diff options
Diffstat (limited to 'fs/ext2')
| -rw-r--r-- | fs/ext2/Kconfig | 1 | ||||
| -rw-r--r-- | fs/ext2/balloc.c | 11 | ||||
| -rw-r--r-- | fs/ext2/dir.c | 1 | ||||
| -rw-r--r-- | fs/ext2/file.c | 8 | ||||
| -rw-r--r-- | fs/ext2/inode.c | 2 |
5 files changed, 16 insertions, 7 deletions
diff --git a/fs/ext2/Kconfig b/fs/ext2/Kconfig index d6cfb18495..d5bce83ad9 100644 --- a/fs/ext2/Kconfig +++ b/fs/ext2/Kconfig @@ -3,7 +3,6 @@ config EXT2_FS tristate "Second extended fs support (DEPRECATED)" select BUFFER_HEAD select FS_IOMAP - select LEGACY_DIRECT_IO help Ext2 is a standard Linux file system for hard disks. diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c index 1bfd6ab110..b8cfab8f98 100644 --- a/fs/ext2/balloc.c +++ b/fs/ext2/balloc.c @@ -77,26 +77,33 @@ static int ext2_valid_block_bitmap(struct super_block *sb, ext2_grpblk_t next_zero_bit; ext2_fsblk_t bitmap_blk; ext2_fsblk_t group_first_block; + ext2_grpblk_t max_bit; group_first_block = ext2_group_first_block_no(sb, block_group); + max_bit = ext2_group_last_block_no(sb, block_group) - group_first_block; /* check whether block bitmap block number is set */ bitmap_blk = le32_to_cpu(desc->bg_block_bitmap); offset = bitmap_blk - group_first_block; - if (!ext2_test_bit(offset, bh->b_data)) + if (offset < 0 || offset > max_bit || + !ext2_test_bit(offset, bh->b_data)) /* bad block bitmap */ goto err_out; /* check whether the inode bitmap block number is set */ bitmap_blk = le32_to_cpu(desc->bg_inode_bitmap); offset = bitmap_blk - group_first_block; - if (!ext2_test_bit(offset, bh->b_data)) + if (offset < 0 || offset > max_bit || + !ext2_test_bit(offset, bh->b_data)) /* bad block bitmap */ goto err_out; /* check whether the inode table block number is set */ bitmap_blk = le32_to_cpu(desc->bg_inode_table); offset = bitmap_blk - group_first_block; + if (offset < 0 || offset > max_bit || + offset + EXT2_SB(sb)->s_itb_per_group - 1 > max_bit) + goto err_out; next_zero_bit = ext2_find_next_zero_bit(bh->b_data, offset + EXT2_SB(sb)->s_itb_per_group, offset); diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c index 4fb155b5a9..087457061c 100644 --- a/fs/ext2/dir.c +++ b/fs/ext2/dir.c @@ -175,7 +175,6 @@ Eend: (unsigned long) le32_to_cpu(p->inode)); } fail: - folio_set_error(folio); return false; } diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 4ddc36f4db..10b061ac5b 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -302,6 +302,12 @@ static ssize_t ext2_file_write_iter(struct kiocb *iocb, struct iov_iter *from) return generic_file_write_iter(iocb, from); } +static int ext2_file_open(struct inode *inode, struct file *filp) +{ + filp->f_mode |= FMODE_CAN_ODIRECT; + return dquot_file_open(inode, filp); +} + const struct file_operations ext2_file_operations = { .llseek = generic_file_llseek, .read_iter = ext2_file_read_iter, @@ -311,7 +317,7 @@ const struct file_operations ext2_file_operations = { .compat_ioctl = ext2_compat_ioctl, #endif .mmap = ext2_file_mmap, - .open = dquot_file_open, + .open = ext2_file_open, .release = ext2_release_file, .fsync = ext2_fsync, .get_unmapped_area = thp_get_unmapped_area, diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index f3d570a930..0caa1650ce 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -965,7 +965,6 @@ const struct address_space_operations ext2_aops = { .write_begin = ext2_write_begin, .write_end = ext2_write_end, .bmap = ext2_bmap, - .direct_IO = noop_direct_IO, .writepages = ext2_writepages, .migrate_folio = buffer_migrate_folio, .is_partially_uptodate = block_is_partially_uptodate, @@ -974,7 +973,6 @@ const struct address_space_operations ext2_aops = { static const struct address_space_operations ext2_dax_aops = { .writepages = ext2_dax_writepages, - .direct_IO = noop_direct_IO, .dirty_folio = noop_dirty_folio, }; |