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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

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Pull btrfs fixes from Chris Mason.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: limit the path size in send to PATH_MAX
  Btrfs: correctly set profile flags on seqlock retry
  Btrfs: use correct key when repeating search for extent item
  Btrfs: fix inode caching vs tree log
  Btrfs: fix possible memory leaks in open_ctree()
  Btrfs: avoid triggering bug_on() when we fail to start inode caching task
  Btrfs: move btrfs_{set,clear}_and_info() to ctree.h
  btrfs: replace error code from btrfs_drop_extents
  btrfs: Change the hole range to a more accurate value.
  btrfs: fix use-after-free in mount_subvol()
This commit is contained in:
Linus Torvalds 2014-04-27 13:26:28 -07:00
commit 33c0022f0e
8 changed files with 48 additions and 45 deletions
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14
fs/btrfs/ctree.h
View File

@ -2058,6 +2058,20 @@ struct btrfs_ioctl_defrag_range_args {
#define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt)
#define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
BTRFS_MOUNT_##opt)
#define btrfs_set_and_info(root, opt, fmt, args...) \
{ \
if (!btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_set_opt(root->fs_info->mount_opt, opt); \
}
#define btrfs_clear_and_info(root, opt, fmt, args...) \
{ \
if (btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_clear_opt(root->fs_info->mount_opt, opt); \
}
/*
* Inode flags
*/

10
fs/btrfs/disk-io.c
View File

@ -2861,7 +2861,7 @@ retry_root_backup:
printk(KERN_ERR "BTRFS: failed to read log tree\n");
free_extent_buffer(log_tree_root->node);
kfree(log_tree_root);
goto fail_trans_kthread;
goto fail_qgroup;
}
/* returns with log_tree_root freed on success */
ret = btrfs_recover_log_trees(log_tree_root);
@ -2870,24 +2870,24 @@ retry_root_backup:
"Failed to recover log tree");
free_extent_buffer(log_tree_root->node);
kfree(log_tree_root);
goto fail_trans_kthread;
goto fail_qgroup;
}
if (sb->s_flags & MS_RDONLY) {
ret = btrfs_commit_super(tree_root);
if (ret)
goto fail_trans_kthread;
goto fail_qgroup;
}
}
ret = btrfs_find_orphan_roots(tree_root);
if (ret)
goto fail_trans_kthread;
goto fail_qgroup;
if (!(sb->s_flags & MS_RDONLY)) {
ret = btrfs_cleanup_fs_roots(fs_info);
if (ret)
goto fail_trans_kthread;
goto fail_qgroup;
ret = btrfs_recover_relocation(tree_root);
if (ret < 0) {

6
fs/btrfs/extent-tree.c
View File

@ -1542,6 +1542,7 @@ again:
ret = 0;
}
if (ret) {
key.objectid = bytenr;
key.type = BTRFS_EXTENT_ITEM_KEY;
key.offset = num_bytes;
btrfs_release_path(path);
@ -3542,11 +3543,13 @@ static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags)
return extended_to_chunk(flags | tmp);
}
static u64 get_alloc_profile(struct btrfs_root *root, u64 flags)
static u64 get_alloc_profile(struct btrfs_root *root, u64 orig_flags)
{
unsigned seq;
u64 flags;
do {
flags = orig_flags;
seq = read_seqbegin(&root->fs_info->profiles_lock);
if (flags & BTRFS_BLOCK_GROUP_DATA)
@ -5719,6 +5722,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
if (ret > 0 && skinny_metadata) {
skinny_metadata = false;
key.objectid = bytenr;
key.type = BTRFS_EXTENT_ITEM_KEY;
key.offset = num_bytes;
btrfs_release_path(path);

8
fs/btrfs/file.c
View File

@ -800,7 +800,7 @@ next_slot:
if (start > key.offset && end < extent_end) {
BUG_ON(del_nr > 0);
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
ret = -EINVAL;
ret = -EOPNOTSUPP;
break;
}
@ -846,7 +846,7 @@ next_slot:
*/
if (start <= key.offset && end < extent_end) {
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
ret = -EINVAL;
ret = -EOPNOTSUPP;
break;
}
@ -872,7 +872,7 @@ next_slot:
if (start > key.offset && end >= extent_end) {
BUG_ON(del_nr > 0);
if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
ret = -EINVAL;
ret = -EOPNOTSUPP;
break;
}
@ -1777,7 +1777,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
start_pos = round_down(pos, root->sectorsize);
if (start_pos > i_size_read(inode)) {
/* Expand hole size to cover write data, preventing empty gap */
end_pos = round_up(pos + iov->iov_len, root->sectorsize);
end_pos = round_up(pos + count, root->sectorsize);
err = btrfs_cont_expand(inode, i_size_read(inode), end_pos);
if (err) {
mutex_unlock(&inode->i_mutex);

24
fs/btrfs/inode-map.c
View File

@ -176,7 +176,11 @@ static void start_caching(struct btrfs_root *root)
tsk = kthread_run(caching_kthread, root, "btrfs-ino-cache-%llu\n",
root->root_key.objectid);
BUG_ON(IS_ERR(tsk)); /* -ENOMEM */
if (IS_ERR(tsk)) {
btrfs_warn(root->fs_info, "failed to start inode caching task");
btrfs_clear_and_info(root, CHANGE_INODE_CACHE,
"disabling inode map caching");
}
}
int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid)
@ -205,24 +209,14 @@ again:
void btrfs_return_ino(struct btrfs_root *root, u64 objectid)
{
struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
struct btrfs_free_space_ctl *pinned = root->free_ino_pinned;
if (!btrfs_test_opt(root, INODE_MAP_CACHE))
return;
again:
if (root->cached == BTRFS_CACHE_FINISHED) {
__btrfs_add_free_space(ctl, objectid, 1);
__btrfs_add_free_space(pinned, objectid, 1);
} else {
/*
* If we are in the process of caching free ino chunks,
* to avoid adding the same inode number to the free_ino
* tree twice due to cross transaction, we'll leave it
* in the pinned tree until a transaction is committed
* or the caching work is done.
*/
down_write(&root->fs_info->commit_root_sem);
spin_lock(&root->cache_lock);
if (root->cached == BTRFS_CACHE_FINISHED) {
@ -234,11 +228,7 @@ again:
start_caching(root);
if (objectid <= root->cache_progress ||
objectid >= root->highest_objectid)
__btrfs_add_free_space(ctl, objectid, 1);
else
__btrfs_add_free_space(pinned, objectid, 1);
__btrfs_add_free_space(pinned, objectid, 1);
up_write(&root->fs_info->commit_root_sem);
}

4
fs/btrfs/ioctl.c
View File

@ -3066,7 +3066,7 @@ process_slot:
new_key.offset + datal,
1);
if (ret) {
if (ret != -EINVAL)
if (ret != -EOPNOTSUPP)
btrfs_abort_transaction(trans,
root, ret);
btrfs_end_transaction(trans, root);
@ -3141,7 +3141,7 @@ process_slot:
new_key.offset + datal,
1);
if (ret) {
if (ret != -EINVAL)
if (ret != -EOPNOTSUPP)
btrfs_abort_transaction(trans,
root, ret);
btrfs_end_transaction(trans, root);

5
fs/btrfs/send.c
View File

@ -349,6 +349,11 @@ static int fs_path_ensure_buf(struct fs_path *p, int len)
if (p->buf_len >= len)
return 0;
if (len > PATH_MAX) {
WARN_ON(1);
return -ENOMEM;
}
path_len = p->end - p->start;
old_buf_len = p->buf_len;

22
fs/btrfs/super.c
View File

@ -385,20 +385,6 @@ static match_table_t tokens = {
{Opt_err, NULL},
};
#define btrfs_set_and_info(root, opt, fmt, args...) \
{ \
if (!btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_set_opt(root->fs_info->mount_opt, opt); \
}
#define btrfs_clear_and_info(root, opt, fmt, args...) \
{ \
if (btrfs_test_opt(root, opt)) \
btrfs_info(root->fs_info, fmt, ##args); \
btrfs_clear_opt(root->fs_info->mount_opt, opt); \
}
/*
* Regular mount options parser. Everything that is needed only when
* reading in a new superblock is parsed here.
@ -1186,7 +1172,6 @@ static struct dentry *mount_subvol(const char *subvol_name, int flags,
return ERR_PTR(-ENOMEM);
mnt = vfs_kern_mount(&btrfs_fs_type, flags, device_name,
newargs);
kfree(newargs);
if (PTR_RET(mnt) == -EBUSY) {
if (flags & MS_RDONLY) {
@ -1196,17 +1181,22 @@ static struct dentry *mount_subvol(const char *subvol_name, int flags,
int r;
mnt = vfs_kern_mount(&btrfs_fs_type, flags | MS_RDONLY, device_name,
newargs);
if (IS_ERR(mnt))
if (IS_ERR(mnt)) {
kfree(newargs);
return ERR_CAST(mnt);
}
r = btrfs_remount(mnt->mnt_sb, &flags, NULL);
if (r < 0) {
/* FIXME: release vfsmount mnt ??*/
kfree(newargs);
return ERR_PTR(r);
}
}
}
kfree(newargs);
if (IS_ERR(mnt))
return ERR_CAST(mnt);