diff options
Diffstat (limited to 'fs/btrfs/reflink.c')
| -rw-r--r-- | fs/btrfs/reflink.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c index 998e3f180d90..c39f8b3a5a4a 100644 --- a/fs/btrfs/reflink.c +++ b/fs/btrfs/reflink.c @@ -614,14 +614,23 @@ static void btrfs_double_extent_unlock(struct inode *inode1, u64 loff1, static void btrfs_double_extent_lock(struct inode *inode1, u64 loff1, struct inode *inode2, u64 loff2, u64 len) { + u64 range1_end = loff1 + len - 1; + u64 range2_end = loff2 + len - 1; + if (inode1 < inode2) { swap(inode1, inode2); swap(loff1, loff2); + swap(range1_end, range2_end); } else if (inode1 == inode2 && loff2 < loff1) { swap(loff1, loff2); + swap(range1_end, range2_end); } - lock_extent(&BTRFS_I(inode1)->io_tree, loff1, loff1 + len - 1); - lock_extent(&BTRFS_I(inode2)->io_tree, loff2, loff2 + len - 1); + + lock_extent(&BTRFS_I(inode1)->io_tree, loff1, range1_end); + lock_extent(&BTRFS_I(inode2)->io_tree, loff2, range2_end); + + btrfs_assert_inode_range_clean(BTRFS_I(inode1), loff1, range1_end); + btrfs_assert_inode_range_clean(BTRFS_I(inode2), loff2, range2_end); } static void btrfs_double_mmap_lock(struct inode *inode1, struct inode *inode2) @@ -771,7 +780,6 @@ static int btrfs_remap_file_range_prep(struct file *file_in, loff_t pos_in, struct inode *inode_in = file_inode(file_in); struct inode *inode_out = file_inode(file_out); u64 bs = BTRFS_I(inode_out)->root->fs_info->sb->s_blocksize; - bool same_inode = inode_out == inode_in; u64 wb_len; int ret; @@ -810,15 +818,6 @@ static int btrfs_remap_file_range_prep(struct file *file_in, loff_t pos_in, wb_len = ALIGN(*len, bs); /* - * Since we don't lock ranges, wait for ongoing lockless dio writes (as - * any in progress could create its ordered extents after we wait for - * existing ordered extents below). - */ - inode_dio_wait(inode_in); - if (!same_inode) - inode_dio_wait(inode_out); - - /* * Workaround to make sure NOCOW buffered write reach disk as NOCOW. * * Btrfs' back references do not have a block level granularity, they |