summaryrefslogtreecommitdiff
path: root/fs/btrfs/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/btrfs/super.c')
-rw-r--r--fs/btrfs/super.c56
1 files changed, 34 insertions, 22 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a29a781b..130a1d3 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -18,14 +18,14 @@
#include "btrfs_inode.h"
#include "ioctl.h"
-void btrfs_fsinfo_release(struct kobject *obj)
+static void btrfs_fsinfo_release(struct kobject *obj)
{
struct btrfs_fs_info *fsinfo = container_of(obj,
struct btrfs_fs_info, kobj);
kfree(fsinfo);
}
-struct kobj_type btrfs_fsinfo_ktype = {
+static struct kobj_type btrfs_fsinfo_ktype = {
.release = btrfs_fsinfo_release,
};
@@ -148,7 +148,6 @@ static void fill_inode_item(struct btrfs_inode_item *item,
BTRFS_I(inode)->block_group->key.objectid);
}
-
static int btrfs_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct inode *inode)
@@ -251,6 +250,7 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
ret = btrfs_unlink_trans(trans, root, dir, dentry);
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
+ btrfs_btree_balance_dirty(root);
return ret;
}
@@ -324,6 +324,7 @@ out:
btrfs_free_path(path);
mutex_unlock(&root->fs_info->fs_mutex);
ret = btrfs_end_transaction(trans, root);
+ btrfs_btree_balance_dirty(root);
if (ret && !err)
err = ret;
return err;
@@ -449,6 +450,7 @@ static void btrfs_delete_inode(struct inode *inode)
btrfs_free_inode(trans, root, inode);
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
+ btrfs_btree_balance_dirty(root);
return;
no_delete:
clear_inode(inode);
@@ -481,7 +483,7 @@ out:
return ret;
}
-int fixup_tree_root_location(struct btrfs_root *root,
+static int fixup_tree_root_location(struct btrfs_root *root,
struct btrfs_key *location,
struct btrfs_root **sub_root)
{
@@ -512,7 +514,7 @@ int fixup_tree_root_location(struct btrfs_root *root,
return 0;
}
-int btrfs_init_locked_inode(struct inode *inode, void *p)
+static int btrfs_init_locked_inode(struct inode *inode, void *p)
{
struct btrfs_iget_args *args = p;
inode->i_ino = args->ino;
@@ -520,15 +522,15 @@ int btrfs_init_locked_inode(struct inode *inode, void *p)
return 0;
}
-int btrfs_find_actor(struct inode *inode, void *opaque)
+static int btrfs_find_actor(struct inode *inode, void *opaque)
{
struct btrfs_iget_args *args = opaque;
return (args->ino == inode->i_ino &&
args->root == BTRFS_I(inode)->root);
}
-struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
- struct btrfs_root *root)
+static struct inode *btrfs_iget_locked(struct super_block *s, u64 objectid,
+ struct btrfs_root *root)
{
struct inode *inode;
struct btrfs_iget_args args;
@@ -790,6 +792,7 @@ static void btrfs_dirty_inode(struct inode *inode)
btrfs_update_inode(trans, root, inode);
btrfs_end_transaction(trans, root);
mutex_unlock(&root->fs_info->fs_mutex);
+ btrfs_btree_balance_dirty(root);
}
static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
@@ -913,6 +916,7 @@ out_unlock:
inode_dec_link_count(inode);
iput(inode);
}
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -1002,6 +1006,7 @@ out_unlock:
mutex_unlock(&root->fs_info->fs_mutex);
if (drop_on_err)
iput(inode);
+ btrfs_btree_balance_dirty(root);
return err;
}
@@ -1099,7 +1104,6 @@ static int btrfs_get_block_lock(struct inode *inode, sector_t iblock,
found_type != BTRFS_EXTENT_DATA_KEY) {
extent_end = 0;
extent_start = 0;
- btrfs_release_path(root, path);
goto out;
}
found_type = btrfs_file_extent_type(item);
@@ -1135,7 +1139,6 @@ static int btrfs_get_block_lock(struct inode *inode, sector_t iblock,
btrfs_map_bh_to_logical(root, result, 0);
}
out:
- btrfs_release_path(root, path);
btrfs_free_path(path);
return err;
}
@@ -1231,13 +1234,13 @@ static int __btrfs_write_full_page(struct inode *inode, struct page *page,
} else if (!buffer_mapped(bh) && buffer_dirty(bh)) {
WARN_ON(bh->b_size != blocksize);
err = btrfs_get_block(inode, block, bh, 0);
- if (err)
+ if (err) {
+printk("writepage going to recovery err %d\n", err);
goto recover;
+ }
if (buffer_new(bh)) {
/* blockdev mappings never come here */
clear_buffer_new(bh);
- unmap_underlying_metadata(bh->b_bdev,
- bh->b_blocknr);
}
}
bh = bh->b_this_page;
@@ -1303,11 +1306,6 @@ done:
if (uptodate)
SetPageUptodate(page);
end_page_writeback(page);
- /*
- * The page and buffer_heads can be released at any time from
- * here on.
- */
- wbc->pages_skipped++; /* We didn't write this page */
}
return err;
@@ -1409,10 +1407,11 @@ static void btrfs_truncate(struct inode *inode)
btrfs_set_trans_block_group(trans, inode);
ret = btrfs_truncate_in_trans(trans, root, inode);
BUG_ON(ret);
+ btrfs_update_inode(trans, root, inode);
ret = btrfs_end_transaction(trans, root);
BUG_ON(ret);
mutex_unlock(&root->fs_info->fs_mutex);
- mark_inode_dirty(inode);
+ btrfs_btree_balance_dirty(root);
}
/*
@@ -1777,10 +1776,15 @@ static int prepare_pages(struct btrfs_root *root,
err = -ENOMEM;
goto failed_release;
}
+ cancel_dirty_page(pages[i], PAGE_CACHE_SIZE);
+ wait_on_page_writeback(pages[i]);
offset = pos & (PAGE_CACHE_SIZE -1);
this_write = min(PAGE_CACHE_SIZE - offset, write_bytes);
- create_empty_buffers(pages[i], root->fs_info->sb->s_blocksize,
- (1 << BH_Uptodate));
+ if (!page_has_buffers(pages[i])) {
+ create_empty_buffers(pages[i],
+ root->fs_info->sb->s_blocksize,
+ (1 << BH_Uptodate));
+ }
head = page_buffers(pages[i]);
bh = head;
do {
@@ -1820,7 +1824,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
struct inode *inode = file->f_path.dentry->d_inode;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct page *pages[8];
- struct page *pinned[2] = { NULL, NULL };
+ struct page *pinned[2];
unsigned long first_index;
unsigned long last_index;
u64 start_pos;
@@ -1829,6 +1833,8 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
struct btrfs_trans_handle *trans;
struct btrfs_key ins;
+ pinned[0] = NULL;
+ pinned[1] = NULL;
if (file->f_flags & O_DIRECT)
return -EINVAL;
pos = *ppos;
@@ -1858,6 +1864,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
if (!PageUptodate(pinned[0])) {
ret = mpage_readpage(pinned[0], btrfs_get_block);
BUG_ON(ret);
+ wait_on_page_locked(pinned[0]);
} else {
unlock_page(pinned[0]);
}
@@ -1869,6 +1876,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
if (!PageUptodate(pinned[1])) {
ret = mpage_readpage(pinned[1], btrfs_get_block);
BUG_ON(ret);
+ wait_on_page_locked(pinned[1]);
} else {
unlock_page(pinned[1]);
}
@@ -1940,6 +1948,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
num_written += write_bytes;
balance_dirty_pages_ratelimited(inode->i_mapping);
+ btrfs_btree_balance_dirty(root);
cond_resched();
}
out_unlock:
@@ -2165,6 +2174,7 @@ static int create_subvol(struct btrfs_root *root, char *name, int namelen)
iput(inode);
mutex_unlock(&root->fs_info->fs_mutex);
+ btrfs_btree_balance_dirty(root);
return 0;
}
@@ -2220,6 +2230,7 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen)
ret = btrfs_commit_transaction(trans, root);
BUG_ON(ret);
mutex_unlock(&root->fs_info->fs_mutex);
+ btrfs_btree_balance_dirty(root);
return 0;
}
@@ -2295,6 +2306,7 @@ out:
mutex_unlock(&root->fs_info->fs_mutex);
out_nolock:
btrfs_free_path(path);
+ btrfs_btree_balance_dirty(root);
return ret;
}
generated by cgit v0.10.2 at 2024-11-07 01:32:32 (GMT)