diff options
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/Kconfig | 1 | ||||
| -rw-r--r-- | fs/f2fs/dir.c | 2 | ||||
| -rw-r--r-- | fs/f2fs/verity.c | 47 |
3 files changed, 47 insertions, 3 deletions
diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig index 9c0cae062498..f0faada30f30 100644 --- a/fs/f2fs/Kconfig +++ b/fs/f2fs/Kconfig @@ -6,6 +6,7 @@ config F2FS_FS select CRYPTO select CRYPTO_CRC32 select F2FS_FS_XATTR if FS_ENCRYPTION + select FS_ENCRYPTION_ALGS if FS_ENCRYPTION help F2FS is based on Log-structured File System (LFS), which supports versatile "flash-friendly" features. The design has been focused on diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index d7c9a2cda489..27d0dd7a16d6 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -1001,7 +1001,7 @@ static int f2fs_readdir(struct file *file, struct dir_context *ctx) if (IS_ENCRYPTED(inode)) { err = fscrypt_get_encryption_info(inode); - if (err && err != -ENOKEY) + if (err) goto out; err = fscrypt_fname_alloc_buffer(inode, F2FS_NAME_LEN, &fstr); diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c index a401ef72bc82..d7d430a6f130 100644 --- a/fs/f2fs/verity.c +++ b/fs/f2fs/verity.c @@ -222,12 +222,55 @@ static int f2fs_get_verity_descriptor(struct inode *inode, void *buf, return size; } +/* + * Prefetch some pages from the file's Merkle tree. + * + * This is basically a stripped-down version of __do_page_cache_readahead() + * which works on pages past i_size. + */ +static void f2fs_merkle_tree_readahead(struct address_space *mapping, + pgoff_t start_index, unsigned long count) +{ + LIST_HEAD(pages); + unsigned int nr_pages = 0; + struct page *page; + pgoff_t index; + struct blk_plug plug; + + for (index = start_index; index < start_index + count; index++) { + page = xa_load(&mapping->i_pages, index); + if (!page || xa_is_value(page)) { + page = __page_cache_alloc(readahead_gfp_mask(mapping)); + if (!page) + break; + page->index = index; + list_add(&page->lru, &pages); + nr_pages++; + } + } + blk_start_plug(&plug); + f2fs_mpage_readpages(mapping, &pages, NULL, nr_pages, true); + blk_finish_plug(&plug); +} + static struct page *f2fs_read_merkle_tree_page(struct inode *inode, - pgoff_t index) + pgoff_t index, + unsigned long num_ra_pages) { + struct page *page; + index += f2fs_verity_metadata_pos(inode) >> PAGE_SHIFT; - return read_mapping_page(inode->i_mapping, index, NULL); + page = find_get_page_flags(inode->i_mapping, index, FGP_ACCESSED); + if (!page || !PageUptodate(page)) { + if (page) + put_page(page); + else if (num_ra_pages > 1) + f2fs_merkle_tree_readahead(inode->i_mapping, index, + num_ra_pages); + page = read_mapping_page(inode->i_mapping, index, NULL); + } + return page; } static int f2fs_write_merkle_tree_block(struct inode *inode, const void *buf, |