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ext4: add error checking to calls to ext4_handle_dirty_metadata()

Browse source 
Call ext4_std_error() in various places when we can't bail out
cleanly, so the file system can be marked as in error.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2011-01-10 12:46:59 -05:00
parent ca6e909f9b
commit b40971426a
3 changed files with 89 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

64
fs/ext4/resize.c
View file

@ -220,7 +220,11 @@ static int setup_new_group_blocks(struct super_block *sb,
memcpy(gdb->b_data, sbi->s_group_desc[i]->b_data, gdb->b_size);
set_buffer_uptodate(gdb);
unlock_buffer(gdb);
ext4_handle_dirty_metadata(handle, NULL, gdb);
err = ext4_handle_dirty_metadata(handle, NULL, gdb);
if (unlikely(err)) {
brelse(gdb);
goto exit_bh;
}
ext4_set_bit(bit, bh->b_data);
brelse(gdb);
}
@ -253,7 +257,11 @@ static int setup_new_group_blocks(struct super_block *sb,
ext4_mark_bitmap_end(input->blocks_count, sb->s_blocksize * 8,
bh->b_data);
ext4_handle_dirty_metadata(handle, NULL, bh);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
if (unlikely(err)) {
ext4_std_error(sb, err);
goto exit_bh;
}
brelse(bh);
/* Mark unused entries in inode bitmap used */
ext4_debug("clear inode bitmap %#04llx (+%llu)\n",
@ -265,7 +273,9 @@ static int setup_new_group_blocks(struct super_block *sb,
ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb), sb->s_blocksize * 8,
bh->b_data);
ext4_handle_dirty_metadata(handle, NULL, bh);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
if (unlikely(err))
ext4_std_error(sb, err);
exit_bh:
brelse(bh);
@ -417,17 +427,21 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
goto exit_dind;
}
if ((err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh)))
err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
if (unlikely(err))
goto exit_dind;
if ((err = ext4_journal_get_write_access(handle, *primary)))
err = ext4_journal_get_write_access(handle, *primary);
if (unlikely(err))
goto exit_sbh;
if ((err = ext4_journal_get_write_access(handle, dind)))
goto exit_primary;
err = ext4_journal_get_write_access(handle, dind);
if (unlikely(err))
ext4_std_error(sb, err);
/* ext4_reserve_inode_write() gets a reference on the iloc */
if ((err = ext4_reserve_inode_write(handle, inode, &iloc)))
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (unlikely(err))
goto exit_dindj;
n_group_desc = kmalloc((gdb_num + 1) * sizeof(struct buffer_head *),
@ -449,12 +463,20 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
* reserved inode, and will become GDT blocks (primary and backup).
*/
data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)] = 0;
ext4_handle_dirty_metadata(handle, NULL, dind);
brelse(dind);
err = ext4_handle_dirty_metadata(handle, NULL, dind);
if (unlikely(err)) {
ext4_std_error(sb, err);
goto exit_inode;
}
inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >> 9;
ext4_mark_iloc_dirty(handle, inode, &iloc);
memset((*primary)->b_data, 0, sb->s_blocksize);
ext4_handle_dirty_metadata(handle, NULL, *primary);
err = ext4_handle_dirty_metadata(handle, NULL, *primary);
if (unlikely(err)) {
ext4_std_error(sb, err);
goto exit_inode;
}
brelse(dind);
o_group_desc = EXT4_SB(sb)->s_group_desc;
memcpy(n_group_desc, o_group_desc,
@ -465,19 +487,19 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
kfree(o_group_desc);
le16_add_cpu(&es->s_reserved_gdt_blocks, -1);
ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh);
err = ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh);
if (err)
ext4_std_error(sb, err);
return 0;
return err;
exit_inode:
/* ext4_journal_release_buffer(handle, iloc.bh); */
brelse(iloc.bh);
exit_dindj:
/* ext4_journal_release_buffer(handle, dind); */
exit_primary:
/* ext4_journal_release_buffer(handle, *primary); */
exit_sbh:
/* ext4_journal_release_buffer(handle, *primary); */
/* ext4_journal_release_buffer(handle, EXT4_SB(sb)->s_sbh); */
exit_dind:
brelse(dind);
exit_bh:
@ -660,7 +682,9 @@ static void update_backups(struct super_block *sb,
memset(bh->b_data + size, 0, rest);
set_buffer_uptodate(bh);
unlock_buffer(bh);
ext4_handle_dirty_metadata(handle, NULL, bh);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
if (unlikely(err))
ext4_std_error(sb, err);
brelse(bh);
}
if ((err2 = ext4_journal_stop(handle)) && !err)
@ -878,7 +902,11 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
/* Update the global fs size fields */
sbi->s_groups_count++;
ext4_handle_dirty_metadata(handle, NULL, primary);
err = ext4_handle_dirty_metadata(handle, NULL, primary);
if (unlikely(err)) {
ext4_std_error(sb, err);
goto exit_journal;
}
/* Update the reserved block counts only once the new group is
* active. */