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| author |   Dave Chinner <dchinner@redhat.com> | 2018-11-19 13:31:12 -0800 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2018-11-21 10:10:54 -0800 |
| commit | 494633fac7896afc2bce6f83fe7319946270540b (patch) | |
| tree | 86c87a32c846defd14da23cface9d4f6a8ee677e | |
| parent | iomap: dio data corruption and spurious errors when pipes fill (diff) | |
| download | linux-dev-494633fac7896afc2bce6f83fe7319946270540b.tar.xz linux-dev-494633fac7896afc2bce6f83fe7319946270540b.zip | |
vfs: vfs_dedupe_file_range() doesn't return EOPNOTSUPP
It returns EINVAL when the operation is not supported by the
filesystem. Fix it to return EOPNOTSUPP to be consistent with
the man page and clone_file_range().
Clean up the inconsistent error return handling while I'm there.
(I know, lipstick on a pig, but every little bit helps...)
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
| -rw-r--r-- | fs/read_write.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index bfcb4ced5664..4dae0399c75a 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -2094,17 +2094,18 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same) off = same->src_offset; len = same->src_length; - ret = -EISDIR; if (S_ISDIR(src->i_mode)) - goto out; + return -EISDIR; - ret = -EINVAL; if (!S_ISREG(src->i_mode)) - goto out; + return -EINVAL; + + if (!file->f_op->remap_file_range) + return -EOPNOTSUPP; ret = remap_verify_area(file, off, len, false); if (ret < 0) - goto out; + return ret; ret = 0; if (off + len > i_size_read(src)) @@ -2147,10 +2148,8 @@ next_fdput: fdput(dst_fd); next_loop: if (fatal_signal_pending(current)) - goto out; + break; } - -out: return ret; } EXPORT_SYMBOL(vfs_dedupe_file_range); |