• Josef Bacik's avatar
    fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers · 02c24a82
    Josef Bacik authored
    Btrfs needs to be able to control how filemap_write_and_wait_range() is called
    in fsync to make it less of a painful operation, so push down taking i_mutex and
    the calling of filemap_write_and_wait() down into the ->fsync() handlers.  Some
    file systems can drop taking the i_mutex altogether it seems, like ext3 and
    ocfs2.  For correctness sake I just pushed everything down in all cases to make
    sure that we keep the current behavior the same for everybody, and then each
    individual fs maintainer can make up their mind about what to do from there.
    Acked-by: default avatarJan Kara <jack@suse.cz>
    Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
file.c 6.7 KB