btrfs: Use newly introduced btrfs_lock_and_flush_ordered_range

There several functions which open code
btrfs_lock_and_flush_ordered_range, just replace them with a call to the
function. No functional changes.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index dd3f659..9591ecf 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3204,21 +3204,10 @@ static inline void contiguous_readpages(struct extent_io_tree *tree,
                                             unsigned long *bio_flags,
                                             u64 *prev_em_start)
 {
-       struct inode *inode;
-       struct btrfs_ordered_extent *ordered;
+       struct btrfs_inode *inode = BTRFS_I(pages[0]->mapping->host);
        int index;
 
-       inode = pages[0]->mapping->host;
-       while (1) {
-               lock_extent(tree, start, end);
-               ordered = btrfs_lookup_ordered_range(BTRFS_I(inode), start,
-                                                    end - start + 1);
-               if (!ordered)
-                       break;
-               unlock_extent(tree, start, end);
-               btrfs_start_ordered_extent(inode, ordered, 1);
-               btrfs_put_ordered_extent(ordered);
-       }
+       btrfs_lock_and_flush_ordered_range(tree, inode, start, end, NULL);
 
        for (index = 0; index < nr_pages; index++) {
                __do_readpage(tree, pages[index], btrfs_get_extent, em_cached,
@@ -3234,22 +3223,12 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                                   unsigned long *bio_flags,
                                   unsigned int read_flags)
 {
-       struct inode *inode = page->mapping->host;
-       struct btrfs_ordered_extent *ordered;
+       struct btrfs_inode *inode = BTRFS_I(page->mapping->host);
        u64 start = page_offset(page);
        u64 end = start + PAGE_SIZE - 1;
        int ret;
 
-       while (1) {
-               lock_extent(tree, start, end);
-               ordered = btrfs_lookup_ordered_range(BTRFS_I(inode), start,
-                                               PAGE_SIZE);
-               if (!ordered)
-                       break;
-               unlock_extent(tree, start, end);
-               btrfs_start_ordered_extent(inode, ordered, 1);
-               btrfs_put_ordered_extent(ordered);
-       }
+       btrfs_lock_and_flush_ordered_range(tree, inode, start, end, NULL);
 
        ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
                            bio_flags, read_flags, NULL);

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 89f5be2..007652f 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1550,7 +1550,6 @@ static noinline int check_can_nocow(struct btrfs_inode *inode, loff_t pos,
 {
        struct btrfs_fs_info *fs_info = inode->root->fs_info;
        struct btrfs_root *root = inode->root;
-       struct btrfs_ordered_extent *ordered;
        u64 lockstart, lockend;
        u64 num_bytes;
        int ret;
@@ -1563,17 +1562,8 @@ static noinline int check_can_nocow(struct btrfs_inode *inode, loff_t pos,
        lockend = round_up(pos + *write_bytes,
                           fs_info->sectorsize) - 1;
 
-       while (1) {
-               lock_extent(&inode->io_tree, lockstart, lockend);
-               ordered = btrfs_lookup_ordered_range(inode, lockstart,
-                                                    lockend - lockstart + 1);
-               if (!ordered) {
-                       break;
-               }
-               unlock_extent(&inode->io_tree, lockstart, lockend);
-               btrfs_start_ordered_extent(&inode->vfs_inode, ordered, 1);
-               btrfs_put_ordered_extent(ordered);
-       }
+       btrfs_lock_and_flush_ordered_range(&inode->io_tree, inode, lockstart,
+                                          lockend, NULL);
 
        num_bytes = lockend - lockstart + 1;
        ret = can_nocow_extent(&inode->vfs_inode, lockstart, &num_bytes,

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d324e2a..9137baf 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -5004,21 +5004,8 @@ int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
        if (size <= hole_start)
                return 0;
 
-       while (1) {
-               struct btrfs_ordered_extent *ordered;
-
-               lock_extent_bits(io_tree, hole_start, block_end - 1,
-                                &cached_state);
-               ordered = btrfs_lookup_ordered_range(BTRFS_I(inode), hole_start,
-                                                    block_end - hole_start);
-               if (!ordered)
-                       break;
-               unlock_extent_cached(io_tree, hole_start, block_end - 1,
-                                    &cached_state);
-               btrfs_start_ordered_extent(inode, ordered, 1);
-               btrfs_put_ordered_extent(ordered);
-       }
-
+       btrfs_lock_and_flush_ordered_range(io_tree, BTRFS_I(inode), hole_start,
+                                          block_end - 1, &cached_state);
        cur_offset = hole_start;
        while (1) {
                em = btrfs_get_extent(BTRFS_I(inode), NULL, 0, cur_offset,