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    Subject[PATCH v2 3/4] fs: convert sync_file_range to use errseq_t based error-tracking
    Date
    From: Jeff Layton <jlayton@redhat.com>

    sync_file_range doesn't call down into the filesystem directly at all.
    It only kicks off writeback of pagecache pages and optionally waits
    on the result.

    Convert sync_file_range to use errseq_t based error tracking, under the
    assumption that most users will prefer this behavior when errors occur.

    Reviewed-by: Jan Kara <jack@suse.cz>
    Signed-off-by: Jeff Layton <jlayton@redhat.com>
    ---
    fs/sync.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/fs/sync.c b/fs/sync.c
    index 2a54c1f22035..27d6b8bbcb6a 100644
    --- a/fs/sync.c
    +++ b/fs/sync.c
    @@ -342,7 +342,7 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,

    ret = 0;
    if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
    - ret = filemap_fdatawait_range(mapping, offset, endbyte);
    + ret = file_fdatawait_range(f.file, offset, endbyte);
    if (ret < 0)
    goto out_put;
    }
    @@ -355,7 +355,7 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
    }

    if (flags & SYNC_FILE_RANGE_WAIT_AFTER)
    - ret = filemap_fdatawait_range(mapping, offset, endbyte);
    + ret = file_fdatawait_range(f.file, offset, endbyte);

    out_put:
    fdput(f);
    --
    2.13.3
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