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Diffstat (limited to 'fs/ext4/namei.c')
-rw-r--r--fs/ext4/namei.c113
1 files changed, 66 insertions, 47 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 63adcb79298..fec0b4c2f5f 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -74,10 +74,6 @@ static struct buffer_head *ext4_append(handle_t *handle,
#define assert(test) J_ASSERT(test)
#endif
-#ifndef swap
-#define swap(x, y) do { typeof(x) z = x; x = y; y = z; } while (0)
-#endif
-
#ifdef DX_DEBUG
#define dxtrace(command) command
#else
@@ -372,6 +368,8 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
goto fail;
}
hinfo->hash_version = root->info.hash_version;
+ if (hinfo->hash_version <= DX_HASH_TEA)
+ hinfo->hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;
hinfo->seed = EXT4_SB(dir->i_sb)->s_hash_seed;
if (d_name)
ext4fs_dirhash(d_name->name, d_name->len, hinfo);
@@ -641,6 +639,9 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
dir = dir_file->f_path.dentry->d_inode;
if (!(EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) {
hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
+ if (hinfo.hash_version <= DX_HASH_TEA)
+ hinfo.hash_version +=
+ EXT4_SB(dir->i_sb)->s_hash_unsigned;
hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;
count = htree_dirblock_to_tree(dir_file, dir, 0, &hinfo,
start_hash, start_minor_hash);
@@ -806,7 +807,7 @@ static inline int ext4_match (int len, const char * const name,
static inline int search_dirblock(struct buffer_head *bh,
struct inode *dir,
const struct qstr *d_name,
- unsigned long offset,
+ unsigned int offset,
struct ext4_dir_entry_2 ** res_dir)
{
struct ext4_dir_entry_2 * de;
@@ -1043,11 +1044,11 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
bh = ext4_find_entry(dir, &dentry->d_name, &de);
inode = NULL;
if (bh) {
- unsigned long ino = le32_to_cpu(de->inode);
+ __u32 ino = le32_to_cpu(de->inode);
brelse(bh);
if (!ext4_valid_inum(dir->i_sb, ino)) {
ext4_error(dir->i_sb, "ext4_lookup",
- "bad inode number: %lu", ino);
+ "bad inode number: %u", ino);
return ERR_PTR(-EIO);
}
inode = ext4_iget(dir->i_sb, ino);
@@ -1060,7 +1061,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
struct dentry *ext4_get_parent(struct dentry *child)
{
- unsigned long ino;
+ __u32 ino;
struct inode *inode;
static const struct qstr dotdot = {
.name = "..",
@@ -1078,7 +1079,7 @@ struct dentry *ext4_get_parent(struct dentry *child)
if (!ext4_valid_inum(child->d_inode->i_sb, ino)) {
ext4_error(child->d_inode->i_sb, "ext4_get_parent",
- "bad inode number: %lu", ino);
+ "bad inode number: %u", ino);
return ERR_PTR(-EIO);
}
@@ -1166,9 +1167,9 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
u32 hash2;
struct dx_map_entry *map;
char *data1 = (*bh)->b_data, *data2;
- unsigned split, move, size, i;
+ unsigned split, move, size;
struct ext4_dir_entry_2 *de = NULL, *de2;
- int err = 0;
+ int err = 0, i;
bh2 = ext4_append (handle, dir, &newblock, &err);
if (!(bh2)) {
@@ -1228,10 +1229,10 @@ static struct ext4_dir_entry_2 *do_split(handle_t *handle, struct inode *dir,
de = de2;
}
dx_insert_block(frame, hash2 + continued, newblock);
- err = ext4_journal_dirty_metadata(handle, bh2);
+ err = ext4_handle_dirty_metadata(handle, dir, bh2);
if (err)
goto journal_error;
- err = ext4_journal_dirty_metadata(handle, frame->bh);
+ err = ext4_handle_dirty_metadata(handle, dir, frame->bh);
if (err)
goto journal_error;
brelse(bh2);
@@ -1266,7 +1267,7 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry,
struct inode *dir = dentry->d_parent->d_inode;
const char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
- unsigned long offset = 0;
+ unsigned int offset = 0;
unsigned short reclen;
int nlen, rlen, err;
char *top;
@@ -1335,8 +1336,8 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry,
ext4_update_dx_flag(dir);
dir->i_version++;
ext4_mark_inode_dirty(handle, dir);
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- err = ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ err = ext4_handle_dirty_metadata(handle, dir, bh);
if (err)
ext4_std_error(dir->i_sb, err);
brelse(bh);
@@ -1408,6 +1409,8 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
/* Initialize as for dx_probe */
hinfo.hash_version = root->info.hash_version;
+ if (hinfo.hash_version <= DX_HASH_TEA)
+ hinfo.hash_version += EXT4_SB(dir->i_sb)->s_hash_unsigned;
hinfo.seed = EXT4_SB(dir->i_sb)->s_hash_seed;
ext4fs_dirhash(name, namelen, &hinfo);
frame = frames;
@@ -1437,7 +1440,6 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
- unsigned long offset;
struct buffer_head *bh;
struct ext4_dir_entry_2 *de;
struct super_block *sb;
@@ -1459,7 +1461,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
ext4_mark_inode_dirty(handle, dir);
}
blocks = dir->i_size >> sb->s_blocksize_bits;
- for (block = 0, offset = 0; block < blocks; block++) {
+ for (block = 0; block < blocks; block++) {
bh = ext4_bread(handle, dir, block, 0, &retval);
if(!bh)
return retval;
@@ -1574,7 +1576,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
dxtrace(dx_show_index("node", frames[1].entries));
dxtrace(dx_show_index("node",
((struct dx_node *) bh2->b_data)->entries));
- err = ext4_journal_dirty_metadata(handle, bh2);
+ err = ext4_handle_dirty_metadata(handle, inode, bh2);
if (err)
goto journal_error;
brelse (bh2);
@@ -1600,7 +1602,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
if (err)
goto journal_error;
}
- ext4_journal_dirty_metadata(handle, frames[0].bh);
+ ext4_handle_dirty_metadata(handle, inode, frames[0].bh);
}
de = do_split(handle, dir, &bh, frame, &hinfo, &err);
if (!de)
@@ -1646,8 +1648,8 @@ static int ext4_delete_entry(handle_t *handle,
else
de->inode = 0;
dir->i_version++;
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle, dir, bh);
return 0;
}
i += ext4_rec_len_from_disk(de->rec_len);
@@ -1693,9 +1695,11 @@ static int ext4_add_nondir(handle_t *handle,
if (!err) {
ext4_mark_inode_dirty(handle, inode);
d_instantiate(dentry, inode);
+ unlock_new_inode(inode);
return 0;
}
drop_nlink(inode);
+ unlock_new_inode(inode);
iput(inode);
return err;
}
@@ -1723,7 +1727,7 @@ retry:
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode = ext4_new_inode (handle, dir, mode);
err = PTR_ERR(inode);
@@ -1757,7 +1761,7 @@ retry:
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode = ext4_new_inode(handle, dir, mode);
err = PTR_ERR(inode);
@@ -1793,7 +1797,7 @@ retry:
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode = ext4_new_inode(handle, dir, S_IFDIR | mode);
err = PTR_ERR(inode);
@@ -1822,14 +1826,15 @@ retry:
strcpy(de->name, "..");
ext4_set_de_type(dir->i_sb, de, S_IFDIR);
inode->i_nlink = 2;
- BUFFER_TRACE(dir_block, "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle, dir_block);
+ BUFFER_TRACE(dir_block, "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle, dir, dir_block);
brelse(dir_block);
ext4_mark_inode_dirty(handle, inode);
err = ext4_add_entry(handle, dentry, inode);
if (err) {
out_clear_inode:
clear_nlink(inode);
+ unlock_new_inode(inode);
ext4_mark_inode_dirty(handle, inode);
iput(inode);
goto out_stop;
@@ -1838,6 +1843,7 @@ out_clear_inode:
ext4_update_dx_flag(dir);
ext4_mark_inode_dirty(handle, dir);
d_instantiate(dentry, inode);
+ unlock_new_inode(inode);
out_stop:
ext4_journal_stop(handle);
if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
@@ -1850,7 +1856,7 @@ out_stop:
*/
static int empty_dir(struct inode *inode)
{
- unsigned long offset;
+ unsigned int offset;
struct buffer_head *bh;
struct ext4_dir_entry_2 *de, *de1;
struct super_block *sb;
@@ -1895,7 +1901,7 @@ static int empty_dir(struct inode *inode)
if (err)
ext4_error(sb, __func__,
"error %d reading directory"
- " #%lu offset %lu",
+ " #%lu offset %u",
err, inode->i_ino, offset);
offset += sb->s_blocksize;
continue;
@@ -1933,6 +1939,9 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
struct ext4_iloc iloc;
int err = 0, rc;
+ if (!ext4_handle_valid(handle))
+ return 0;
+
lock_super(sb);
if (!list_empty(&EXT4_I(inode)->i_orphan))
goto out_unlock;
@@ -1961,7 +1970,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
/* Insert this inode at the head of the on-disk orphan list... */
NEXT_ORPHAN(inode) = le32_to_cpu(EXT4_SB(sb)->s_es->s_last_orphan);
EXT4_SB(sb)->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
- err = ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh);
+ err = ext4_handle_dirty_metadata(handle, inode, EXT4_SB(sb)->s_sbh);
rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
if (!err)
err = rc;
@@ -1995,10 +2004,13 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode)
struct list_head *prev;
struct ext4_inode_info *ei = EXT4_I(inode);
struct ext4_sb_info *sbi;
- unsigned long ino_next;
+ __u32 ino_next;
struct ext4_iloc iloc;
int err = 0;
+ if (!ext4_handle_valid(handle))
+ return 0;
+
lock_super(inode->i_sb);
if (list_empty(&ei->i_orphan)) {
unlock_super(inode->i_sb);
@@ -2017,7 +2029,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode)
* transaction handle with which to update the orphan list on
* disk, but we still need to remove the inode from the linked
* list in memory. */
- if (!handle)
+ if (sbi->s_journal && !handle)
goto out;
err = ext4_reserve_inode_write(handle, inode, &iloc);
@@ -2025,19 +2037,19 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode)
goto out_err;
if (prev == &sbi->s_orphan) {
- jbd_debug(4, "superblock will point to %lu\n", ino_next);
+ jbd_debug(4, "superblock will point to %u\n", ino_next);
BUFFER_TRACE(sbi->s_sbh, "get_write_access");
err = ext4_journal_get_write_access(handle, sbi->s_sbh);
if (err)
goto out_brelse;
sbi->s_es->s_last_orphan = cpu_to_le32(ino_next);
- err = ext4_journal_dirty_metadata(handle, sbi->s_sbh);
+ err = ext4_handle_dirty_metadata(handle, inode, sbi->s_sbh);
} else {
struct ext4_iloc iloc2;
struct inode *i_prev =
&list_entry(prev, struct ext4_inode_info, i_orphan)->vfs_inode;
- jbd_debug(4, "orphan inode %lu will point to %lu\n",
+ jbd_debug(4, "orphan inode %lu will point to %u\n",
i_prev->i_ino, ino_next);
err = ext4_reserve_inode_write(handle, i_prev, &iloc2);
if (err)
@@ -2082,7 +2094,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
goto end_rmdir;
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode = dentry->d_inode;
@@ -2136,7 +2148,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
retval = -ENOENT;
bh = ext4_find_entry(dir, &dentry->d_name, &de);
@@ -2193,7 +2205,7 @@ retry:
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode = ext4_new_inode(handle, dir, S_IFLNK|S_IRWXUGO);
err = PTR_ERR(inode);
@@ -2208,10 +2220,10 @@ retry:
* We have a transaction open. All is sweetness. It also sets
* i_size in generic_commit_write().
*/
- err = __page_symlink(inode, symname, l,
- mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS);
+ err = __page_symlink(inode, symname, l, 1);
if (err) {
clear_nlink(inode);
+ unlock_new_inode(inode);
ext4_mark_inode_dirty(handle, inode);
iput(inode);
goto out_stop;
@@ -2256,13 +2268,20 @@ retry:
return PTR_ERR(handle);
if (IS_DIRSYNC(dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode->i_ctime = ext4_current_time(inode);
ext4_inc_count(handle, inode);
atomic_inc(&inode->i_count);
- err = ext4_add_nondir(handle, dentry, inode);
+ err = ext4_add_entry(handle, dentry, inode);
+ if (!err) {
+ ext4_mark_inode_dirty(handle, inode);
+ d_instantiate(dentry, inode);
+ } else {
+ drop_nlink(inode);
+ iput(inode);
+ }
ext4_journal_stop(handle);
if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
goto retry;
@@ -2298,7 +2317,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
return PTR_ERR(handle);
if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
old_bh = ext4_find_entry(old_dir, &old_dentry->d_name, &old_de);
/*
@@ -2352,8 +2371,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
new_dir->i_ctime = new_dir->i_mtime =
ext4_current_time(new_dir);
ext4_mark_inode_dirty(handle, new_dir);
- BUFFER_TRACE(new_bh, "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle, new_bh);
+ BUFFER_TRACE(new_bh, "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle, new_dir, new_bh);
brelse(new_bh);
new_bh = NULL;
}
@@ -2403,8 +2422,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
BUFFER_TRACE(dir_bh, "get_write_access");
ext4_journal_get_write_access(handle, dir_bh);
PARENT_INO(dir_bh->b_data) = cpu_to_le32(new_dir->i_ino);
- BUFFER_TRACE(dir_bh, "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle, dir_bh);
+ BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle, old_dir, dir_bh);
ext4_dec_count(handle, old_dir);
if (new_inode) {
/* checked empty_dir above, can't have another parent,
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 22:54:57 +0000