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ext4: convert ext4_bread() to use the ERR_PTR convention

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Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o
2014-08-29 20:52:15 -04:00
parent 1056008226
commit 1c2150283c
5 changed files with 34 additions and 43 deletions
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34
fs/ext4/namei.c
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@@ -53,7 +53,7 @@ static struct buffer_head *ext4_append(handle_t *handle,
ext4_lblk_t *block)
{
struct buffer_head *bh;
int err = 0;
int err;
if (unlikely(EXT4_SB(inode->i_sb)->s_max_dir_size_kb &&
((inode->i_size >> 10) >=
@@ -62,9 +62,9 @@ static struct buffer_head *ext4_append(handle_t *handle,
*block = inode->i_size >> inode->i_sb->s_blocksize_bits;
bh = ext4_bread(handle, inode, *block, 1, &err);
if (!bh)
return ERR_PTR(err);
bh = ext4_bread(handle, inode, *block, 1);
if (IS_ERR(bh))
return bh;
inode->i_size += inode->i_sb->s_blocksize;
EXT4_I(inode)->i_disksize = inode->i_size;
BUFFER_TRACE(bh, "get_write_access");
@@ -94,20 +94,20 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
{
struct buffer_head *bh;
struct ext4_dir_entry *dirent;
int err = 0, is_dx_block = 0;
int is_dx_block = 0;
bh = ext4_bread(NULL, inode, block, 0, &err);
if (!bh) {
if (err == 0) {
ext4_error_inode(inode, __func__, line, block,
"Directory hole found");
return ERR_PTR(-EIO);
}
bh = ext4_bread(NULL, inode, block, 0);
if (IS_ERR(bh)) {
__ext4_warning(inode->i_sb, __func__, line,
"error reading directory block "
"(ino %lu, block %lu)", inode->i_ino,
"error %ld reading directory block "
"(ino %lu, block %lu)", PTR_ERR(bh), inode->i_ino,
(unsigned long) block);
return ERR_PTR(err);
return bh;
}
if (!bh) {
ext4_error_inode(inode, __func__, line, block, "Directory hole found");
return ERR_PTR(-EIO);
}
dirent = (struct ext4_dir_entry *) bh->b_data;
/* Determine whether or not we have an index block */
@@ -640,7 +640,9 @@ struct stats dx_show_entries(struct dx_hash_info *hinfo, struct inode *dir,
u32 range = i < count - 1? (dx_get_hash(entries + 1) - hash): ~hash;
struct stats stats;
printk("%s%3u:%03u hash %8x/%8x ",levels?"":" ", i, block, hash, range);
if (!(bh = ext4_bread (NULL,dir, block, 0,&err))) continue;
bh = ext4_bread(NULL,dir, block, 0);
if (!bh || IS_ERR(bh))
continue;
stats = levels?
dx_show_entries(hinfo, dir, ((struct dx_node *) bh->b_data)->entries, levels - 1):
dx_show_leaf(hinfo, (struct ext4_dir_entry_2 *) bh->b_data, blocksize, 0);