Commit 83ebade3 authored by Chris Mason's avatar Chris Mason
parents 74fca6a4 93c82d57
This diff is collapsed.
......@@ -73,6 +73,15 @@ struct btrfs_workers {
/* force completions in the order they were queued */
int ordered;
/* more workers required, but in an interrupt handler */
int atomic_start_pending;
/*
* are we allowed to sleep while starting workers or are we required
* to start them at a later time?
*/
int atomic_worker_start;
/* list with all the work threads. The workers on the idle thread
* may be actively servicing jobs, but they haven't yet hit the
* idle thresh limit above.
......@@ -90,6 +99,9 @@ struct btrfs_workers {
/* lock for finding the next worker thread to queue on */
spinlock_t lock;
/* lock for the ordered lists */
spinlock_t order_lock;
/* extra name for this worker, used for current->name */
char *name;
};
......
......@@ -506,10 +506,10 @@ static noinline int add_ra_bio_pages(struct inode *inode,
*/
set_page_extent_mapped(page);
lock_extent(tree, last_offset, end, GFP_NOFS);
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, last_offset,
PAGE_CACHE_SIZE);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
if (!em || last_offset < em->start ||
(last_offset + PAGE_CACHE_SIZE > extent_map_end(em)) ||
......@@ -593,11 +593,11 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
em_tree = &BTRFS_I(inode)->extent_tree;
/* we need the actual starting offset of this extent in the file */
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree,
page_offset(bio->bi_io_vec->bv_page),
PAGE_CACHE_SIZE);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
compressed_len = em->block_len;
cb = kmalloc(compressed_bio_size(root, compressed_len), GFP_NOFS);
......
......@@ -2290,7 +2290,7 @@ extern struct file_operations btrfs_file_operations;
int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
u64 start, u64 end, u64 locked_end,
u64 inline_limit, u64 *hint_block);
u64 inline_limit, u64 *hint_block, int drop_cache);
int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode, u64 start, u64 end);
......
......@@ -123,15 +123,15 @@ static struct extent_map *btree_get_extent(struct inode *inode,
struct extent_map *em;
int ret;
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, start, len);
if (em) {
em->bdev =
BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
goto out;
}
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
em = alloc_extent_map(GFP_NOFS);
if (!em) {
......@@ -144,7 +144,7 @@ static struct extent_map *btree_get_extent(struct inode *inode,
em->block_start = 0;
em->bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
if (ret == -EEXIST) {
u64 failed_start = em->start;
......@@ -163,7 +163,7 @@ static struct extent_map *btree_get_extent(struct inode *inode,
free_extent_map(em);
em = NULL;
}
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
if (ret)
em = ERR_PTR(ret);
......@@ -1325,9 +1325,9 @@ static void btrfs_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
offset = page_offset(page);
em_tree = &BTRFS_I(inode)->extent_tree;
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
if (!em) {
__unplug_io_fn(bdi, page);
return;
......@@ -1698,7 +1698,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
err = -EINVAL;
goto fail_iput;
}
printk("thread pool is %d\n", fs_info->thread_pool_size);
/*
* we need to start all the end_io workers up front because the
* queue work function gets called at interrupt time, and so it
......@@ -1743,20 +1743,22 @@ struct btrfs_root *open_ctree(struct super_block *sb,
fs_info->endio_workers.idle_thresh = 4;
fs_info->endio_meta_workers.idle_thresh = 4;
fs_info->endio_write_workers.idle_thresh = 64;
fs_info->endio_meta_write_workers.idle_thresh = 64;
fs_info->endio_write_workers.idle_thresh = 2;
fs_info->endio_meta_write_workers.idle_thresh = 2;
fs_info->endio_workers.atomic_worker_start = 1;
fs_info->endio_meta_workers.atomic_worker_start = 1;
fs_info->endio_write_workers.atomic_worker_start = 1;
fs_info->endio_meta_write_workers.atomic_worker_start = 1;
btrfs_start_workers(&fs_info->workers, 1);
btrfs_start_workers(&fs_info->submit_workers, 1);
btrfs_start_workers(&fs_info->delalloc_workers, 1);
btrfs_start_workers(&fs_info->fixup_workers, 1);
btrfs_start_workers(&fs_info->endio_workers, fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->endio_meta_workers,
fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->endio_meta_write_workers,
fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->endio_write_workers,
fs_info->thread_pool_size);
btrfs_start_workers(&fs_info->endio_workers, 1);
btrfs_start_workers(&fs_info->endio_meta_workers, 1);
btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
btrfs_start_workers(&fs_info->endio_write_workers, 1);
fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
......
......@@ -5396,9 +5396,9 @@ static noinline int relocate_data_extent(struct inode *reloc_inode,
lock_extent(&BTRFS_I(reloc_inode)->io_tree, start, end, GFP_NOFS);
while (1) {
int ret;
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
if (ret != -EEXIST) {
free_extent_map(em);
break;
......
This diff is collapsed.
......@@ -13,10 +13,8 @@
#define EXTENT_DEFRAG (1 << 6)
#define EXTENT_DEFRAG_DONE (1 << 7)
#define EXTENT_BUFFER_FILLED (1 << 8)
#define EXTENT_ORDERED (1 << 9)
#define EXTENT_ORDERED_METADATA (1 << 10)
#define EXTENT_BOUNDARY (1 << 11)
#define EXTENT_NODATASUM (1 << 12)
#define EXTENT_BOUNDARY (1 << 9)
#define EXTENT_NODATASUM (1 << 10)
#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
/* flags for bio submission */
......@@ -142,6 +140,8 @@ int try_release_extent_state(struct extent_map_tree *map,
struct extent_io_tree *tree, struct page *page,
gfp_t mask);
int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, struct extent_state **cached, gfp_t mask);
int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
......@@ -155,11 +155,12 @@ u64 count_range_bits(struct extent_io_tree *tree,
u64 max_bytes, unsigned long bits);
int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
int bits, int filled);
int bits, int filled, struct extent_state *cached_state);
int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
int bits, int wake, int delete, gfp_t mask);
int bits, int wake, int delete, struct extent_state **cached,
gfp_t mask);
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
......@@ -282,5 +283,6 @@ int extent_clear_unlock_delalloc(struct inode *inode,
int clear_unlock,
int clear_delalloc, int clear_dirty,
int set_writeback,
int end_writeback);
int end_writeback,
int set_private2);
#endif
......@@ -36,7 +36,7 @@ void extent_map_exit(void)
void extent_map_tree_init(struct extent_map_tree *tree, gfp_t mask)
{
tree->map.rb_node = NULL;
spin_lock_init(&tree->lock);
rwlock_init(&tree->lock);
}
/**
......@@ -198,6 +198,56 @@ static int mergable_maps(struct extent_map *prev, struct extent_map *next)
return 0;
}
int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len)
{
int ret = 0;
struct extent_map *merge = NULL;
struct rb_node *rb;
struct extent_map *em;
write_lock(&tree->lock);
em = lookup_extent_mapping(tree, start, len);
WARN_ON(em->start != start || !em);
if (!em)
goto out;
clear_bit(EXTENT_FLAG_PINNED, &em->flags);
if (em->start != 0) {
rb = rb_prev(&em->rb_node);
if (rb)
merge = rb_entry(rb, struct extent_map, rb_node);
if (rb && mergable_maps(merge, em)) {
em->start = merge->start;
em->len += merge->len;
em->block_len += merge->block_len;
em->block_start = merge->block_start;
merge->in_tree = 0;
rb_erase(&merge->rb_node, &tree->map);
free_extent_map(merge);
}
}
rb = rb_next(&em->rb_node);
if (rb)
merge = rb_entry(rb, struct extent_map, rb_node);
if (rb && mergable_maps(em, merge)) {
em->len += merge->len;
em->block_len += merge->len;
rb_erase(&merge->rb_node, &tree->map);
merge->in_tree = 0;
free_extent_map(merge);
}
free_extent_map(em);
out:
write_unlock(&tree->lock);
return ret;
}
/**
* add_extent_mapping - add new extent map to the extent tree
* @tree: tree to insert new map in
......@@ -222,7 +272,6 @@ int add_extent_mapping(struct extent_map_tree *tree,
ret = -EEXIST;
goto out;
}
assert_spin_locked(&tree->lock);
rb = tree_insert(&tree->map, em->start, &em->rb_node);
if (rb) {
ret = -EEXIST;
......@@ -285,7 +334,6 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree,
struct rb_node *next = NULL;
u64 end = range_end(start, len);
assert_spin_locked(&tree->lock);
rb_node = __tree_search(&tree->map, start, &prev, &next);
if (!rb_node && prev) {
em = rb_entry(prev, struct extent_map, rb_node);
......@@ -331,7 +379,6 @@ int remove_extent_mapping(struct extent_map_tree *tree, struct extent_map *em)
int ret = 0;
WARN_ON(test_bit(EXTENT_FLAG_PINNED, &em->flags));
assert_spin_locked(&tree->lock);
rb_erase(&em->rb_node, &tree->map);
em->in_tree = 0;
return ret;
......
