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

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (31 commits)
  Btrfs: don't call writepages from within write_full_page
  Btrfs: Remove unused variable 'last_index' in file.c
  Btrfs: clean up for find_first_extent_bit()
  Btrfs: clean up for wait_extent_bit()
  Btrfs: clean up for insert_state()
  Btrfs: remove unused members from struct extent_state
  Btrfs: clean up code for merging extent maps
  Btrfs: clean up code for extent_map lookup
  Btrfs: clean up search_extent_mapping()
  Btrfs: remove redundant code for dir item lookup
  Btrfs: make acl functions really no-op if acl is not enabled
  Btrfs: remove remaining ref-cache code
  Btrfs: remove a BUG_ON() in btrfs_commit_transaction()
  Btrfs: use wait_event()
  Btrfs: check the nodatasum flag when writing compressed files
  Btrfs: copy string correctly in INO_LOOKUP ioctl
  Btrfs: don't print the leaf if we had an error
  btrfs: make btrfs_set_root_node void
  Btrfs: fix oops while writing data to SSD partitions
  Btrfs: Protect the readonly flag of block group
  ...

Fix up trivial conflicts (due to acl and writeback cleanups) in
 - fs/btrfs/acl.c
 - fs/btrfs/ctree.h
 - fs/btrfs/extent_io.c
This commit is contained in:
Linus Torvalds
2011-08-02 21:14:05 -10:00
parent a6b11f5338 0d10ee2e6d
commit ed8f37370d
19 changed files with 270 additions and 529 deletions
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139
fs/btrfs/extent_io.c
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@@ -254,14 +254,14 @@ static void merge_cb(struct extent_io_tree *tree, struct extent_state *new,
*
* This should be called with the tree lock held.
*/
static int merge_state(struct extent_io_tree *tree,
struct extent_state *state)
static void merge_state(struct extent_io_tree *tree,
struct extent_state *state)
{
struct extent_state *other;
struct rb_node *other_node;
if (state->state & (EXTENT_IOBITS | EXTENT_BOUNDARY))
return 0;
return;
other_node = rb_prev(&state->rb_node);
if (other_node) {
@@ -287,19 +287,13 @@ static int merge_state(struct extent_io_tree *tree,
free_extent_state(other);
}
}
return 0;
}
static int set_state_cb(struct extent_io_tree *tree,
static void set_state_cb(struct extent_io_tree *tree,
struct extent_state *state, int *bits)
{
if (tree->ops && tree->ops->set_bit_hook) {
return tree->ops->set_bit_hook(tree->mapping->host,
state, bits);
}
return 0;
if (tree->ops && tree->ops->set_bit_hook)
tree->ops->set_bit_hook(tree->mapping->host, state, bits);
}
static void clear_state_cb(struct extent_io_tree *tree,
@@ -309,6 +303,9 @@ static void clear_state_cb(struct extent_io_tree *tree,
tree->ops->clear_bit_hook(tree->mapping->host, state, bits);
}
static void set_state_bits(struct extent_io_tree *tree,
struct extent_state *state, int *bits);
/*
* insert an extent_state struct into the tree. 'bits' are set on the
* struct before it is inserted.
@@ -324,8 +321,6 @@ static int insert_state(struct extent_io_tree *tree,
int *bits)
{
struct rb_node *node;
int bits_to_set = *bits & ~EXTENT_CTLBITS;
int ret;
if (end < start) {
printk(KERN_ERR "btrfs end < start %llu %llu\n",
@@ -335,13 +330,9 @@ static int insert_state(struct extent_io_tree *tree,
}
state->start = start;
state->end = end;
ret = set_state_cb(tree, state, bits);
if (ret)
return ret;
if (bits_to_set & EXTENT_DIRTY)
tree->dirty_bytes += end - start + 1;
state->state |= bits_to_set;
set_state_bits(tree, state, bits);
node = tree_insert(&tree->state, end, &state->rb_node);
if (node) {
struct extent_state *found;
@@ -357,13 +348,11 @@ static int insert_state(struct extent_io_tree *tree,
return 0;
}
static int split_cb(struct extent_io_tree *tree, struct extent_state *orig,
static void split_cb(struct extent_io_tree *tree, struct extent_state *orig,
u64 split)
{
if (tree->ops && tree->ops->split_extent_hook)
return tree->ops->split_extent_hook(tree->mapping->host,
orig, split);
return 0;
tree->ops->split_extent_hook(tree->mapping->host, orig, split);
}
/*
@@ -659,34 +648,25 @@ again:
if (start > end)
break;
if (need_resched()) {
spin_unlock(&tree->lock);
cond_resched();
spin_lock(&tree->lock);
}
cond_resched_lock(&tree->lock);
}
out:
spin_unlock(&tree->lock);
return 0;
}
static int set_state_bits(struct extent_io_tree *tree,
static void set_state_bits(struct extent_io_tree *tree,
struct extent_state *state,
int *bits)
{
int ret;
int bits_to_set = *bits & ~EXTENT_CTLBITS;
ret = set_state_cb(tree, state, bits);
if (ret)
return ret;
set_state_cb(tree, state, bits);
if ((bits_to_set & EXTENT_DIRTY) && !(state->state & EXTENT_DIRTY)) {
u64 range = state->end - state->start + 1;
tree->dirty_bytes += range;
}
state->state |= bits_to_set;
return 0;
}
static void cache_state(struct extent_state *state,
@@ -779,9 +759,7 @@ hit_next:
goto out;
}
err = set_state_bits(tree, state, &bits);
if (err)
goto out;
set_state_bits(tree, state, &bits);
cache_state(state, cached_state);
merge_state(tree, state);
@@ -830,9 +808,7 @@ hit_next:
if (err)
goto out;
if (state->end <= end) {
err = set_state_bits(tree, state, &bits);
if (err)
goto out;
set_state_bits(tree, state, &bits);
cache_state(state, cached_state);
merge_state(tree, state);
if (last_end == (u64)-1)
@@ -893,11 +869,7 @@ hit_next:
err = split_state(tree, state, prealloc, end + 1);
BUG_ON(err == -EEXIST);
err = set_state_bits(tree, prealloc, &bits);
if (err) {
prealloc = NULL;
goto out;
}
set_state_bits(tree, prealloc, &bits);
cache_state(prealloc, cached_state);
merge_state(tree, prealloc);
prealloc = NULL;
@@ -1059,46 +1031,6 @@ static int set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end)
return 0;
}
/*
* find the first offset in the io tree with 'bits' set. zero is
* returned if we find something, and *start_ret and *end_ret are
* set to reflect the state struct that was found.
*
* If nothing was found, 1 is returned, < 0 on error
*/
int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, int bits)
{
struct rb_node *node;
struct extent_state *state;
int ret = 1;
spin_lock(&tree->lock);
/*
* this search will find all the extents that end after
* our range starts.
*/
node = tree_search(tree, start);
if (!node)
goto out;
while (1) {
state = rb_entry(node, struct extent_state, rb_node);
if (state->end >= start && (state->state & bits)) {
*start_ret = state->start;
*end_ret = state->end;
ret = 0;
break;
}
node = rb_next(node);
if (!node)
break;
}
out:
spin_unlock(&tree->lock);
return ret;
}
/* find the first state struct with 'bits' set after 'start', and
* return it. tree->lock must be held. NULL will returned if
* nothing was found after 'start'
@@ -1130,6 +1062,30 @@ out:
return NULL;
}
/*
* find the first offset in the io tree with 'bits' set. zero is
* returned if we find something, and *start_ret and *end_ret are
* set to reflect the state struct that was found.
*
* If nothing was found, 1 is returned, < 0 on error
*/
int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, int bits)
{
struct extent_state *state;
int ret = 1;
spin_lock(&tree->lock);
state = find_first_extent_bit_state(tree, start, bits);
if (state) {
*start_ret = state->start;
*end_ret = state->end;
ret = 0;
}
spin_unlock(&tree->lock);
return ret;
}
/*
* find a contiguous range of bytes in the file marked as delalloc, not
* more than 'max_bytes'. start and end are used to return the range,
@@ -2546,7 +2502,6 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
struct writeback_control *wbc)
{
int ret;
struct address_space *mapping = page->mapping;
struct extent_page_data epd = {
.bio = NULL,
.tree = tree,
@@ -2554,17 +2509,9 @@ int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
.extent_locked = 0,
.sync_io = wbc->sync_mode == WB_SYNC_ALL,
};
struct writeback_control wbc_writepages = {
.sync_mode = wbc->sync_mode,
.nr_to_write = 64,
.range_start = page_offset(page) + PAGE_CACHE_SIZE,
.range_end = (loff_t)-1,
};
ret = __extent_writepage(page, wbc, &epd);
extent_write_cache_pages(tree, mapping, &wbc_writepages,
__extent_writepage, &epd, flush_write_bio);
flush_epd_write_bio(&epd);
return ret;
}