#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"
* change at any time if we discover bad compression ratios.
*/
if (!(BTRFS_I(inode)->flags & BTRFS_INODE_NOCOMPRESS) &&
- btrfs_test_opt(root, COMPRESS)) {
+ (btrfs_test_opt(root, COMPRESS) ||
+ (BTRFS_I(inode)->force_compress))) {
WARN_ON(pages);
pages = kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS);
nr_pages_ret = 0;
/* flag the file so we don't compress in the future */
- if (!btrfs_test_opt(root, FORCE_COMPRESS))
+ if (!btrfs_test_opt(root, FORCE_COMPRESS) &&
+ !(BTRFS_I(inode)->force_compress)) {
BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
+ }
}
if (will_compress) {
*num_added += 1;
unsigned long nr_written = 0;
lock_extent(io_tree, async_extent->start,
- async_extent->start +
- async_extent->ram_size - 1, GFP_NOFS);
+ async_extent->start +
+ async_extent->ram_size - 1, GFP_NOFS);
/* allocate blocks */
ret = cow_file_range(inode, async_cow->locked_page,
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);
else if (BTRFS_I(inode)->flags & BTRFS_INODE_PREALLOC)
ret = run_delalloc_nocow(inode, locked_page, start, end,
page_started, 0, nr_written);
- else if (!btrfs_test_opt(root, COMPRESS))
+ else if (!btrfs_test_opt(root, COMPRESS) &&
+ !(BTRFS_I(inode)->force_compress))
ret = cow_file_range(inode, locked_page, start, end,
page_started, nr_written, 1);
else
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);
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);
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;
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);
return 0;
}
-int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end)
+int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
+ struct extent_state **cached_state)
{
if ((end & (PAGE_CACHE_SIZE - 1)) == 0)
WARN_ON(1);
return set_extent_delalloc(&BTRFS_I(inode)->io_tree, start, end,
- GFP_NOFS);
+ cached_state, GFP_NOFS);
}
/* see btrfs_writepage_start_hook for details on why this is required */
{
struct btrfs_writepage_fixup *fixup;
struct btrfs_ordered_extent *ordered;
+ struct extent_state *cached_state = NULL;
struct page *page;
struct inode *inode;
u64 page_start;
page_start = page_offset(page);
page_end = page_offset(page) + PAGE_CACHE_SIZE - 1;
- lock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end, GFP_NOFS);
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end, 0,
+ &cached_state, GFP_NOFS);
/* already ordered? We're done */
if (PagePrivate2(page))
ordered = btrfs_lookup_ordered_extent(inode, page_start);
if (ordered) {
- unlock_extent(&BTRFS_I(inode)->io_tree, page_start,
- page_end, GFP_NOFS);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, page_start,
+ page_end, &cached_state, GFP_NOFS);
unlock_page(page);
btrfs_start_ordered_extent(inode, ordered, 1);
goto again;
}
- btrfs_set_extent_delalloc(inode, page_start, page_end);
+ btrfs_set_extent_delalloc(inode, page_start, page_end, &cached_state);
ClearPageChecked(page);
out:
- unlock_extent(&BTRFS_I(inode)->io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, page_start, page_end,
+ &cached_state, GFP_NOFS);
out_page:
unlock_page(page);
page_cache_release(page);
struct btrfs_trans_handle *trans;
struct btrfs_ordered_extent *ordered_extent = NULL;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
+ struct extent_state *cached_state = NULL;
int compressed = 0;
int ret;
- ret = btrfs_dec_test_ordered_pending(inode, start, end - start + 1);
+ ret = btrfs_dec_test_ordered_pending(inode, &ordered_extent, start,
+ end - start + 1);
if (!ret)
return 0;
-
- ordered_extent = btrfs_lookup_ordered_extent(inode, start);
BUG_ON(!ordered_extent);
if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) {
goto out;
}
- lock_extent(io_tree, ordered_extent->file_offset,
- ordered_extent->file_offset + ordered_extent->len - 1,
- GFP_NOFS);
+ lock_extent_bits(io_tree, ordered_extent->file_offset,
+ ordered_extent->file_offset + ordered_extent->len - 1,
+ 0, &cached_state, GFP_NOFS);
trans = btrfs_join_transaction(root, 1);
ordered_extent->len);
BUG_ON(ret);
}
- unlock_extent(io_tree, ordered_extent->file_offset,
- ordered_extent->file_offset + ordered_extent->len - 1,
- GFP_NOFS);
+ unlock_extent_cached(io_tree, ordered_extent->file_offset,
+ ordered_extent->file_offset +
