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Btrfs: remove redundant check for swapfiles when reflinking 

Checking if either of the inodes corresponds to a swapfile is already
performed by generic_remap_file_range_prep(), so we do not need to do
it in the btrfs clone and deduplication functions.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
hifive-unleashed-5.1
Filipe Manana 2019-01-08 11:43:18 +00:00 committed by David Sterba
parent 420829d8ea
commit 0f39b60563
1 changed files with 0 additions and 6 deletions
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6
fs/btrfs/ioctl.c
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@ -3285,9 +3285,6 @@ static int btrfs_extent_same(struct inode *src, u64 loff, u64 olen,
(BTRFS_I(dst)->flags & BTRFS_INODE_NODATASUM))
return -EINVAL;
if (IS_SWAPFILE(src) || IS_SWAPFILE(dst))
return -ETXTBSY;
tail_len = olen % BTRFS_MAX_DEDUPE_LEN;
chunk_count = div_u64(olen, BTRFS_MAX_DEDUPE_LEN);
@ -3910,9 +3907,6 @@ static noinline int btrfs_clone_files(struct file *file, struct file *file_src,
(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM))
return -EINVAL;
if (IS_SWAPFILE(src) || IS_SWAPFILE(inode))
return -ETXTBSY;
/*
* VFS's generic_remap_file_range_prep() protects us from cloning the
* eof block into the middle of a file, which would result in corruption