......@@ -31,7 +31,7 @@ struct extent_map {
struct extent_map_tree {
struct rb_root map;
spinlock_t lock;
rwlock_t lock;
};
static inline u64 extent_map_end(struct extent_map *em)
......@@ -59,4 +59,5 @@ struct extent_map *alloc_extent_map(gfp_t mask);
void free_extent_map(struct extent_map *em);
int __init extent_map_init(void);
void extent_map_exit(void);
int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len);
#endif
......@@ -112,8 +112,6 @@ static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
int err = 0;
int i;
struct inode *inode = fdentry(file)->d_inode;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
u64 hint_byte;
u64 num_bytes;
u64 start_pos;
u64 end_of_last_block;
......@@ -125,22 +123,6 @@ static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
root->sectorsize - 1) & ~((u64)root->sectorsize - 1);
end_of_last_block = start_pos + num_bytes - 1;
lock_extent(io_tree, start_pos, end_of_last_block, GFP_NOFS);
trans = btrfs_join_transaction(root, 1);
if (!trans) {
err = -ENOMEM;
goto out_unlock;
}
btrfs_set_trans_block_group(trans, inode);
hint_byte = 0;
set_extent_uptodate(io_tree, start_pos, end_of_last_block, GFP_NOFS);
/* check for reserved extents on each page, we don't want
* to reset the delalloc bit on things that already have
* extents reserved.
*/
btrfs_set_extent_delalloc(inode, start_pos, end_of_last_block);
for (i = 0; i < num_pages; i++) {
struct page *p = pages[i];
......@@ -155,9 +137,6 @@ static noinline int dirty_and_release_pages(struct btrfs_trans_handle *trans,
* at this time.
*/
}
err = btrfs_end_transaction(trans, root);
out_unlock:
unlock_extent(io_tree, start_pos, end_of_last_block, GFP_NOFS);
return err;
}
......@@ -189,18 +168,18 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
if (!split2)
split2 = alloc_extent_map(GFP_NOFS);
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, start, len);
if (!em) {
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
break;
}
flags = em->flags;
if (skip_pinned && test_bit(EXTENT_FLAG_PINNED, &em->flags)) {
spin_unlock(&em_tree->lock);
if (em->start <= start &&
(!testend || em->start + em->len >= start + len)) {
free_extent_map(em);
write_unlock(&em_tree->lock);
break;
}
if (start < em->start) {
......@@ -210,6 +189,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
start = em->start + em->len;
}
free_extent_map(em);
write_unlock(&em_tree->lock);
continue;
}
compressed = test_bit(EXTENT_FLAG_COMPRESSED, &em->flags);
......@@ -260,7 +240,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
free_extent_map(split);
split = NULL;
}
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
/* once for us */
free_extent_map(em);
......@@ -289,7 +269,7 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
noinline int btrfs_drop_extents(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode,
u64 start, u64 end, u64 locked_end,
u64 inline_limit, u64 *hint_byte)
u64 inline_limit, u64 *hint_byte, int drop_cache)
{
u64 extent_end = 0;
u64 search_start = start;
......@@ -314,6 +294,7 @@ noinline int btrfs_drop_extents(struct btrfs_trans_handle *trans,
int ret;
inline_limit = 0;
if (drop_cache)
btrfs_drop_extent_cache(inode, start, end - 1, 0);
path = btrfs_alloc_path();
......
This diff is collapsed.
......@@ -596,9 +596,8 @@ static int btrfs_defrag_file(struct file *file)
clear_page_dirty_for_io(page);
btrfs_set_extent_delalloc(inode, page_start, page_end);
unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
set_page_dirty(page);
unlock_extent(io_tree, page_start, page_end, GFP_NOFS);
unlock_page(page);
page_cache_release(page);
balance_dirty_pages_ratelimited_nr(inode->i_mapping, 1);
......@@ -976,7 +975,7 @@ static long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
/* punch hole in destination first */
btrfs_drop_extents(trans, root, inode, off, off + len,
off + len, 0, &hint_byte);
off + len, 0, &hint_byte, 1);
/* clone data */
key.objectid = src->i_ino;
......
......@@ -159,8 +159,6 @@ static inline struct rb_node *tree_search(struct btrfs_ordered_inode_tree *tree,
*
* len is the length of the extent
*
* This also sets the EXTENT_ORDERED bit on the range in the inode.
*
* The tree is given a single reference on the ordered extent that was
* inserted.
