit;
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if (IS_ERR(kaddr)) {
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@ -299,7 +300,7 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
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if (de->rec_len == 0) {
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ext2_error(sb, __func__,
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"zero-length directory entry");
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ext2_put_page(page, de);
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folio_release_kmap(folio, de);
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return -EIO;
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}
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if (de->inode) {
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@ -311,13 +312,13 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
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if (!dir_emit(ctx, de->name, de->name_len,
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le32_to_cpu(de->inode),
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d_type)) {
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ext2_put_page(page, de);
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folio_release_kmap(folio, de);
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return 0;
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}
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}
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ctx->pos += ext2_rec_len_from_disk(de->rec_len);
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}
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ext2_put_page(page, kaddr);
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folio_release_kmap(folio, kaddr);
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}
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return 0;
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}
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@ -330,38 +331,35 @@ ext2_readdir(struct file *file, struct dir_context *ctx)
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* and the entry itself. Page is returned mapped and unlocked.
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* Entry is guaranteed to be valid.
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*
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* On Success ext2_put_page() should be called on *res_page.
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* On Success folio_release_kmap() should be called on *foliop.
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*
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* NOTE: Calls to ext2_get_page()/ext2_put_page() must be nested according to
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* the rules documented in kmap_local_page()/kunmap_local().
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* NOTE: Calls to ext2_get_folio()/folio_release_kmap() must be nested
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* according to the rules documented in kmap_local_folio()/kunmap_local().
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*
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* ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_page() and
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* should be treated as a call to ext2_get_page() for nesting purposes.
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* ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_folio()
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* and should be treated as a call to ext2_get_folio() for nesting
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* purposes.
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*/
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struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
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const struct qstr *child, struct page **res_page)
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const struct qstr *child, struct folio **foliop)
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{
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const char *name = child->name;
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int namelen = child->len;
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unsigned reclen = EXT2_DIR_REC_LEN(namelen);
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unsigned long start, n;
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unsigned long npages = dir_pages(dir);
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struct page *page = NULL;
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struct ext2_inode_info *ei = EXT2_I(dir);
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ext2_dirent * de;
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if (npages == 0)
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goto out;
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/* OFFSET_CACHE */
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*res_page = NULL;
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start = ei->i_dir_start_lookup;
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if (start >= npages)
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start = 0;
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n = start;
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do {
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char *kaddr = ext2_get_page(dir, n, 0, &page);
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char *kaddr = ext2_get_folio(dir, n, 0, foliop);
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if (IS_ERR(kaddr))
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return ERR_CAST(kaddr);
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@ -371,18 +369,18 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
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if (de->rec_len == 0) {
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ext2_error(dir->i_sb, __func__,
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"zero-length directory entry");
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ext2_put_page(page, de);
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folio_release_kmap(*foliop, de);
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goto out;
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}
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if (ext2_match(namelen, name, de))
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goto found;
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de = ext2_next_entry(de);
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}
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ext2_put_page(page, kaddr);
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folio_release_kmap(*foliop, kaddr);
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if (++n >= npages)
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n = 0;
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/* next page is past the blocks we've got */
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/* next folio is past the blocks we've got */
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if (unlikely(n > (dir->i_blocks >> (PAGE_SHIFT - 9)))) {
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ext2_error(dir->i_sb, __func__,
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"dir %lu size %lld exceeds block count %llu",
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@ -395,7 +393,6 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
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return ERR_PTR(-ENOENT);
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found:
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*res_page = page;
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ei->i_dir_start_lookup = n;
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return de;
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}
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@ -404,17 +401,18 @@ struct ext2_dir_entry_2 *ext2_find_entry (struct inode *dir,
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* Return the '..' directory entry and the page in which the entry was found
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* (as a parameter - p).
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*
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* On Success ext2_put_page() should be called on *p.
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* On Success folio_release_kmap() should be called on *foliop.
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*
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* NOTE: Calls to ext2_get_page()/ext2_put_page() must be nested according to
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* the rules documented in kmap_local_page()/kunmap_local().
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* NOTE: Calls to ext2_get_folio()/folio_release_kmap() must be nested
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* according to the rules documented in kmap_local_folio()/kunmap_local().
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*
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* ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_page() and
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* should be treated as a call to ext2_get_page() for nesting purposes.
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* ext2_find_entry() and ext2_dotdot() act as a call to ext2_get_folio()
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* and should be treated as a call to ext2_get_folio() for nesting
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* purposes.
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*/
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struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p)
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struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct folio **foliop)
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{
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ext2_dirent *de = ext2_get_page(dir, 0, 0, p);
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ext2_dirent *de = ext2_get_folio(dir, 0, 0, foliop);
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if (!IS_ERR(de))
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return ext2_next_entry(de);
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@ -424,23 +422,22 @@ struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p)
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int ext2_inode_by_name(struct inode *dir, const struct qstr *child, ino_t *ino)
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{
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struct ext2_dir_entry_2 *de;
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struct page *page;
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struct folio *folio;
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de = ext2_find_entry(dir, child, &page);
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de = ext2_find_entry(dir, child, &folio);
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if (IS_ERR(de))
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return PTR_ERR(de);
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*ino = le32_to_cpu(de->inode);
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ext2_put_page(page, de);
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folio_release_kmap(folio, de);
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return 0;
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||||
}
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|
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static int ext2_prepare_chunk(struct page *page, loff_t pos, unsigned len)
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static int ext2_prepare_chunk(struct folio *folio, loff_t pos, unsigned len)
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||||
{
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||||
return __block_write_begin(page, pos, len, ext2_get_block);
|
||||
return __block_write_begin(&folio->page, pos, len, ext2_get_block);
|
||||
}
|
||||
|
||||
|
||||
static int ext2_handle_dirsync(struct inode *dir)
|
||||
{
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||||
int err;
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||||
|
|
@ -452,21 +449,21 @@ static int ext2_handle_dirsync(struct inode *dir)
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|||
}
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||||
|
||||
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
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struct page *page, struct inode *inode, bool update_times)
|
||||
struct folio *folio, struct inode *inode, bool update_times)
|
||||
{
|
||||
loff_t pos = page_offset(page) + offset_in_page(de);
|
||||
loff_t pos = folio_pos(folio) + offset_in_folio(folio, de);
|
||||
unsigned len = ext2_rec_len_from_disk(de->rec_len);
|
||||
int err;
|
||||
|
||||
lock_page(page);
|
||||
err = ext2_prepare_chunk(page, pos, len);
|
||||
folio_lock(folio);
|
||||
err = ext2_prepare_chunk(folio, pos, len);
|
||||
if (err) {
|
||||
unlock_page(page);
|
||||
folio_unlock(folio);
|
||||
return err;
|
||||
}
|
||||
de->inode = cpu_to_le32(inode->i_ino);
|
||||
ext2_set_de_type(de, inode);
|
||||
ext2_commit_chunk(page, pos, len);
|
||||
ext2_commit_chunk(folio, pos, len);
|
||||
if (update_times)
|
||||
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
|
||||
EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL;
|
||||
|
|
@ -485,7 +482,7 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
|
|||
unsigned chunk_size = ext2_chunk_size(dir);
|
||||
unsigned reclen = EXT2_DIR_REC_LEN(namelen);
|
||||
unsigned short rec_len, name_len;
|
||||
struct page *page = NULL;
|
||||
struct folio *folio = NULL;
|
||||
ext2_dirent * de;
|
||||
unsigned long npages = dir_pages(dir);
|
||||
unsigned long n;
|
||||
|
|
@ -494,19 +491,19 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
|
|||
|
||||
/*
|
||||
* We take care of directory expansion in the same loop.
|
||||
* This code plays outside i_size, so it locks the page
|
||||
* This code plays outside i_size, so it locks the folio
|
||||
* to protect that region.
