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btrfs: fix spelling of snapshotting 

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-06-22 02:19:11 +02:00
parent e38ae7a086
commit ea14b57fd1
6 changed files with 36 additions and 36 deletions
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6
fs/btrfs/ctree.h
View File

@ -1258,7 +1258,7 @@ struct btrfs_root {
*/
int send_in_progress;
struct btrfs_subvolume_writers *subv_writers;
atomic_t will_be_snapshoted;
atomic_t will_be_snapshotted;
/* For qgroup metadata space reserve */
atomic64_t qgroup_meta_rsv;
@ -2773,8 +2773,8 @@ int btrfs_init_space_info(struct btrfs_fs_info *fs_info);
int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int __get_raid_index(u64 flags);
int btrfs_start_write_no_snapshoting(struct btrfs_root *root);
void btrfs_end_write_no_snapshoting(struct btrfs_root *root);
int btrfs_start_write_no_snapshotting(struct btrfs_root *root);
void btrfs_end_write_no_snapshotting(struct btrfs_root *root);
void btrfs_wait_for_snapshot_creation(struct btrfs_root *root);
void check_system_chunk(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, const u64 type);

2
fs/btrfs/disk-io.c
View File

@ -1343,7 +1343,7 @@ static void __setup_root(struct btrfs_root *root, struct btrfs_fs_info *fs_info,
atomic_set(&root->log_batch, 0);
atomic_set(&root->orphan_inodes, 0);
refcount_set(&root->refs, 1);
atomic_set(&root->will_be_snapshoted, 0);
atomic_set(&root->will_be_snapshotted, 0);
atomic64_set(&root->qgroup_meta_rsv, 0);
root->log_transid = 0;
root->log_transid_committed = -1;

22
fs/btrfs/extent-tree.c
View File

@ -10989,14 +10989,14 @@ int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range)
}
/*
* btrfs_{start,end}_write_no_snapshoting() are similar to
* btrfs_{start,end}_write_no_snapshotting() are similar to
* mnt_{want,drop}_write(), they are used to prevent some tasks from writing
* data into the page cache through nocow before the subvolume is snapshoted,
* but flush the data into disk after the snapshot creation, or to prevent
* operations while snapshoting is ongoing and that cause the snapshot to be
* operations while snapshotting is ongoing and that cause the snapshot to be
* inconsistent (writes followed by expanding truncates for example).
*/
void btrfs_end_write_no_snapshoting(struct btrfs_root *root)
void btrfs_end_write_no_snapshotting(struct btrfs_root *root)
{
percpu_counter_dec(&root->subv_writers->counter);
/*
@ -11007,9 +11007,9 @@ void btrfs_end_write_no_snapshoting(struct btrfs_root *root)
wake_up(&root->subv_writers->wait);
}
int btrfs_start_write_no_snapshoting(struct btrfs_root *root)
int btrfs_start_write_no_snapshotting(struct btrfs_root *root)
{
if (atomic_read(&root->will_be_snapshoted))
if (atomic_read(&root->will_be_snapshotted))
return 0;
percpu_counter_inc(&root->subv_writers->counter);
@ -11017,14 +11017,14 @@ int btrfs_start_write_no_snapshoting(struct btrfs_root *root)
* Make sure counter is updated before we check for snapshot creation.
*/
smp_mb();
if (atomic_read(&root->will_be_snapshoted)) {
btrfs_end_write_no_snapshoting(root);
if (atomic_read(&root->will_be_snapshotted)) {
btrfs_end_write_no_snapshotting(root);
return 0;
}
return 1;
}
static int wait_snapshoting_atomic_t(atomic_t *a)
static int wait_snapshotting_atomic_t(atomic_t *a)
{
schedule();
return 0;
@ -11035,11 +11035,11 @@ void btrfs_wait_for_snapshot_creation(struct btrfs_root *root)
while (true) {
int ret;
ret = btrfs_start_write_no_snapshoting(root);
ret = btrfs_start_write_no_snapshotting(root);
if (ret)
break;
wait_on_atomic_t(&root->will_be_snapshoted,
wait_snapshoting_atomic_t,
wait_on_atomic_t(&root->will_be_snapshotted,
wait_snapshotting_atomic_t,
TASK_UNINTERRUPTIBLE);
}
}

10
fs/btrfs/file.c
View File

@ -1536,7 +1536,7 @@ static noinline int check_can_nocow(struct btrfs_inode *inode, loff_t pos,
u64 num_bytes;
int ret;
ret = btrfs_start_write_no_snapshoting(root);
ret = btrfs_start_write_no_snapshotting(root);
if (!ret)
return -ENOSPC;
@ -1561,7 +1561,7 @@ static noinline int check_can_nocow(struct btrfs_inode *inode, loff_t pos,
NULL, NULL, NULL);
if (ret <= 0) {
ret = 0;
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
} else {
*write_bytes = min_t(size_t, *write_bytes ,
num_bytes - pos + lockstart);
@ -1664,7 +1664,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
data_reserved, pos,
write_bytes);
else
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
break;
}
@ -1767,7 +1767,7 @@ again:
release_bytes = 0;
if (only_release_metadata)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
if (only_release_metadata && copied > 0) {
lockstart = round_down(pos,
@ -1797,7 +1797,7 @@ again:
if (release_bytes) {
if (only_release_metadata) {
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
btrfs_delalloc_release_metadata(BTRFS_I(inode),
release_bytes);
} else {

22
fs/btrfs/inode.c
View File

@ -1381,7 +1381,7 @@ next_slot:
* we fall into common COW way.
*/
if (!nolock) {
err = btrfs_start_write_no_snapshoting(root);
err = btrfs_start_write_no_snapshotting(root);
if (!err)
goto out_check;
}
@ -1393,12 +1393,12 @@ next_slot:
if (csum_exist_in_range(fs_info, disk_bytenr,
num_bytes)) {
if (!nolock)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
goto out_check;
}
if (!btrfs_inc_nocow_writers(fs_info, disk_bytenr)) {
if (!nolock)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
goto out_check;
}
nocow = 1;
@ -1415,7 +1415,7 @@ out_check:
if (extent_end <= start) {
path->slots[0]++;
if (!nolock && nocow)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
if (nocow)
btrfs_dec_nocow_writers(fs_info, disk_bytenr);
goto next_slot;
@ -1438,7 +1438,7 @@ out_check:
NULL);
if (ret) {
if (!nolock && nocow)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
if (nocow)
btrfs_dec_nocow_writers(fs_info,
disk_bytenr);
@ -1459,7 +1459,7 @@ out_check:
BTRFS_ORDERED_PREALLOC);
if (IS_ERR(em)) {
if (!nolock && nocow)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
if (nocow)
btrfs_dec_nocow_writers(fs_info,
disk_bytenr);
@ -1499,7 +1499,7 @@ out_check:
PAGE_UNLOCK | PAGE_SET_PRIVATE2);
if (!nolock && nocow)
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
cur_offset = extent_end;
/*
@ -5053,7 +5053,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
if (newsize > oldsize) {
/*
* Don't do an expanding truncate while snapshoting is ongoing.
* Don't do an expanding truncate while snapshotting is ongoing.
* This is to ensure the snapshot captures a fully consistent
* state of this file - if the snapshot captures this expanding
* truncation, it must capture all writes that happened before
@ -5062,13 +5062,13 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
btrfs_wait_for_snapshot_creation(root);
ret = btrfs_cont_expand(inode, oldsize, newsize);
if (ret) {
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
return ret;
}
trans = btrfs_start_transaction(root, 1);
if (IS_ERR(trans)) {
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
return PTR_ERR(trans);
}
@ -5076,7 +5076,7 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
btrfs_ordered_update_i_size(inode, i_size_read(inode), NULL);
pagecache_isize_extended(inode, oldsize, newsize);
ret = btrfs_update_inode(trans, root, inode);
btrfs_end_write_no_snapshoting(root);
btrfs_end_write_no_snapshotting(root);
btrfs_end_transaction(trans);
} else {

10
fs/btrfs/ioctl.c
View File

@ -607,7 +607,7 @@ fail_free:
return ret;
}
static void btrfs_wait_for_no_snapshoting_writes(struct btrfs_root *root)
static void btrfs_wait_for_no_snapshotting_writes(struct btrfs_root *root)
{
s64 writers;
DEFINE_WAIT(wait);
@ -650,9 +650,9 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir,
goto free_pending;
}
atomic_inc(&root->will_be_snapshoted);
atomic_inc(&root->will_be_snapshotted);
smp_mb__after_atomic();
btrfs_wait_for_no_snapshoting_writes(root);
btrfs_wait_for_no_snapshotting_writes(root);
ret = btrfs_start_delalloc_inodes(root, 0);
if (ret)
@ -723,8 +723,8 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir,
fail:
btrfs_subvolume_release_metadata(fs_info, &pending_snapshot->block_rsv);
dec_and_free:
if (atomic_dec_and_test(&root->will_be_snapshoted))
wake_up_atomic_t(&root->will_be_snapshoted);
if (atomic_dec_and_test(&root->will_be_snapshotted))
wake_up_atomic_t(&root->will_be_snapshotted);
free_pending:
kfree(pending_snapshot->root_item);
btrfs_free_path(pending_snapshot->path);