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Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

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* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: check total number of devices when removing missing
  Btrfs: check return value of open_bdev_exclusive properly
  Btrfs: do not mark the chunk as readonly if in degraded mode
  Btrfs: run orphan cleanup on default fs root
  Btrfs: fix a memory leak in btrfs_init_acl
  Btrfs: Use correct values when updating inode i_size on fallocate
  Btrfs: remove tree_search() in extent_map.c
  Btrfs: Add mount -o compress-force
This commit is contained in:
Linus Torvalds 2010-01-29 10:27:37 -08:00
commit 67f15b06c1
7 changed files with 36 additions and 30 deletions
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1
fs/btrfs/acl.c
View File

@ -244,6 +244,7 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans,
ACL_TYPE_ACCESS);
}
}
posix_acl_release(clone);
}
failed:
posix_acl_release(acl);

1
fs/btrfs/ctree.h
View File

@ -1161,6 +1161,7 @@ struct btrfs_root {
#define BTRFS_MOUNT_SSD_SPREAD (1 << 8)
#define BTRFS_MOUNT_NOSSD (1 << 9)
#define BTRFS_MOUNT_DISCARD (1 << 10)
#define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11)
#define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt)
#define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt)

6
fs/btrfs/disk-io.c
View File

@ -1993,6 +1993,12 @@ struct btrfs_root *open_ctree(struct super_block *sb,
if (!fs_info->fs_root)
goto fail_trans_kthread;
if (!(sb->s_flags & MS_RDONLY)) {
down_read(&fs_info->cleanup_work_sem);
btrfs_orphan_cleanup(fs_info->fs_root);
up_read(&fs_info->cleanup_work_sem);
}
return tree_root;
fail_trans_kthread:

14
fs/btrfs/extent_map.c
View File

@ -155,20 +155,6 @@ static struct rb_node *__tree_search(struct rb_root *root, u64 offset,
return NULL;
}
/*
* look for an offset in the tree, and if it can't be found, return
* the first offset we can find smaller than 'offset'.
*/
static inline struct rb_node *tree_search(struct rb_root *root, u64 offset)
{
struct rb_node *prev;
struct rb_node *ret;
ret = __tree_search(root, offset, &prev, NULL);
if (!ret)
return prev;
return ret;
}
/* check to see if two extent_map structs are adjacent and safe to merge */
static int mergable_maps(struct extent_map *prev, struct extent_map *next)
{

22
fs/btrfs/inode.c
View File

@ -483,7 +483,8 @@ again:
nr_pages_ret = 0;
/* flag the file so we don't compress in the future */
BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
if (!btrfs_test_opt(root, FORCE_COMPRESS))
BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
}
if (will_compress) {
*num_added += 1;
@ -3796,12 +3797,6 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry)
if (location.type == BTRFS_INODE_ITEM_KEY) {
inode = btrfs_iget(dir->i_sb, &location, root);
if (unlikely(root->clean_orphans) &&
!(inode->i_sb->s_flags & MS_RDONLY)) {
down_read(&root->fs_info->cleanup_work_sem);
btrfs_orphan_cleanup(root);
up_read(&root->fs_info->cleanup_work_sem);
}
return inode;
}
@ -5799,7 +5794,7 @@ out_fail:
}
static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
u64 alloc_hint, int mode)
u64 alloc_hint, int mode, loff_t actual_len)
{
struct btrfs_trans_handle *trans;
struct btrfs_root *root = BTRFS_I(inode)->root;
@ -5808,6 +5803,7 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
u64 cur_offset = start;
u64 num_bytes = end - start;
int ret = 0;
u64 i_size;
while (num_bytes > 0) {
alloc_size = min(num_bytes, root->fs_info->max_extent);
@ -5846,8 +5842,12 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
cur_offset > inode->i_size) {
i_size_write(inode, cur_offset);
btrfs_ordered_update_i_size(inode, cur_offset, NULL);
if (cur_offset > actual_len)
i_size = actual_len;
else
i_size = cur_offset;
i_size_write(inode, i_size);
btrfs_ordered_update_i_size(inode, i_size, NULL);
}
ret = btrfs_update_inode(trans, root, inode);
@ -5940,7 +5940,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
ret = prealloc_file_range(inode,
cur_offset, last_byte,
alloc_hint, mode);
alloc_hint, mode, offset+len);
if (ret < 0) {
free_extent_map(em);
break;

9
fs/btrfs/super.c
View File

@ -66,7 +66,8 @@ enum {
Opt_degraded, Opt_subvol, Opt_device, Opt_nodatasum, Opt_nodatacow,
Opt_max_extent, Opt_max_inline, Opt_alloc_start, Opt_nobarrier,
Opt_ssd, Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl,
Opt_compress, Opt_notreelog, Opt_ratio, Opt_flushoncommit,
Opt_compress, Opt_compress_force, Opt_notreelog, Opt_ratio,
Opt_flushoncommit,
Opt_discard, Opt_err,
};
@ -82,6 +83,7 @@ static match_table_t tokens = {
{Opt_alloc_start, "alloc_start=%s"},
{Opt_thread_pool, "thread_pool=%d"},
{Opt_compress, "compress"},
{Opt_compress_force, "compress-force"},
{Opt_ssd, "ssd"},
{Opt_ssd_spread, "ssd_spread"},
{Opt_nossd, "nossd"},
@ -173,6 +175,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
printk(KERN_INFO "btrfs: use compression\n");
btrfs_set_opt(info->mount_opt, COMPRESS);
break;
case Opt_compress_force:
printk(KERN_INFO "btrfs: forcing compression\n");
btrfs_set_opt(info->mount_opt, FORCE_COMPRESS);
btrfs_set_opt(info->mount_opt, COMPRESS);
break;
case Opt_ssd:
printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
btrfs_set_opt(info->mount_opt, SSD);

13
fs/btrfs/volumes.c
View File

@ -1135,7 +1135,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
root->fs_info->avail_metadata_alloc_bits;
if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) &&
root->fs_info->fs_devices->rw_devices <= 4) {
root->fs_info->fs_devices->num_devices <= 4) {
printk(KERN_ERR "btrfs: unable to go below four devices "
"on raid10\n");
ret = -EINVAL;
@ -1143,7 +1143,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
}
if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) &&
root->fs_info->fs_devices->rw_devices <= 2) {
root->fs_info->fs_devices->num_devices <= 2) {
printk(KERN_ERR "btrfs: unable to go below two "
"devices on raid1\n");
ret = -EINVAL;
@ -1434,8 +1434,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
return -EINVAL;
bdev = open_bdev_exclusive(device_path, 0, root->fs_info->bdev_holder);
if (!bdev)
return -EIO;
if (IS_ERR(bdev))
return PTR_ERR(bdev);
if (root->fs_info->fs_devices->seeding) {
seeding_dev = 1;
@ -2538,6 +2538,11 @@ int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
if (!em)
return 1;
if (btrfs_test_opt(root, DEGRADED)) {
free_extent_map(em);
return 0;
}
map = (struct map_lookup *)em->bdev;
for (i = 0; i < map->num_stripes; i++) {
if (!map->stripes[i].dev->writeable) {