+ ordered_extent->len - 1, &cached_state, GFP_NOFS);
+
add_pending_csums(trans, inode, ordered_extent->file_offset,
&ordered_extent->list);
found_key.objectid = found_key.offset;
found_key.type = BTRFS_INODE_ITEM_KEY;
found_key.offset = 0;
- inode = btrfs_iget(root->fs_info->sb, &found_key, root);
+ inode = btrfs_iget(root->fs_info->sb, &found_key, root, NULL);
if (IS_ERR(inode))
break;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
struct btrfs_ordered_extent *ordered;
+ struct extent_state *cached_state = NULL;
char *kaddr;
u32 blocksize = root->sectorsize;
pgoff_t index = from >> PAGE_CACHE_SHIFT;
}
wait_on_page_writeback(page);
- lock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ lock_extent_bits(io_tree, page_start, page_end, 0, &cached_state,
+ GFP_NOFS);
set_page_extent_mapped(page);
ordered = btrfs_lookup_ordered_extent(inode, page_start);
if (ordered) {
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end,
+ &cached_state, GFP_NOFS);
unlock_page(page);
page_cache_release(page);
btrfs_start_ordered_extent(inode, ordered, 1);
goto again;
}
- clear_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end,
+ clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start, page_end,
EXTENT_DIRTY | EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING,
- GFP_NOFS);
+ 0, 0, &cached_state, GFP_NOFS);
- ret = btrfs_set_extent_delalloc(inode, page_start, page_end);
+ ret = btrfs_set_extent_delalloc(inode, page_start, page_end,
+ &cached_state);
if (ret) {
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end,
+ &cached_state, GFP_NOFS);
goto out_unlock;
}
}
ClearPageChecked(page);
set_page_dirty(page);
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end, &cached_state,
+ GFP_NOFS);
out_unlock:
if (ret)
struct btrfs_root *root = BTRFS_I(inode)->root;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
struct extent_map *em;
+ struct extent_state *cached_state = NULL;
u64 mask = root->sectorsize - 1;
u64 hole_start = (inode->i_size + mask) & ~mask;
u64 block_end = (size + mask) & ~mask;
struct btrfs_ordered_extent *ordered;
btrfs_wait_ordered_range(inode, hole_start,
block_end - hole_start);
- lock_extent(io_tree, hole_start, block_end - 1, GFP_NOFS);
+ lock_extent_bits(io_tree, hole_start, block_end - 1, 0,
+ &cached_state, GFP_NOFS);
ordered = btrfs_lookup_ordered_extent(inode, hole_start);
if (!ordered)
break;
- unlock_extent(io_tree, hole_start, block_end - 1, GFP_NOFS);
+ unlock_extent_cached(io_tree, hole_start, block_end - 1,
+ &cached_state, GFP_NOFS);
btrfs_put_ordered_extent(ordered);
}
break;
}
- unlock_extent(io_tree, hole_start, block_end - 1, GFP_NOFS);
+ unlock_extent_cached(io_tree, hole_start, block_end - 1, &cached_state,
+ GFP_NOFS);
return err;
}
bi->index_cnt = (u64)-1;
bi->last_unlink_trans = 0;
bi->ordered_data_close = 0;
+ bi->force_compress = 0;
extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
extent_io_tree_init(&BTRFS_I(inode)->io_tree,
inode->i_mapping, GFP_NOFS);
* Returns in *is_new if the inode was read from disk
*/
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
- struct btrfs_root *root)
+ struct btrfs_root *root, int *new)
{
struct inode *inode;
inode_tree_add(inode);
unlock_new_inode(inode);
+ if (new)
+ *new = 1;
}
return inode;
return NULL;
if (location.type == BTRFS_INODE_ITEM_KEY) {
- inode = btrfs_iget(dir->i_sb, &location, root);
+ inode = btrfs_iget(dir->i_sb, &location, root, NULL);
return inode;
}
else
inode = new_simple_dir(dir->i_sb, &location, sub_root);
} else {
- inode = btrfs_iget(dir->i_sb, &location, sub_root);
+ inode = btrfs_iget(dir->i_sb, &location, sub_root, NULL);
}
srcu_read_unlock(&root->fs_info->subvol_srcu, index);
if (ret != 0)
goto fail;
- inode->i_uid = current_fsuid();
-
- if (dir && (dir->i_mode & S_ISGID)) {
- inode->i_gid = dir->i_gid;
- if (S_ISDIR(mode))
- mode |= S_ISGID;
- } else
- inode->i_gid = current_fsgid();
-
- inode->i_mode = mode;
+ inode_init_owner(inode, dir, mode);
inode->i_ino = objectid;
inode_set_bytes(inode, 0);
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
err = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
if (err) {
err = -ENOSPC;
- goto out_unlock;
+ goto out_fail;
}
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
{
struct extent_io_tree *tree;
struct btrfs_ordered_extent *ordered;
+ struct extent_state *cached_state = NULL;
u64 page_start = page_offset(page);
u64 page_end = page_start + PAGE_CACHE_SIZE - 1;
btrfs_releasepage(page, GFP_NOFS);
return;
}
- lock_extent(tree, page_start, page_end, GFP_NOFS);
+ lock_extent_bits(tree, page_start, page_end, 0, &cached_state,
+ GFP_NOFS);
ordered = btrfs_lookup_ordered_extent(page->mapping->host,
page_offset(page));
if (ordered) {
clear_extent_bit(tree, page_start, page_end,
EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_LOCKED | EXTENT_DO_ACCOUNTING, 1, 0,
- NULL, GFP_NOFS);
+ &cached_state, GFP_NOFS);
/*
* whoever cleared the private bit is responsible
* for the finish_ordered_io
page_start, page_end);
}
btrfs_put_ordered_extent(ordered);
- lock_extent(tree, page_start, page_end, GFP_NOFS);
+ cached_state = NULL;
+ lock_extent_bits(tree, page_start, page_end, 0, &cached_state,
+ GFP_NOFS);
}
clear_extent_bit(tree, page_start, page_end,
EXTENT_LOCKED | EXTENT_DIRTY | EXTENT_DELALLOC |
- EXTENT_DO_ACCOUNTING, 1, 1, NULL, GFP_NOFS);
+ EXTENT_DO_ACCOUNTING, 1, 1, &cached_state, GFP_NOFS);
__btrfs_releasepage(page, GFP_NOFS);
ClearPageChecked(page);
struct btrfs_root *root = BTRFS_I(inode)->root;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
struct btrfs_ordered_extent *ordered;
+ struct extent_state *cached_state = NULL;
char *kaddr;
unsigned long zero_start;
loff_t size;
}
wait_on_page_writeback(page);
- lock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ lock_extent_bits(io_tree, page_start, page_end, 0, &cached_state,
+ GFP_NOFS);
set_page_extent_mapped(page);
/*
*/
ordered = btrfs_lookup_ordered_extent(inode, page_start);
if (ordered) {
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end,
+ &cached_state, GFP_NOFS);
unlock_page(page);
btrfs_start_ordered_extent(inode, ordered, 1);
btrfs_put_ordered_extent(ordered);
* is probably a better way to do this, but for now keep consistent with
* prepare_pages in the normal write path.
*/
- clear_extent_bits(&BTRFS_I(inode)->io_tree, page_start, page_end,
+ clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start, page_end,
EXTENT_DIRTY | EXTENT_DELALLOC | EXTENT_DO_ACCOUNTING,
- GFP_NOFS);
+ 0, 0, &cached_state, GFP_NOFS);
- ret = btrfs_set_extent_delalloc(inode, page_start, page_end);
+ ret = btrfs_set_extent_delalloc(inode, page_start, page_end,
+ &cached_state);
if (ret) {
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end,
+ &cached_state, GFP_NOFS);
ret = VM_FAULT_SIGBUS;
btrfs_free_reserved_data_space(root, inode, PAGE_CACHE_SIZE);
goto out_unlock;
BTRFS_I(inode)->last_trans = root->fs_info->generation;
BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid;
- unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
+ unlock_extent_cached(io_tree, page_start, page_end, &cached_state, GFP_NOFS);
out_unlock:
btrfs_unreserve_metadata_for_delalloc(root, inode, 1);
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
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) {
static long btrfs_fallocate(struct inode *inode, int mode,
loff_t offset, loff_t len)
{
+ struct extent_state *cached_state = NULL;
u64 cur_offset;
u64 last_byte;
u64 alloc_start;
/* the extent lock is ordered inside the running
* transaction
*/
- lock_extent(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
- GFP_NOFS);
+ lock_extent_bits(&BTRFS_I(inode)->io_tree, alloc_start,
+ locked_end, 0, &cached_state, GFP_NOFS);
ordered = btrfs_lookup_first_ordered_extent(inode,
alloc_end - 1);
if (ordered &&
ordered->file_offset + ordered->len > alloc_start &&
ordered->file_offset < alloc_end) {
btrfs_put_ordered_extent(ordered);
- unlock_extent(&BTRFS_I(inode)->io_tree,
- alloc_start, locked_end, GFP_NOFS);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree,
+ alloc_start, locked_end,
+ &cached_state, GFP_NOFS);
/*
* we can't wait on the range with the transaction
* running or with the extent lock held
break;
}
}
- unlock_extent(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
- GFP_NOFS);
+ unlock_extent_cached(&BTRFS_I(inode)->io_tree, alloc_start, locked_end,
+ &cached_state, GFP_NOFS);
btrfs_free_reserved_data_space(BTRFS_I(inode)->root, inode,
alloc_end - alloc_start);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff