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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix meta data raid-repair merge problem
  Btrfs: skip allocation attempt from empty cluster
  Btrfs: skip block groups without enough space for a cluster
  Btrfs: start search for new cluster at the beginning
  Btrfs: reset cluster's max_size when creating bitmap
  Btrfs: initialize new bitmaps' list
  Btrfs: fix oops when calling statfs on readonly device
  Btrfs: Don't error on resizing FS to same size
  Btrfs: fix deadlock on metadata reservation when evicting a inode
  Fix URL of btrfs-progs git repository in docs
  btrfs scrub: handle -ENOMEM from init_ipath()
This commit is contained in:
Linus Torvalds 2011-12-01 08:28:53 -08:00
parent 11d814a201 f4a8e6563e
commit b930c26416
9 changed files with 60 additions and 25 deletions
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4
Documentation/filesystems/btrfs.txt
View File

@ -63,8 +63,8 @@ IRC network.
Userspace tools for creating and manipulating Btrfs file systems are
available from the git repository at the following location:
http://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs-unstable.git
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs-unstable.git
http://git.kernel.org/?p=linux/kernel/git/mason/btrfs-progs.git
git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git
These include the following tools:

3
fs/btrfs/ctree.h
View File

@ -2369,6 +2369,9 @@ int btrfs_block_rsv_check(struct btrfs_root *root,
int btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved);
int btrfs_block_rsv_refill_noflush(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved);
int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
struct btrfs_block_rsv *dst_rsv,
u64 num_bytes);

34
fs/btrfs/extent-tree.c
View File

@ -3888,9 +3888,9 @@ int btrfs_block_rsv_check(struct btrfs_root *root,
return ret;
}
int btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved)
static inline int __btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved, int flush)
{
u64 num_bytes = 0;
int ret = -ENOSPC;
@ -3909,7 +3909,7 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
if (!ret)
return 0;
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, 1);
ret = reserve_metadata_bytes(root, block_rsv, num_bytes, flush);
if (!ret) {
block_rsv_add_bytes(block_rsv, num_bytes, 0);
return 0;
@ -3918,6 +3918,20 @@ int btrfs_block_rsv_refill(struct btrfs_root *root,
return ret;
}
int btrfs_block_rsv_refill(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved)
{
return __btrfs_block_rsv_refill(root, block_rsv, min_reserved, 1);
}
int btrfs_block_rsv_refill_noflush(struct btrfs_root *root,
struct btrfs_block_rsv *block_rsv,
u64 min_reserved)
{
return __btrfs_block_rsv_refill(root, block_rsv, min_reserved, 0);
}
int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv,
struct btrfs_block_rsv *dst_rsv,
u64 num_bytes)
@ -5265,7 +5279,7 @@ alloc:
spin_lock(&block_group->free_space_ctl->tree_lock);
if (cached &&
block_group->free_space_ctl->free_space <
num_bytes + empty_size) {
num_bytes + empty_cluster + empty_size) {
spin_unlock(&block_group->free_space_ctl->tree_lock);
goto loop;
}
@ -5286,12 +5300,10 @@ alloc:
* people trying to start a new cluster
*/
spin_lock(&last_ptr->refill_lock);
if (last_ptr->block_group &&
(last_ptr->block_group->ro ||
!block_group_bits(last_ptr->block_group, data))) {
offset = 0;
if (!last_ptr->block_group ||
last_ptr->block_group->ro ||
!block_group_bits(last_ptr->block_group, data))
goto refill_cluster;
}
offset = btrfs_alloc_from_cluster(block_group, last_ptr,
num_bytes, search_start);
@ -5342,7 +5354,7 @@ refill_cluster:
/* allocate a cluster in this block group */
ret = btrfs_find_space_cluster(trans, root,
block_group, last_ptr,
offset, num_bytes,
search_start, num_bytes,
empty_cluster + empty_size);
if (ret == 0) {
/*

27
fs/btrfs/extent_io.c
View File

@ -2287,14 +2287,20 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
if (!uptodate) {
int failed_mirror;
failed_mirror = (int)(unsigned long)bio->bi_bdev;
if (tree->ops && tree->ops->readpage_io_failed_hook)
ret = tree->ops->readpage_io_failed_hook(
bio, page, start, end,
failed_mirror, state);
else
ret = bio_readpage_error(bio, page, start, end,
failed_mirror, NULL);
/*
* The generic bio_readpage_error handles errors the
* following way: If possible, new read requests are
* created and submitted and will end up in
* end_bio_extent_readpage as well (if we're lucky, not
* in the !uptodate case). In that case it returns 0 and
* we just go on with the next page in our bio. If it
* can't handle the error it will return -EIO and we
* remain responsible for that page.
*/
ret = bio_readpage_error(bio, page, start, end,
failed_mirror, NULL);
if (ret == 0) {
error_handled:
uptodate =
test_bit(BIO_UPTODATE, &bio->bi_flags);
if (err)
@ -2302,6 +2308,13 @@ static void end_bio_extent_readpage(struct bio *bio, int err)
uncache_state(&cached);
continue;
}
if (tree->ops && tree->ops->readpage_io_failed_hook) {
ret = tree->ops->readpage_io_failed_hook(
bio, page, start, end,
failed_mirror, state);
if (ret == 0)
goto error_handled;
}
}
if (uptodate) {

2
fs/btrfs/free-space-cache.c
View File

@ -1470,6 +1470,7 @@ static void add_new_bitmap(struct btrfs_free_space_ctl *ctl,
{
info->offset = offset_to_bitmap(ctl, offset);
info->bytes = 0;
INIT_LIST_HEAD(&info->list);
link_free_space(ctl, info);
ctl->total_bitmaps++;
@ -2319,6 +2320,7 @@ again:
if (!found) {
start = i;
cluster->max_size = 0;
found = true;
}

2
fs/btrfs/inode.c
View File

@ -3490,7 +3490,7 @@ void btrfs_evict_inode(struct inode *inode)
* doing the truncate.
*/
while (1) {
ret = btrfs_block_rsv_refill(root, rsv, min_size);
ret = btrfs_block_rsv_refill_noflush(root, rsv, min_size);
/*
* Try and steal from the global reserve since we will

2
fs/btrfs/ioctl.c
View File

@ -1278,7 +1278,7 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
}
ret = btrfs_grow_device(trans, device, new_size);
btrfs_commit_transaction(trans, root);
} else {
} else if (new_size < old_size) {
ret = btrfs_shrink_device(device, new_size);
}

5
fs/btrfs/scrub.c
View File

@ -256,6 +256,11 @@ static int scrub_print_warning_inode(u64 inum, u64 offset, u64 root, void *ctx)
btrfs_release_path(swarn->path);
ipath = init_ipath(4096, local_root, swarn->path);
if (IS_ERR(ipath)) {
ret = PTR_ERR(ipath);
ipath = NULL;
goto err;
}
ret = paths_from_inode(inum, ipath);
if (ret < 0)

6
fs/btrfs/super.c
View File

@ -1057,7 +1057,7 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
int i = 0, nr_devices;
int ret;
nr_devices = fs_info->fs_devices->rw_devices;
nr_devices = fs_info->fs_devices->open_devices;
BUG_ON(!nr_devices);
devices_info = kmalloc(sizeof(*devices_info) * nr_devices,
@ -1079,8 +1079,8 @@ static int btrfs_calc_avail_data_space(struct btrfs_root *root, u64 *free_bytes)
else
min_stripe_size = BTRFS_STRIPE_LEN;
list_for_each_entry(device, &fs_devices->alloc_list, dev_alloc_list) {
if (!device->in_fs_metadata)
list_for_each_entry(device, &fs_devices->devices, dev_list) {
if (!device->in_fs_metadata || !device->bdev)
continue;
avail_space = device->total_bytes - device->bytes_used;