diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 60 |
1 files changed, 5 insertions, 55 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 02bb099..2bfdc64 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -36,6 +36,7 @@ #include <linux/xattr.h> #include <linux/posix_acl.h> #include <linux/falloc.h> +#include <linux/slab.h> #include "compat.h" #include "ctree.h" #include "disk-io.h" @@ -796,7 +797,7 @@ static noinline int cow_file_range(struct inode *inode, while (disk_num_bytes > 0) { unsigned long op; - cur_alloc_size = min(disk_num_bytes, root->fs_info->max_extent); + cur_alloc_size = disk_num_bytes; ret = btrfs_reserve_extent(trans, root, cur_alloc_size, root->sectorsize, 0, alloc_hint, (u64)-1, &ins, 1); @@ -1227,30 +1228,9 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page, static int btrfs_split_extent_hook(struct inode *inode, struct extent_state *orig, u64 split) { - struct btrfs_root *root = BTRFS_I(inode)->root; - u64 size; - if (!(orig->state & EXTENT_DELALLOC)) return 0; - size = orig->end - orig->start + 1; - if (size > root->fs_info->max_extent) { - u64 num_extents; - u64 new_size; - - new_size = orig->end - split + 1; - num_extents = div64_u64(size + root->fs_info->max_extent - 1, - root->fs_info->max_extent); - - /* - * if we break a large extent up then leave oustanding_extents - * be, since we've already accounted for the large extent. - */ - if (div64_u64(new_size + root->fs_info->max_extent - 1, - root->fs_info->max_extent) < num_extents) - return 0; - } - spin_lock(&BTRFS_I(inode)->accounting_lock); BTRFS_I(inode)->outstanding_extents++; spin_unlock(&BTRFS_I(inode)->accounting_lock); @@ -1268,38 +1248,10 @@ static int btrfs_merge_extent_hook(struct inode *inode, struct extent_state *new, struct extent_state *other) { - struct btrfs_root *root = BTRFS_I(inode)->root; - u64 new_size, old_size; - u64 num_extents; - /* not delalloc, ignore it */ if (!(other->state & EXTENT_DELALLOC)) return 0; - old_size = other->end - other->start + 1; - if (new->start < other->start) - new_size = other->end - new->start + 1; - else - new_size = new->end - other->start + 1; - - /* we're not bigger than the max, unreserve the space and go */ - if (new_size <= root->fs_info->max_extent) { - spin_lock(&BTRFS_I(inode)->accounting_lock); - BTRFS_I(inode)->outstanding_extents--; - spin_unlock(&BTRFS_I(inode)->accounting_lock); - return 0; - } - - /* - * If we grew by another max_extent, just return, we want to keep that - * reserved amount. - */ - num_extents = div64_u64(old_size + root->fs_info->max_extent - 1, - root->fs_info->max_extent); - if (div64_u64(new_size + root->fs_info->max_extent - 1, - root->fs_info->max_extent) > num_extents) - return 0; - spin_lock(&BTRFS_I(inode)->accounting_lock); BTRFS_I(inode)->outstanding_extents--; spin_unlock(&BTRFS_I(inode)->accounting_lock); @@ -1328,6 +1280,7 @@ static int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end, BTRFS_I(inode)->outstanding_extents++; spin_unlock(&BTRFS_I(inode)->accounting_lock); btrfs_delalloc_reserve_space(root, inode, end - start + 1); + spin_lock(&root->fs_info->delalloc_lock); BTRFS_I(inode)->delalloc_bytes += end - start + 1; root->fs_info->delalloc_bytes += end - start + 1; @@ -1356,6 +1309,7 @@ static int btrfs_clear_bit_hook(struct inode *inode, if (bits & EXTENT_DO_ACCOUNTING) { spin_lock(&BTRFS_I(inode)->accounting_lock); + WARN_ON(!BTRFS_I(inode)->outstanding_extents); BTRFS_I(inode)->outstanding_extents--; spin_unlock(&BTRFS_I(inode)->accounting_lock); btrfs_unreserve_metadata_for_delalloc(root, inode, 1); @@ -5384,7 +5338,6 @@ free: void btrfs_drop_inode(struct inode *inode) { struct btrfs_root *root = BTRFS_I(inode)->root; - if (inode->i_nlink > 0 && btrfs_root_refs(&root->root_item) == 0) generic_delete_inode(inode); else @@ -5788,18 +5741,15 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end, struct btrfs_trans_handle *trans; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_key ins; - u64 alloc_size; 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); - trans = btrfs_start_transaction(root, 1); - ret = btrfs_reserve_extent(trans, root, alloc_size, + ret = btrfs_reserve_extent(trans, root, num_bytes, root->sectorsize, 0, alloc_hint, (u64)-1, &ins, 1); if (ret) { |