|
||||
*/
|
||||
for (n = 0; n <= npages; n++) {
|
||||
char *kaddr = ext2_get_page(dir, n, 0, &page);
|
||||
char *kaddr = ext2_get_folio(dir, n, 0, &folio);
|
||||
char *dir_end;
|
||||
|
||||
if (IS_ERR(kaddr))
|
||||
return PTR_ERR(kaddr);
|
||||
lock_page(page);
|
||||
folio_lock(folio);
|
||||
dir_end = kaddr + ext2_last_byte(dir, n);
|
||||
de = (ext2_dirent *)kaddr;
|
||||
kaddr += PAGE_SIZE - reclen;
|
||||
kaddr += folio_size(folio) - reclen;
|
||||
while ((char *)de <= kaddr) {
|
||||
if ((char *)de == dir_end) {
|
||||
/* We hit i_size */
|
||||
|
|
@ -533,15 +530,15 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
|
|||
goto got_it;
|
||||
de = (ext2_dirent *) ((char *) de + rec_len);
|
||||
}
|
||||
unlock_page(page);
|
||||
ext2_put_page(page, kaddr);
|
||||
folio_unlock(folio);
|
||||
folio_release_kmap(folio, kaddr);
|
||||
}
|
||||
BUG();
|
||||
return -EINVAL;
|
||||
|
||||
got_it:
|
||||
pos = page_offset(page) + offset_in_page(de);
|
||||
err = ext2_prepare_chunk(page, pos, rec_len);
|
||||
pos = folio_pos(folio) + offset_in_folio(folio, de);
|
||||
err = ext2_prepare_chunk(folio, pos, rec_len);
|
||||
if (err)
|
||||
goto out_unlock;
|
||||
if (de->inode) {
|
||||
|
|
@ -554,17 +551,17 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
|
|||
memcpy(de->name, name, namelen);
|
||||
de->inode = cpu_to_le32(inode->i_ino);
|
||||
ext2_set_de_type (de, inode);
|
||||
ext2_commit_chunk(page, pos, rec_len);
|
||||
ext2_commit_chunk(folio, pos, rec_len);
|
||||
inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
|
||||
EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL;
|
||||
mark_inode_dirty(dir);
|
||||
err = ext2_handle_dirsync(dir);
|
||||
/* OFFSET_CACHE */
|
||||
out_put:
|
||||
ext2_put_page(page, de);
|
||||
folio_release_kmap(folio, de);
|
||||
return err;
|
||||
out_unlock:
|
||||
unlock_page(page);
|
||||
folio_unlock(folio);
|
||||
goto out_put;
|
||||
}
|
||||
|
||||
|
|
@ -572,18 +569,21 @@ int ext2_add_link (struct dentry *dentry, struct inode *inode)
|
|||
* ext2_delete_entry deletes a directory entry by merging it with the
|
||||
* previous entry. Page is up-to-date.
|
||||
*/
|
||||
int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page)
|
||||
int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct folio *folio)
|
||||
{
|
||||
struct inode *inode = page->mapping->host;
|
||||
char *kaddr = (char *)((unsigned long)dir & PAGE_MASK);
|
||||
unsigned from = offset_in_page(dir) & ~(ext2_chunk_size(inode)-1);
|
||||
unsigned to = offset_in_page(dir) +
|
||||
ext2_rec_len_from_disk(dir->rec_len);
|
||||
struct inode *inode = folio->mapping->host;
|
||||
size_t from, to;
|
||||
char *kaddr;
|
||||
loff_t pos;
|
||||
ext2_dirent *pde = NULL;
|
||||
ext2_dirent *de = (ext2_dirent *)(kaddr + from);
|
||||
ext2_dirent *de, *pde = NULL;
|
||||
int err;
|
||||
|
||||
from = offset_in_folio(folio, dir);
|
||||
to = from + ext2_rec_len_from_disk(dir->rec_len);
|
||||
kaddr = (char *)dir - from;
|
||||
from &= ~(ext2_chunk_size(inode)-1);
|
||||
de = (ext2_dirent *)(kaddr + from);
|
||||
|
||||
while ((char*)de < (char*)dir) {
|
||||
if (de->rec_len == 0) {
|
||||
ext2_error(inode->i_sb, __func__,
|
||||
|
|
@ -594,18 +594,18 @@ int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page)
|
|||
de = ext2_next_entry(de);
|
||||
}
|
||||
if (pde)
|
||||
from = offset_in_page(pde);
|
||||
pos = page_offset(page) + from;
|
||||
lock_page(page);
|
||||
err = ext2_prepare_chunk(page, pos, to - from);
|
||||
from = offset_in_folio(folio, pde);
|
||||
pos = folio_pos(folio) + from;
|
||||
folio_lock(folio);
|
||||
err = ext2_prepare_chunk(folio, pos, to - from);
|
||||
if (err) {
|
||||
unlock_page(page);
|
||||
folio_unlock(folio);
|
||||
return err;
|
||||
}
|
||||
if (pde)
|
||||
pde->rec_len = ext2_rec_len_to_disk(to - from);
|
||||
dir->inode = 0;
|
||||
ext2_commit_chunk(page, pos, to - from);
|
||||
ext2_commit_chunk(folio, pos, to - from);
|
||||
inode_set_mtime_to_ts(inode, inode_set_ctime_current(inode));
|
||||
EXT2_I(inode)->i_flags &= ~EXT2_BTREE_FL;
|
||||
mark_inode_dirty(inode);
|
||||
|
|
@ -617,21 +617,21 @@ int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page)
|
|||
*/
|
||||
int ext2_make_empty(struct inode *inode, struct inode *parent)
|
||||
{
|
||||
struct page *page = grab_cache_page(inode->i_mapping, 0);
|
||||
struct folio *folio = filemap_grab_folio(inode->i_mapping, 0);
|
||||
unsigned chunk_size = ext2_chunk_size(inode);
|
||||
struct ext2_dir_entry_2 * de;
|
||||
int err;
|
||||
void *kaddr;
|
||||
|
||||
if (!page)
|
||||
return -ENOMEM;
|
||||
if (IS_ERR(folio))
|
||||
return PTR_ERR(folio);
|
||||
|
||||
err = ext2_prepare_chunk(page, 0, chunk_size);
|
||||
err = ext2_prepare_chunk(folio, 0, chunk_size);
|
||||
if (err) {
|
||||
unlock_page(page);
|
||||
folio_unlock(folio);
|
||||
goto fail;
|
||||
}
|
||||
kaddr = kmap_local_page(page);
|
||||
kaddr = kmap_local_folio(folio, 0);
|
||||
memset(kaddr, 0, chunk_size);
|
||||
de = (struct ext2_dir_entry_2 *)kaddr;
|
||||
de->name_len = 1;
|
||||
|
|
@ -647,26 +647,26 @@ int ext2_make_empty(struct inode *inode, struct inode *parent)
|
|||
memcpy (de->name, "..\0", 4);
|
||||
ext2_set_de_type (de, inode);
|
||||
kunmap_local(kaddr);
|
||||
ext2_commit_chunk(page, 0, chunk_size);
|
||||
ext2_commit_chunk(folio, 0, chunk_size);
|
||||
err = ext2_handle_dirsync(inode);
|
||||
fail:
|
||||
put_page(page);
|
||||
folio_put(folio);
|
||||
return err;
|
||||
}
|
||||
|
||||
/*
|
||||
* routine to check that the specified directory is empty (for rmdir)
|
||||
*/
|
||||
int ext2_empty_dir (struct inode * inode)
|
||||
int ext2_empty_dir(struct inode *inode)
|
||||
{
|
||||
struct page *page;
|
||||
struct folio *folio;
|
||||
char *kaddr;
|
||||
unsigned long i, npages = dir_pages(inode);
|
||||
|
||||
for (i = 0; i < npages; i++) {
|
||||
ext2_dirent *de;
|
||||
|
||||
kaddr = ext2_get_page(inode, i, 0, &page);
|
||||
kaddr = ext2_get_folio(inode, i, 0, &folio);
|
||||
if (IS_ERR(kaddr))
|
||||
return 0;
|
||||
|
||||
|
|
@ -695,12 +695,12 @@ int ext2_empty_dir (struct inode * inode)
|
|||
}
|
||||
de = ext2_next_entry(de);
|
||||
}
|
||||
ext2_put_page(page, kaddr);
|
||||
folio_release_kmap(folio, kaddr);
|
||||
}
|
||||
return 1;
|
||||
|
||||
not_empty:
|
||||
ext2_put_page(page, kaddr);
|
||||
folio_release_kmap(folio, kaddr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -717,22 +717,17 @@ extern void ext2_init_block_alloc_info(struct inode *);
|
|||
extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_window_node *rsv);
|
||||
|
||||
/* dir.c */
|
||||
extern int ext2_add_link (struct dentry *, struct inode *);
|
||||
extern int ext2_inode_by_name(struct inode *dir,
|
||||
int ext2_add_link(struct dentry *, struct inode *);
|
||||
int ext2_inode_by_name(struct inode *dir,
|
||||
const struct qstr *child, ino_t *ino);
|
||||
extern int ext2_make_empty(struct inode *, struct inode *);
|
||||
extern struct ext2_dir_entry_2 *ext2_find_entry(struct inode *, const struct qstr *,
|
||||
struct page **);
|
||||
extern int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page);
|
||||
extern int ext2_empty_dir (struct inode *);
|
||||
extern struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p);
|
||||
int ext2_make_empty(struct inode *, struct inode *);
|
||||
struct ext2_dir_entry_2 *ext2_find_entry(struct inode *, const struct qstr *,
|
||||
struct folio **foliop);
|
||||
int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct folio *folio);
|
||||
int ext2_empty_dir(struct inode *);
|
||||
struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct folio **foliop);
|
||||
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
|
||||
struct page *page, struct inode *inode, bool update_times);
|
||||
static inline void ext2_put_page(struct page *page, void *page_addr)
|
||||
{
|
||||
kunmap_local(page_addr);
|
||||
put_page(page);
|
||||
}
|
||||
struct folio *folio, struct inode *inode, bool update_times);
|
||||
|
||||
/* ialloc.c */
|
||||
extern struct inode * ext2_new_inode (struct inode *, umode_t, const struct qstr *);
|
||||
|
|
|
|||
|
|
@ -273,21 +273,21 @@ static int ext2_unlink(struct inode *dir, struct dentry *dentry)
|
|||
{
|
||||
struct inode *inode = d_inode(dentry);
|
||||
struct ext2_dir_entry_2 *de;
|
||||
struct page *page;
|
||||
struct folio *folio;
|
||||
int err;
|
||||
|
||||
err = dquot_initialize(dir);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
de = ext2_find_entry(dir, &dentry->d_name, &page);
|
||||
de = ext2_find_entry(dir, &dentry->d_name, &folio);
|
||||
if (IS_ERR(de)) {
|
||||
err = PTR_ERR(de);
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = ext2_delete_entry(de, page);
|
||||
ext2_put_page(page, de);
|
||||
err = ext2_delete_entry(de, folio);
|
||||
folio_release_kmap(folio, de);
|
||||
if (err)
|
||||
goto out;
|
||||
|
||||
|
|
@ -321,9 +321,9 @@ static int ext2_rename (struct mnt_idmap * idmap,
|
|||
{
|
||||
struct inode * old_inode = d_inode(old_dentry);
|
||||
struct inode * new_inode = d_inode(new_dentry);
|
||||
struct page * dir_page = NULL;
|
||||
struct folio *dir_folio = NULL;
|
||||
struct ext2_dir_entry_2 * dir_de = NULL;
|
||||
struct page * old_page;
|
||||
struct folio * old_folio;
|
||||
struct ext2_dir_entry_2 * old_de;
|
||||
int err;
|
||||
|
||||
|
|
@ -338,19 +338,19 @@ static int ext2_rename (struct mnt_idmap * idmap,
|
|||
if (err)
|
||||
return err;
|
||||
|
||||
old_de = ext2_find_entry(old_dir, &old_dentry->d_name, &old_page);
|
||||
old_de = ext2_find_entry(old_dir, &old_dentry->d_name, &old_folio);
|
||||
if (IS_ERR(old_de))
|
||||
return PTR_ERR(old_de);
|
||||
|
||||
if (S_ISDIR(old_inode->i_mode)) {
|
||||
err = -EIO;
|
||||
dir_de = ext2_dotdot(old_inode, &dir_page);
|
||||
dir_de = ext2_dotdot(old_inode, &dir_folio);
|
||||
if (!dir_de)
|
||||
goto out_old;
|
||||
}
|
||||
|
||||
if (new_inode) {
|
||||
struct page *new_page;
|
||||
struct folio *new_folio;
|
||||
struct ext2_dir_entry_2 *new_de;
|
||||
|
||||
err = -ENOTEMPTY;
|
||||
|
|
@ -358,13 +358,13 @@ static int ext2_rename (struct mnt_idmap * idmap,
|
|||
goto out_dir;
|
||||
|
||||
new_de = ext2_find_entry(new_dir, &new_dentry->d_name,
|
||||
&new_page);
|
||||
&new_folio);
|
||||
if (IS_ERR(new_de)) {
|
||||
err = PTR_ERR(new_de);
|
||||
goto out_dir;
|
||||
}
|
||||
err = ext2_set_link(new_dir, new_de, new_page, old_inode, true);
|
||||
ext2_put_page(new_page, new_de);
|
||||
err = ext2_set_link(new_dir, new_de, new_folio, old_inode, true);
|
||||
folio_release_kmap(new_folio, new_de);
|
||||
if (err)
|
||||
goto out_dir;
|
||||
inode_set_ctime_current(new_inode);
|
||||
|
|
@ -386,19 +386,19 @@ static int ext2_rename (struct mnt_idmap * idmap,
|
|||
inode_set_ctime_current(old_inode);
|
||||
mark_inode_dirty(old_inode);
|
||||
|
||||
err = ext2_delete_entry(old_de, old_page);
|
||||
err = ext2_delete_entry(old_de, old_folio);
|
||||
if (!err && dir_de) {
|
||||
if (old_dir != new_dir)
|
||||
err = ext2_set_link(old_inode, dir_de, dir_page,
|
||||
err = ext2_set_link(old_inode, dir_de, dir_folio,
|
||||
new_dir, false);
|
||||
|
||||
inode_dec_link_count(old_dir);
|
||||
}
|
||||
out_dir:
|
||||
if (dir_de)
|
||||
ext2_put_page(dir_page, dir_de);
|
||||
folio_release_kmap(dir_folio, dir_de);
|
||||
out_old:
|
||||
ext2_put_page(old_page, old_de);
|
||||
folio_release_kmap(old_folio, old_de);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -2351,6 +2351,20 @@ static int vfs_setup_quota_inode(struct inode *inode, int type)
|
|||
if (sb_has_quota_loaded(sb, type))
|
||||
return -EBUSY;
|
||||
|
||||
/*
|
||||
* Quota files should never be encrypted. They should be thought of as
|
||||
* filesystem metadata, not user data. New-style internal quota files
|
||||
* cannot be encrypted by users anyway, but old-style external quota
|
||||
* files could potentially be incorrectly created in an encrypted
|
||||
* directory, hence this explicit check. Some reasons why encrypted
|
||||
* quota files don't work include: (1) some filesystems that support
|
||||
* encryption don't handle it in their quota_read and quota_write, and
|
||||
* (2) cleaning up encrypted quota files at unmount would need special
|
||||
* consideration, as quota files are cleaned up later than user files.
|
||||
*/
|
||||
if (IS_ENCRYPTED(inode))
|
||||
return -EINVAL;
|
||||
|
||||
dqopt->files[type] = igrab(inode);
|
||||
if (!dqopt->files[type])
|
||||
return -EIO;
|
||||
|
|
|
|||
|
|
@ -471,7 +471,7 @@ struct fileIdentDesc {
|
|||
uint8_t lengthFileIdent;
|
||||
struct long_ad icb;
|
||||
__le16 lengthOfImpUse;
|
||||
uint8_t impUse[];
|
||||
/* uint8_t impUse[]; */
|
||||
/* uint8_t fileIdent[]; */
|
||||
/* uint8_t padding[]; */
|
||||
} __packed;
|
||||
|
|
|
|||
|
|
@ -86,7 +86,7 @@ struct udf_virtual_data {
|
|||
struct udf_bitmap {
|
||||
__u32 s_extPosition;
|
||||
int s_nr_groups;
|
||||
struct buffer_head *s_block_bitmap[];
|
||||
struct buffer_head *s_block_bitmap[] __counted_by(s_nr_groups);
|
||||
};
|
||||
|
||||
struct udf_part_map {
|
||||
|
|
|
|||
|
|
@ -551,10 +551,24 @@ static inline void folio_zero_range(struct folio *folio,
|
|||
zero_user_segments(&folio->page, start, start + length, 0, 0);
|
||||
}
|
||||
|
||||
static inline void unmap_and_put_page(struct page *page, void *addr)
|
||||
/**
|
||||
* folio_release_kmap - Unmap a folio and drop a refcount.
|
||||
* @folio: The folio to release.
|
||||
* @addr: The address previously returned by a call to kmap_local_folio().
|
||||
*
|
||||
* It is common, eg in directory handling to kmap a folio. This function
|
||||
* unmaps the folio and drops the refcount that was being held to keep the
|
||||
* folio alive while we accessed it.
|
||||
*/
|
||||
static inline void folio_release_kmap(struct folio *folio, void *addr)
|
||||
{
|
||||
kunmap_local(addr);
|
||||
put_page(page);
|
||||
folio_put(folio);
|
||||
}
|
||||
|
||||
static inline void unmap_and_put_page(struct page *page, void *addr)
|
||||
{
|
||||
folio_release_kmap(page_folio(page), addr);
|
||||
}
|
||||
|
||||
#endif /* _LINUX_HIGHMEM_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue