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-rw-r--r--fs/btrfs/backref.c14
-rw-r--r--fs/btrfs/backref.h3
-rw-r--r--fs/btrfs/ctree.c21
-rw-r--r--fs/btrfs/ctree.h3
-rw-r--r--fs/btrfs/delayed-inode.c2
-rw-r--r--fs/btrfs/delayed-inode.h2
-rw-r--r--fs/btrfs/dev-replace.c14
-rw-r--r--fs/btrfs/ioctl.c18
-rw-r--r--fs/btrfs/relocation.c7
-rw-r--r--fs/btrfs/super.c4
-rw-r--r--fs/btrfs/volumes.c109
-rw-r--r--fs/btrfs/volumes.h6
-rw-r--r--fs/btrfs/xattr.c2
-rw-r--r--fs/btrfs/xattr.h2
14 files changed, 111 insertions, 96 deletions
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index b7d54efb4728..a4a809efc92f 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -3196,12 +3196,14 @@ static int handle_direct_tree_backref(struct btrfs_backref_cache *cache,
* We still need to do a tree search to find out the parents. This is for
* TREE_BLOCK_REF backref (keyed or inlined).
*
+ * @trans: Transaction handle.
* @ref_key: The same as @ref_key in handle_direct_tree_backref()
* @tree_key: The first key of this tree block.
* @path: A clean (released) path, to avoid allocating path every time
* the function get called.
*/
-static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
+static int handle_indirect_tree_backref(struct btrfs_trans_handle *trans,
+ struct btrfs_backref_cache *cache,
struct btrfs_path *path,
struct btrfs_key *ref_key,
struct btrfs_key *tree_key,
@@ -3315,7 +3317,7 @@ static int handle_indirect_tree_backref(struct btrfs_backref_cache *cache,
* If we know the block isn't shared we can avoid
* checking its backrefs.
*/
- if (btrfs_block_can_be_shared(root, eb))
+ if (btrfs_block_can_be_shared(trans, root, eb))
upper->checked = 0;
else
upper->checked = 1;
@@ -3363,11 +3365,13 @@ out:
* links aren't yet bi-directional. Needs to finish such links.
* Use btrfs_backref_finish_upper_links() to finish such linkage.
*
+ * @trans: Transaction handle.
* @path: Released path for indirect tree backref lookup
* @iter: Released backref iter for extent tree search
* @node_key: The first key of the tree block
*/
-int btrfs_backref_add_tree_node(struct btrfs_backref_cache *cache,
+int btrfs_backref_add_tree_node(struct btrfs_trans_handle *trans,
+ struct btrfs_backref_cache *cache,
struct btrfs_path *path,
struct btrfs_backref_iter *iter,
struct btrfs_key *node_key,
@@ -3467,8 +3471,8 @@ int btrfs_backref_add_tree_node(struct btrfs_backref_cache *cache,
* offset means the root objectid. We need to search
* the tree to get its parent bytenr.
*/
- ret = handle_indirect_tree_backref(cache, path, &key, node_key,
- cur);
+ ret = handle_indirect_tree_backref(trans, cache, path,
+ &key, node_key, cur);
if (ret < 0)
goto out;
}
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h
index 1616e3e3f1e4..71d535e03dca 100644
--- a/fs/btrfs/backref.h
+++ b/fs/btrfs/backref.h
@@ -540,7 +540,8 @@ static inline void btrfs_backref_panic(struct btrfs_fs_info *fs_info,
bytenr);
}
-int btrfs_backref_add_tree_node(struct btrfs_backref_cache *cache,
+int btrfs_backref_add_tree_node(struct btrfs_trans_handle *trans,
+ struct btrfs_backref_cache *cache,
struct btrfs_path *path,
struct btrfs_backref_iter *iter,
struct btrfs_key *node_key,
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index da519c1b6ad0..617d4827eec2 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -367,7 +367,8 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
/*
* check if the tree block can be shared by multiple trees
*/
-int btrfs_block_can_be_shared(struct btrfs_root *root,
+int btrfs_block_can_be_shared(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
struct extent_buffer *buf)
{
/*
@@ -376,11 +377,21 @@ int btrfs_block_can_be_shared(struct btrfs_root *root,
* not allocated by tree relocation, we know the block is not shared.
*/
if (test_bit(BTRFS_ROOT_SHAREABLE, &root->state) &&
- buf != root->node && buf != root->commit_root &&
+ buf != root->node &&
(btrfs_header_generation(buf) <=
btrfs_root_last_snapshot(&root->root_item) ||
- btrfs_header_flag(buf, BTRFS_HEADER_FLAG_RELOC)))
- return 1;
+ btrfs_header_flag(buf, BTRFS_HEADER_FLAG_RELOC))) {
+ if (buf != root->commit_root)
+ return 1;
+ /*
+ * An extent buffer that used to be the commit root may still be
+ * shared because the tree height may have increased and it
+ * became a child of a higher level root. This can happen when
+ * snapshotting a subvolume created in the current transaction.
+ */
+ if (btrfs_header_generation(buf) == trans->transid)
+ return 1;
+ }
return 0;
}
@@ -415,7 +426,7 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
* are only allowed for blocks use full backrefs.
*/
- if (btrfs_block_can_be_shared(root, buf)) {
+ if (btrfs_block_can_be_shared(trans, root, buf)) {
ret = btrfs_lookup_extent_info(trans, fs_info, buf->start,
btrfs_header_level(buf), 1,
&refs, &flags);
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9419f4e37a58..ff40acd63a37 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -540,7 +540,8 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
struct extent_buffer **cow_ret, u64 new_root_objectid);
-int btrfs_block_can_be_shared(struct btrfs_root *root,
+int btrfs_block_can_be_shared(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
struct extent_buffer *buf);
int btrfs_del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int level, int slot);
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 1f39f8b5f8f4..c401908eb468 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -313,7 +313,7 @@ static struct btrfs_delayed_item *btrfs_alloc_delayed_item(u16 data_len,
{
struct btrfs_delayed_item *item;
- item = kmalloc(sizeof(*item) + data_len, GFP_NOFS);
+ item = kmalloc(struct_size(item, data, data_len), GFP_NOFS);
if (item) {
item->data_len = data_len;
item->type = type;
diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h
index dc1085b2a397..1da213197f55 100644
--- a/fs/btrfs/delayed-inode.h
+++ b/fs/btrfs/delayed-inode.h
@@ -95,7 +95,7 @@ struct btrfs_delayed_item {
bool logged;
/* The maximum leaf size is 64K, so u16 is more than enough. */
u16 data_len;
- char data[];
+ char data[] __counted_by(data_len);
};
static inline void btrfs_init_delayed_root(
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index fff22ed55c42..6b5b6cec13c4 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -247,6 +247,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
u64 devid = BTRFS_DEV_REPLACE_DEVID;
int ret = 0;
@@ -257,12 +258,13 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return -EINVAL;
}
- bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
- fs_info->bdev_holder, NULL);
- if (IS_ERR(bdev)) {
+ bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
+ if (IS_ERR(bdev_handle)) {
btrfs_err(fs_info, "target device %s is invalid!", device_path);
- return PTR_ERR(bdev);
+ return PTR_ERR(bdev_handle);
}
+ bdev = bdev_handle->bdev;
if (!btrfs_check_device_zone_type(fs_info, bdev)) {
btrfs_err(fs_info,
@@ -313,9 +315,9 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
device->commit_bytes_used = device->bytes_used;
device->fs_info = fs_info;
device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
device->fs_devices = fs_devices;
@@ -334,7 +336,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return 0;
error:
- blkdev_put(bdev, fs_info->bdev_holder);
+ bdev_release(bdev_handle);
return ret;
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8e7d03bc1b56..108edf8ffedf 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2676,8 +2676,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args_v2 *vol_args;
- struct block_device *bdev = NULL;
- void *holder;
+ struct bdev_handle *bdev_handle = NULL;
int ret;
bool cancel = false;
@@ -2714,7 +2713,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
goto err_drop;
/* Exclusive operation is now claimed */
- ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
+ ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
btrfs_exclop_finish(fs_info);
@@ -2728,8 +2727,8 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
}
err_drop:
mnt_drop_write_file(file);
- if (bdev)
- blkdev_put(bdev, holder);
+ if (bdev_handle)
+ bdev_release(bdev_handle);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
@@ -2742,8 +2741,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args *vol_args;
- struct block_device *bdev = NULL;
- void *holder;
+ struct bdev_handle *bdev_handle = NULL;
int ret;
bool cancel = false;
@@ -2770,15 +2768,15 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
ret = exclop_start_or_cancel_reloc(fs_info, BTRFS_EXCLOP_DEV_REMOVE,
cancel);
if (ret == 0) {
- ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
+ ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
if (!ret)
btrfs_info(fs_info, "disk deleted %s", vol_args->name);
btrfs_exclop_finish(fs_info);
}
mnt_drop_write_file(file);
- if (bdev)
- blkdev_put(bdev, holder);
+ if (bdev_handle)
+ bdev_release(bdev_handle);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 9951a0caf5bb..c6d4bb8cbe29 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -466,6 +466,7 @@ static bool handle_useless_nodes(struct reloc_control *rc,
* cached.
*/
static noinline_for_stack struct btrfs_backref_node *build_backref_tree(
+ struct btrfs_trans_handle *trans,
struct reloc_control *rc, struct btrfs_key *node_key,
int level, u64 bytenr)
{
@@ -499,8 +500,8 @@ static noinline_for_stack struct btrfs_backref_node *build_backref_tree(
/* Breadth-first search to build backref cache */
do {
- ret = btrfs_backref_add_tree_node(cache, path, iter, node_key,
- cur);
+ ret = btrfs_backref_add_tree_node(trans, cache, path, iter,
+ node_key, cur);
if (ret < 0) {
err = ret;
goto out;
@@ -2803,7 +2804,7 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
/* Do tree relocation */
rbtree_postorder_for_each_entry_safe(block, next, blocks, rb_node) {
- node = build_backref_tree(rc, &block->key,
+ node = build_backref_tree(trans, rc, &block->key,
block->level, block->bytenr);
if (IS_ERR(node)) {
err = PTR_ERR(node);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index f49e597e197f..1a093ec0f7e3 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -954,10 +954,6 @@ static int btrfs_parse_subvol_options(const char *options, char **subvol_name,
*subvol_objectid = subvolid;
break;
- case Opt_err:
- btrfs_err(NULL, "unrecognized mount option '%s'", p);
- error = -EINVAL;
- goto out;
default:
break;
}
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5a5a8d488a7b..1f38affa4d9c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -511,37 +511,39 @@ static struct btrfs_fs_devices *find_fsid_with_metadata_uuid(
static int
btrfs_get_bdev_and_sb(const char *device_path, blk_mode_t flags, void *holder,
- int flush, struct block_device **bdev,
+ int flush, struct bdev_handle **bdev_handle,
struct btrfs_super_block **disk_super)
{
+ struct block_device *bdev;
int ret;
- *bdev = blkdev_get_by_path(device_path, flags, holder, NULL);
+ *bdev_handle = bdev_open_by_path(device_path, flags, holder, NULL);
- if (IS_ERR(*bdev)) {
- ret = PTR_ERR(*bdev);
+ if (IS_ERR(*bdev_handle)) {
+ ret = PTR_ERR(*bdev_handle);
goto error;
}
+ bdev = (*bdev_handle)->bdev;
if (flush)
- sync_blockdev(*bdev);
- ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
+ sync_blockdev(bdev);
+ ret = set_blocksize(bdev, BTRFS_BDEV_BLOCKSIZE);
if (ret) {
- blkdev_put(*bdev, holder);
+ bdev_release(*bdev_handle);
goto error;
}
- invalidate_bdev(*bdev);
- *disk_super = btrfs_read_dev_super(*bdev);
+ invalidate_bdev(bdev);
+ *disk_super = btrfs_read_dev_super(bdev);
if (IS_ERR(*disk_super)) {
ret = PTR_ERR(*disk_super);
- blkdev_put(*bdev, holder);
+ bdev_release(*bdev_handle);
goto error;
}
return 0;
error:
- *bdev = NULL;
+ *bdev_handle = NULL;
return ret;
}
@@ -613,7 +615,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
struct btrfs_device *device, blk_mode_t flags,
void *holder)
{
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct btrfs_super_block *disk_super;
u64 devid;
int ret;
@@ -624,7 +626,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
return -EINVAL;
ret = btrfs_get_bdev_and_sb(device->name->str, flags, holder, 1,
- &bdev, &disk_super);
+ &bdev_handle, &disk_super);
if (ret)
return ret;
@@ -648,21 +650,21 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
fs_devices->seeding = true;
} else {
- if (bdev_read_only(bdev))
+ if (bdev_read_only(bdev_handle->bdev))
clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
else
set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
}
- if (!bdev_nonrot(bdev))
+ if (!bdev_nonrot(bdev_handle->bdev))
fs_devices->rotating = true;
- if (bdev_max_discard_sectors(bdev))
+ if (bdev_max_discard_sectors(bdev_handle->bdev))
fs_devices->discardable = true;
- device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
+ device->bdev = bdev_handle->bdev;
clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
- device->holder = holder;
fs_devices->open_devices++;
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
@@ -676,7 +678,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
error_free_page:
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, holder);
+ bdev_release(bdev_handle);
return -EINVAL;
}
@@ -1068,9 +1070,10 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices,
if (device->devid == BTRFS_DEV_REPLACE_DEVID)
continue;
- if (device->bdev) {
- blkdev_put(device->bdev, device->holder);
+ if (device->bdev_handle) {
+ bdev_release(device->bdev_handle);
device->bdev = NULL;
+ device->bdev_handle = NULL;
fs_devices->open_devices--;
}
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
@@ -1115,7 +1118,7 @@ static void btrfs_close_bdev(struct btrfs_device *device)
invalidate_bdev(device->bdev);
}
- blkdev_put(device->bdev, device->holder);
+ bdev_release(device->bdev_handle);
}
static void btrfs_close_one_device(struct btrfs_device *device)
@@ -1363,7 +1366,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
struct btrfs_super_block *disk_super;
bool new_device_added = false;
struct btrfs_device *device = NULL;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
u64 bytenr, bytenr_orig;
int ret;
@@ -1386,18 +1389,19 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
* values temporarily, as the device paths of the fsid are the only
* required information for assembling the volume.
*/
- bdev = blkdev_get_by_path(path, flags, NULL, NULL);
- if (IS_ERR(bdev))
- return ERR_CAST(bdev);
+ bdev_handle = bdev_open_by_path(path, flags, NULL, NULL);
+ if (IS_ERR(bdev_handle))
+ return ERR_CAST(bdev_handle);
bytenr_orig = btrfs_sb_offset(0);
- ret = btrfs_sb_log_location_bdev(bdev, 0, READ, &bytenr);
+ ret = btrfs_sb_log_location_bdev(bdev_handle->bdev, 0, READ, &bytenr);
if (ret) {
device = ERR_PTR(ret);
goto error_bdev_put;
}
- disk_super = btrfs_read_disk_super(bdev, bytenr, bytenr_orig);
+ disk_super = btrfs_read_disk_super(bdev_handle->bdev, bytenr,
+ bytenr_orig);
if (IS_ERR(disk_super)) {
device = ERR_CAST(disk_super);
goto error_bdev_put;
@@ -1410,7 +1414,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
btrfs_release_disk_super(disk_super);
error_bdev_put:
- blkdev_put(bdev, NULL);
+ bdev_release(bdev_handle);
return device;
}
@@ -2087,7 +2091,7 @@ void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info,
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, void **holder)
+ struct bdev_handle **bdev_handle)
{
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
@@ -2196,7 +2200,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
btrfs_assign_next_active_device(device, NULL);
- if (device->bdev) {
+ if (device->bdev_handle) {
cur_devices->open_devices--;
/* remove sysfs entry */
btrfs_sysfs_remove_device(device);
@@ -2212,9 +2216,9 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
* free the device.
*
* We cannot call btrfs_close_bdev() here because we're holding the sb
- * write lock, and blkdev_put() will pull in the ->open_mutex on the
- * block device and it's dependencies. Instead just flush the device
- * and let the caller do the final blkdev_put.
+ * write lock, and bdev_release() will pull in the ->open_mutex on
+ * the block device and it's dependencies. Instead just flush the
+ * device and let the caller do the final bdev_release.
*/
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
btrfs_scratch_superblocks(fs_info, device->bdev,
@@ -2225,8 +2229,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
}
}
- *bdev = device->bdev;
- *holder = device->holder;
+ *bdev_handle = device->bdev_handle;
synchronize_rcu();
btrfs_free_device(device);
@@ -2363,7 +2366,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
const char *path)
{
struct btrfs_super_block *disk_super;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
int ret;
if (!path || !path[0])
@@ -2381,7 +2384,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
}
ret = btrfs_get_bdev_and_sb(path, BLK_OPEN_READ, NULL, 0,
- &bdev, &disk_super);
+ &bdev_handle, &disk_super);
if (ret) {
btrfs_put_dev_args_from_path(args);
return ret;
@@ -2394,7 +2397,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
else
memcpy(args->fsid, disk_super->fsid, BTRFS_FSID_SIZE);
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, NULL);
+ bdev_release(bdev_handle);
return 0;
}
@@ -2614,7 +2617,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
struct btrfs_root *root = fs_info->dev_root;
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct super_block *sb = fs_info->sb;
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_fs_devices *seed_devices = NULL;
@@ -2627,12 +2630,12 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
if (sb_rdonly(sb) && !fs_devices->seeding)
return -EROFS;
- bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
- fs_info->bdev_holder, NULL);
- if (IS_ERR(bdev))
- return PTR_ERR(bdev);
+ bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
+ if (IS_ERR(bdev_handle))
+ return PTR_ERR(bdev_handle);
- if (!btrfs_check_device_zone_type(fs_info, bdev)) {
+ if (!btrfs_check_device_zone_type(fs_info, bdev_handle->bdev)) {
ret = -EINVAL;
goto error;
}
@@ -2644,11 +2647,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
locked = true;
}
- sync_blockdev(bdev);
+ sync_blockdev(bdev_handle->bdev);
rcu_read_lock();
list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) {
- if (device->bdev == bdev) {
+ if (device->bdev == bdev_handle->bdev) {
ret = -EEXIST;
rcu_read_unlock();
goto error;
@@ -2664,7 +2667,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
}
device->fs_info = fs_info;
- device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
+ device->bdev = bdev_handle->bdev;
ret = lookup_bdev(device_path, &device->devt);
if (ret)
goto error_free_device;
@@ -2685,12 +2689,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->io_align = fs_info->sectorsize;
device->sector_size = fs_info->sectorsize;
device->total_bytes =
- round_down(bdev_nr_bytes(bdev), fs_info->sectorsize);
+ round_down(bdev_nr_bytes(device->bdev), fs_info->sectorsize);
device->disk_total_bytes = device->total_bytes;
device->commit_total_bytes = device->total_bytes;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
@@ -2726,7 +2729,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
atomic64_add(device->total_bytes, &fs_info->free_chunk_space);
- if (!bdev_nonrot(bdev))
+ if (!bdev_nonrot(device->bdev))
fs_devices->rotating = true;
orig_super_total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
@@ -2848,7 +2851,7 @@ error_free_zone:
error_free_device:
btrfs_free_device(device);
error:
- blkdev_put(bdev, fs_info->bdev_holder);
+ bdev_release(bdev_handle);
if (locked) {
mutex_unlock(&uuid_mutex);
up_write(&sb->s_umount);
@@ -5109,7 +5112,7 @@ static void init_alloc_chunk_ctl_policy_regular(
ASSERT(space_info);
ctl->max_chunk_size = READ_ONCE(space_info->chunk_size);
- ctl->max_stripe_size = ctl->max_chunk_size;
+ ctl->max_stripe_size = min_t(u64, ctl->max_chunk_size, SZ_1G);
if (ctl->type & BTRFS_BLOCK_GROUP_SYSTEM)
ctl->devs_max = min_t(int, ctl->devs_max, BTRFS_MAX_DEVS_SYS_CHUNK);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 2128a032c3b7..1702cb7cac00 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -90,13 +90,11 @@ struct btrfs_device {
u64 generation;
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
struct btrfs_zoned_device_info *zone_info;
- /* block device holder for blkdev_get/put */
- void *holder;
-
/*
* Device's major-minor number. Must be set even if the device is not
* opened (bdev == NULL), unless the device is missing.
@@ -629,7 +627,7 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
void btrfs_put_dev_args_from_path(struct btrfs_dev_lookup_args *args);
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, void **holder);
+ struct bdev_handle **bdev_handle);
void __exit btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index 96828a13dd43..a9f8b173a99f 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -442,7 +442,7 @@ static const struct xattr_handler btrfs_btrfs_xattr_handler = {
.set = btrfs_xattr_handler_set_prop,
};
-const struct xattr_handler *btrfs_xattr_handlers[] = {
+const struct xattr_handler * const btrfs_xattr_handlers[] = {
&btrfs_security_xattr_handler,
&btrfs_trusted_xattr_handler,
&btrfs_user_xattr_handler,
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
index 1cd3fc0a8f17..118118ca3e1d 100644
--- a/fs/btrfs/xattr.h
+++ b/fs/btrfs/xattr.h
@@ -8,7 +8,7 @@
#include <linux/xattr.h>
-extern const struct xattr_handler *btrfs_xattr_handlers[];
+extern const struct xattr_handler * const btrfs_xattr_handlers[];
int btrfs_getxattr(struct inode *inode, const char *name,
void *buffer, size_t size);
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-09 15:58:37 +0300