*/
......@@ -181,6 +179,7 @@ int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
entry->start = start;
entry->len = len;
entry->disk_len = disk_len;
entry->bytes_left = len;
entry->inode = inode;
if (type != BTRFS_ORDERED_IO_DONE && type != BTRFS_ORDERED_COMPLETE)
set_bit(type, &entry->flags);
......@@ -195,9 +194,6 @@ int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
&entry->rb_node);
BUG_ON(node);
set_extent_ordered(&BTRFS_I(inode)->io_tree, file_offset,
entry_end(entry) - 1, GFP_NOFS);
spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
list_add_tail(&entry->root_extent_list,
&BTRFS_I(inode)->root->fs_info->ordered_extents);
......@@ -241,13 +237,10 @@ int btrfs_dec_test_ordered_pending(struct inode *inode,
struct btrfs_ordered_inode_tree *tree;
struct rb_node *node;
struct btrfs_ordered_extent *entry;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
int ret;
tree = &BTRFS_I(inode)->ordered_tree;
mutex_lock(&tree->mutex);
clear_extent_ordered(io_tree, file_offset, file_offset + io_size - 1,
GFP_NOFS);
node = tree_search(tree, file_offset);
if (!node) {
ret = 1;
......@@ -260,11 +253,16 @@ int btrfs_dec_test_ordered_pending(struct inode *inode,
goto out;
}
ret = test_range_bit(io_tree, entry->file_offset,
entry->file_offset + entry->len - 1,
EXTENT_ORDERED, 0);
if (ret == 0)
if (io_size > entry->bytes_left) {
printk(KERN_CRIT "bad ordered accounting left %llu size %llu\n",
(unsigned long long)entry->bytes_left,
(unsigned long long)io_size);
}
entry->bytes_left -= io_size;
if (entry->bytes_left == 0)
ret = test_and_set_bit(BTRFS_ORDERED_IO_DONE, &entry->flags);
else
ret = 1;
out:
mutex_unlock(&tree->mutex);
return ret == 0;
......@@ -476,6 +474,7 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
u64 orig_end;
u64 wait_end;
struct btrfs_ordered_extent *ordered;
int found;
if (start + len < start) {
orig_end = INT_LIMIT(loff_t);
......@@ -502,6 +501,7 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
orig_end >> PAGE_CACHE_SHIFT);
end = orig_end;
found = 0;
while (1) {
ordered = btrfs_lookup_first_ordered_extent(inode, end);
if (!ordered)
......@@ -514,6 +514,7 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
btrfs_put_ordered_extent(ordered);
break;
}
found++;
btrfs_start_ordered_extent(inode, ordered, 1);
end = ordered->file_offset;
btrfs_put_ordered_extent(ordered);
......@@ -521,8 +522,8 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len)
break;
end--;
}
if (test_range_bit(&BTRFS_I(inode)->io_tree, start, orig_end,
EXTENT_ORDERED | EXTENT_DELALLOC, 0)) {
if (found || test_range_bit(&BTRFS_I(inode)->io_tree, start, orig_end,
EXTENT_DELALLOC, 0, NULL)) {
schedule_timeout(1);
goto again;
}
......@@ -613,7 +614,7 @@ int btrfs_ordered_update_i_size(struct inode *inode,
*/
if (test_range_bit(io_tree, disk_i_size,
ordered->file_offset + ordered->len - 1,
EXTENT_DELALLOC, 0)) {
EXTENT_DELALLOC, 0, NULL)) {
goto out;
}
/*
......@@ -664,7 +665,7 @@ int btrfs_ordered_update_i_size(struct inode *inode,
*/
if (i_size_test > entry_end(ordered) &&
!test_range_bit(io_tree, entry_end(ordered), i_size_test - 1,
EXTENT_DELALLOC, 0)) {
EXTENT_DELALLOC, 0, NULL)) {
new_i_size = min_t(u64, i_size_test, i_size_read(inode));
}
BTRFS_I(inode)->disk_i_size = new_i_size;
......
......@@ -85,6 +85,9 @@ struct btrfs_ordered_extent {
/* extent length on disk */
u64 disk_len;
/* number of bytes that still need writing */
u64 bytes_left;
/* flags (described above) */
unsigned long flags;
......
......@@ -2180,7 +2180,7 @@ static int tree_block_processed(u64 bytenr, u32 blocksize,
struct reloc_control *rc)
{
if (test_range_bit(&rc->processed_blocks, bytenr,
bytenr + blocksize - 1, EXTENT_DIRTY, 1))
bytenr + blocksize - 1, EXTENT_DIRTY, 1, NULL))
return 1;
return 0;
}
......@@ -2646,9 +2646,9 @@ int relocate_data_extent(struct inode *inode, struct btrfs_key *extent_key)
lock_extent(&BTRFS_I(inode)->io_tree, start, end, GFP_NOFS);
while (1) {
int ret;
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
if (ret != -EEXIST) {
free_extent_map(em);
break;
......
......@@ -534,7 +534,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans,
saved_nbytes = inode_get_bytes(inode);
/* drop any overlapping extents */
ret = btrfs_drop_extents(trans, root, inode,
start, extent_end, extent_end, start, &alloc_hint);
start, extent_end, extent_end, start, &alloc_hint, 1);
BUG_ON(ret);
if (found_type == BTRFS_FILE_EXTENT_REG ||
......
......@@ -276,7 +276,7 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
* is now congested. Back off and let other work structs
* run instead
*/
if (pending && bdi_write_congested(bdi) && batch_run > 32 &&
if (pending && bdi_write_congested(bdi) && batch_run > 8 &&
fs_info->fs_devices->open_devices > 1) {
struct io_context *ioc;
......@@ -1749,9 +1749,9 @@ static int btrfs_relocate_chunk(struct btrfs_root *root,
* step two, delete the device extents and the
* chunk tree entries
*/
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, chunk_offset, 1);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
BUG_ON(em->start > chunk_offset ||
em->start + em->len < chunk_offset);
......@@ -1780,9 +1780,9 @@ static int btrfs_relocate_chunk(struct btrfs_root *root,
ret = btrfs_remove_block_group(trans, extent_root, chunk_offset);
BUG_ON(ret);
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
remove_extent_mapping(em_tree, em);
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
kfree(map);
em->bdev = NULL;
......@@ -2294,9 +2294,9 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
em->block_len = em->len;
em_tree = &extent_root->fs_info->mapping_tree.map_tree;
spin_lock(&em_tree->lock);
write_lock(&em_tree->lock);
ret = add_extent_mapping(em_tree, em);
spin_unlock(&em_tree->lock);
write_unlock(&em_tree->lock);
BUG_ON(ret);
free_extent_map(em);
......@@ -2491,9 +2491,9 @@ int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
int readonly = 0;
int i;
spin_lock(&map_tree->map_tree.lock);
read_lock(&map_tree->map_tree.lock);
em = lookup_extent_mapping(&map_tree->map_tree, chunk_offset, 1);
spin_unlock(&map_tree->map_tree.lock);
read_unlock(&map_tree->map_tree.lock);
if (!em)
return 1;
......@@ -2518,11 +2518,11 @@ void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree)
struct extent_map *em;
while (1) {
spin_lock(&tree->map_tree.lock);
write_lock(&tree->map_tree.lock);
em = lookup_extent_mapping(&tree->map_tree, 0, (u64)-1);
if (em)
remove_extent_mapping(&tree->map_tree, em);
spin_unlock(&tree->map_tree.lock);
write_unlock(&tree->map_tree.lock);
if (!em)
break;
kfree(em->bdev);
......@@ -2540,9 +2540,9 @@ int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len)
struct extent_map_tree *em_tree = &map_tree->map_tree;
int ret;
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, logical, len);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
BUG_ON(!em);
BUG_ON(em->start > logical || em->start + em->len < logical);
......@@ -2604,9 +2604,9 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
atomic_set(&multi->error, 0);
}
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, logical, *length);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
if (!em && unplug_page)
return 0;
......@@ -2763,9 +2763,9 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
u64 stripe_nr;
int i, j, nr = 0;
spin_lock(&em_tree->lock);
read_lock(&em_tree->lock);
em = lookup_extent_mapping(em_tree, chunk_start, 1);
spin_unlock(&em_tree->lock);
read_unlock(&em_tree->lock);
BUG_ON(!em || em->start != chunk_start);
map = (struct map_lookup *)em->bdev;
......@@ -3053,9 +3053,9 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
logical = key->offset;
length = btrfs_chunk_length(leaf, chunk);
spin_lock(&map_tree->map_tree.lock);
read_lock(&map_tree->map_tree.lock);
em = lookup_extent_mapping(&map_tree->map_tree, logical, 1);
spin_unlock(&map_tree->map_tree.lock);
read_unlock(&map_tree->map_tree.lock);
/* already mapped? */
if (em && em->start <= logical && em->start + em->len > logical) {
......@@ -3114,9 +3114,9 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
map->stripes[i].dev->in_fs_metadata = 1;
}
spin_lock(&map_tree->map_tree.lock);
write_lock(&map_tree->map_tree.lock);
ret = add_extent_mapping(&map_tree->map_tree, em);
spin_unlock(&map_tree->map_tree.lock);
write_unlock(&map_tree->map_tree.lock);
BUG_ON(ret);
free_extent_map(em);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment